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Rohde & Schwarz CTS50 Operating Manual

Digital radio tester for gsm (gsm 900) - pcn (gsm 1800 / dcs 1800) - pcs (gsm 1900 / dcs 1900) - mobiles

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Operating Manual

Digital Radio Tester

for

GSM (GSM 900) -

PCN (GSM 1800 / DCS 1800) -

PCS (GSM 1900 / DCS 1900) -

Mobiles

R&S

R&S

1094.0006.50

1094.0006.55

Printed in Germany

1094.3405.12-11-



CTS50



CTS55

Test and Measurement

Division

1

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Page 1 Test and Measurement Division Operating Manual Digital Radio Tester GSM (GSM 900) - PCN (GSM 1800 / DCS 1800) - PCS (GSM 1900 / DCS 1900) - Mobiles  CTS50 R&S  CTS55 R&S 1094.0006.50 1094.0006.55 Printed in Germany 1094.3405.12-11-...
Page 2 Dear Customer, R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG. Trade names are trademarks of the owners. 1094.3405.12-11-...
Page 3 Note Digital Radio Tester CTS50 basic model, options CTS-K9, CTS-K18 and CTS-K19 enable its use with operating modes GSM, PCN and PCS, respectively. 1094.3392.12-01-...
Page 5: Table Of Contents
CTS55 Contents Contents Data Sheet 1 Introduction ..........................1.1 1.1 Application for the Autotest.....................1.1 1.1.1 Overview ........................1.1 1.1.2 Test Functions in the Autotest ..................1.1 1.2 Quicktest............................1.2 1.3 Application for the Manual Test ....................1.2 1.4 Application for the Module Test (Option CTS-B7)..............1.2 1.5 Remote Control (Option CTS-K6)....................1.2 2 Preparation for Use ........................2.1...
Page 6 Contents CTS55 4 Autotest Sequence in Detail ....................4.1 4.1 General............................4.1 4.2 1st Step - Start...........................4.3 4.3 2nd Step - Location Update .....................4.6 4.4 3rd Step - Call to MS.........................4.7 4.5 4th Step - Echo Test .........................4.7 4.6 5th Step - MS Release ......................4.7 4.7 6th Step - Call From MS ......................4.8 4.8 7th Step - MS Average Power ....................4.9 4.9 8th Step - Sensitivity (RxLev and RxQual) ................4.11...
Page 7 CTS55 Contents 6.5 GPRS/BLER Measurements....................6.15 6.5.1 GPRS Attach........................6.15 6.5.2 GPRS Block Error Rate ....................6.16 6.5.3 GPRS Detach.......................6.16 7 Module Test ..........................7.1 7.1 Overview ............................7.1 7.2 Menu hierarchy .........................7.2 7.3 Starting Module Test ........................7.3 7.4 Burst Analysis ...........................7.4 7.4.1 Configuration........................7.4 7.4.2 Running the Burst Analysis measurement..............7.5 7.4.3 The Measurement Results.....................7.6...
Page 8 Contents CTS55 9 Detailed Description of the Menus ..................9.1 9.1 Menu Structure Overview ......................9.1 9.2 Menu Structure Graph......................9.2 9.3 Some Basic Elements of the Man Machine Interface............9.3 9.3.1 Multi Field Editing......................9.3 9.3.2 Single Field Editing ......................9.4 9.3.3 Single Field Editing with Direct Saving................9.4 9.4 Home Menu ..........................9.5 9.5 Auto Test Menus ........................9.6 9.5.1...
Page 9 CTS55 Contents 9.8 Measurement Configuration Menus ..................9.27 9.8.1 Config Power Ramp.....................9.27 9.8.2 Config Phase/Freq Menu .....................9.28 9.8.3 Config BER Menu ......................9.29 9.8.4 Config BER Sensitivity ....................9.30 9.9 General Configuration Menus ....................9.31 9.9.1 Config - Select......................9.31 9.9.2 Config BS Signal ......................9.32 9.9.3 Config Channels......................9.33 9.9.4...
Page 10 Contents CTS55 11 Remote Control .........................11.1 11.1 Introduction ..........................11.1 11.2 Brief Instructions ........................11.1 11.3 Switchover to Remote Control ....................11.2 11.4 Device Messages (Commands and Device Responses).............11.2 11.5 Structure and Syntax of the Device Messages ..............11.3 11.5.1 SCPI Introduction ......................11.3 11.5.2 Structure of a Command....................11.3 11.5.3 Structure of a Command Line ..................11.5 11.5.4 Responses to Queries ....................11.7 11.5.5 Parameters ........................11.8...
Page 11 CTS55 Contents 12 Software Options ........................12.1 12.1 Overview ..........................12.1 12.2 Menu hierarchy ........................12.1 12.3 Setting the Serial Number......................12.2 12.4 Setting the Code Number to enable an option ..............12.3 13 Performance Test (with Service Software) ..............13.1 13.1 Starting the Program ......................13.1 13.2 Operating the Program......................13.1 13.3 Tests To Be Performed ......................13.2 13.4 Remote Control of Performance Test Program ..............13.3...
Page 13 Before putting the product into operation for the first time, make sure to read the following S a f e t y I n s t r u c t i o n s Rohde & Schwarz makes every effort to keep the safety standard of its products up to date and to offer its customers the highest possible degree of safety.
Page 14 Safety Instructions Observing the safety instructions will help prevent personal injury or damage of any kind caused by dangerous situations. Therefore, carefully read through and adhere to the following safety instructions before putting the product into operation. It is also absolutely essential to observe the additional safety instructions on personal safety that appear in other parts of the documentation.
Page 15 Safety Instructions 4. If products/components are mechanically 10. Intentionally breaking the protective earth and/or thermically processed in a manner connection either in the feed line or in the that goes beyond their intended use, product itself is not permitted. Doing so can hazardous substances (heavy-metal dust result in the danger of an electric shock such as lead, beryllium, nickel) may be...
Page 16 Safety Instructions 19. If a product is to be permanently installed, matching Rohde & Schwarz type (see the connection between the PE terminal on spare parts list). Batteries and storage site and the product's PE conductor must batteries are hazardous waste. Dispose of be made first before any other connection them only in specially marked containers.
Page 17 Por favor lea imprescindiblemente antes de la primera puesta en funcionamiento las siguientes informaciones de seguridad Informaciones de seguridad Es el principio de Rohde & Schwarz de tener a sus productos siempre al día con los estandards de seguridad y de ofrecer a sus clientes el máximo grado de seguridad. Nuestros productos y todos los equipos adicionales son siempre fabricados y examinados según las normas de seguridad vigentes.
Page 18 Informaciones de seguridad Tener en cuenta las informaciones de seguridad sirve para tratar de evitar daños y peligros de toda clase. Es necesario de que se lean las siguientes informaciones de seguridad concienzudamente y se tengan en cuenta debidamente antes de la puesta en funcionamiento del producto. También deberán ser tenidas en cuenta las informaciones para la protección de personas que encontrarán en otro capítulo de esta documentación y que también son obligatorias de seguir.
Page 19 Informaciones de seguridad seguridad (control a primera vista, control de peligro a causa de la radiación conductor protector, medición de resistencia electromagnética. El empresario está de aislamiento, medición de medición de la comprometido a valorar y señalar areas de corriente conductora, control trabajo en las que se corra un riesgo de...
Page 20 Informaciones de seguridad 12. No utilice nunca el producto si está dañado el 20. En caso de que los productos que son cable eléctrico. Asegure a través de las instalados fijamente en un lugar sean sin medidas de protección y de instalación protector implementado, autointerruptor o adecuadas de que el cable de eléctrico no similares objetos de protección, deberá...
Page 21 Informaciones de seguridad 27. Baterías y acumuladores no deben de ser 31. Las asas instaladas en los productos sirven expuestos a temperaturas altas o al fuego. solamente de ayuda para el manejo que Guardar baterías y acumuladores fuera del solamente está previsto para personas. Por alcance de los niños.
Page 23 Certificate No.: 98069 This is to certify that: Equipment type Order No. Designation CTS50 1094.0006.50 Digital Radio Tester complies with the provisions of the Directive of the Council of the European Union on the approximation of the laws of the Member States...
Page 25 EC Certificate of Conformity Certificate No.: 960210 This is to certify that: Equipment type Order No. Designation CTS55 1094.0006.55 Digital Radio Tester CTS-B1 1079.0809.02 OCXO Reference Oscillator CTS-B7 1079.2101.02 Module Test and Output complies with the provisions of the Directive of the Council of the European Union on the approximation of the laws of the Member States - relating to electrical equipment for use within defined voltage limits (73/23/EEC revised by 93/68/EEC)
Page 27 Supplement to Data Sheet CTS (PD757.2509.22) Specifications supplement: AM modulated signal at RF OUT2 GSM connector (only with CTS-K7) Level range (depending on modulation depth) GSM900 band ..........-20 to -30 dBm GSM1800/1900 band ........-23 to -33 dBm Modulation depth at -23 dBm / -26 dBm ........0 to 90 % AM...
Page 29 Problems with GSM? If you would like to enhance your knowledge about GSM and DCS1800, then there is no better way than at a ROHDE & SCHWARZ seminar. The program of seminars published every six months include the following topics dealt with at the Munich training center: •...
Page 31: Introduction
CTS55 Introduction Introduction The tester CTS is a value-for-money instrument for automatic and fast function tests, as well as detailed service testing on digital mobiles. Two automatic and fast function tests are implemented in CTS, one being called Quicktest, the other being called Autotest. The detailed service test is called the Manual Test of the CTS.
Page 32: Quicktest
Introduction CTS55 Quicktest Quicktest and Autotest share the same application range. However, there is a difference as regards the exhaustiveness of the test. While exhaustive tests are carried out in Autotest on one, two or three channels Quicktest consists of a fixed sequence comprising: •...
Page 33: Preparation For Use
CTS55 Putting into Operation Preparation for Use When unpacking the instrument, don't forget the items and accessories which are included. When transporting the instrument in future it is strongly recommended that the protective caps included in the shipping box for protection of the front and rear panel are used. This serves to prevent damage to the protruding items on the front and rear panels.
Page 34: Explanation Of Front And Rear View
Putting into Operation CTS55 Explanation of Front and Rear View This page shows the front and rear view of the instrument, with short explanations on the controls and connectors. TFT Display DIGITAL RADIO TESTER CTS 55 1094.0006.55 Softkeys for menu control RF OUT 2 GSM High level output Hardkey to...
Page 35 CTS55 Putting into Operation Instrument with wide-range voltage input Service connector Fan of power supply unit (controlled) (e. g. for ext. monitor) MONITOR Power switch on/off 100 ... 240 V / 160 VA 50 ... 60 Hz (uncontrolled) RF OUT2 (Option CTS-B7) KEYBOARD RS 232 Keyboard connector...
Page 36: Commissioning
Putting into Operation CTS55 Commissioning 2.2.1 Setting up the Instrument For bench measurements, it is recommended that the fold out feet at the bottom of the instrument are used as this improves the viewing angle of the screen. For convenient operation of the instrument note the following: •...
Page 37: Ensuring Electromagnetic Compliance (Emc)
CTS55 Putting into Operation 2.2.3 Ensuring Electromagnetic Compliance (EMC) In order to avoid electromagnetic interference, the instrument may only be operated with all covers in place as they form part of the shielding for the instrument. Only appropriate shielded signal and control cables (e.g.
Page 38: Connecting An External Keyboard
Putting into Operation CTS55 2.2.7 Connecting an External Keyboard The equipment can also be operated with an external keyboard which is to be connected to the rear- panel PS-2 connector KEYBOARD. • Function keys F1 to F6 are assigned to the 6 softkeys next to the display. F1 corresponds to the uppermost softkey.
Page 39: Getting Started With Autotest
CTS55 Getting Started With Autotest Getting Started With Autotest Overview In Autotest mode the CTS for digital mobiles is easy and convenient to operate thanks to its clear-cut menu structure. If this is your first encounter with CTS in Autotest mode, this chapter will give you a quick survey of tests performed on mobile stations.
Page 40 Getting Started With Autotest CTS55 When a two band autotest sequence is performed, two further autotest steps may be attempted. These two steps are determined by examining the Dual Band capability of the instrument. If the instrument is configured for Dual Band handover, then the following two steps apply. The „Handover To“...
Page 41 CTS55 Getting Started With Autotest 1094.0006.55...
Page 42: Test Of Mobile
Getting Started With Autotest CTS55 Test of Mobile DIGITAL RADIO TESTER CTS 55 1094.0006.55 Step 1 Connect the N socket RF IN/OUT of CTS with antenna connector of RF OUT 2 GSM mobile. MENU UP D EF G H I RF IN / OUT GSM Make sure that the mobile is ÜV W...
Page 43 CTS55 Getting Started With Autotest Explanations: RF connection to mobile For the RF connection to the mobile station, a high-grade cable should be used with an attenuation ideally below 0.5 dB per meter. Hand held mobiles can be connected using the car installation set offered by suppliers of mobiles.
Page 44 Getting Started With Autotest CTS55 Step 3 After pressing the "Start" key in the Home Menu the Autotest Start Menu screen is displayed. Select the mobile type from the list using the "MS Type" keys to scroll through the list. Use the "Mode"...
Page 45 CTS55 Getting Started With Autotest Explanations: "MS Type" select keys These keys are used to scroll through the list of mobile types. Selecting a mobile type will cause the values allocated to the mobile for Input Att, Output Att and the signal level for the sensitivity measurement (RxLev/RxQual and bit error rate) to be used during the test.
Page 46 Getting Started With Autotest CTS55 Status message Step 4 Call to MS: run After the Location Update the Activity message When mobile rings please answer. mobile is called from the test station. Answer the call when the tele- phone rings. G H I Ü...
Page 47 CTS55 Getting Started With Autotest Explanations: CTS sends a call to the mobile. When the mobile rings, the user must press the relevant phone button. As a result, a speech link is set up on the first channel, which can be selected in the configuration menu.
Page 48 Getting Started With Autotest CTS55 Status message Step 7 Callfrom: run Activity message Make a call from the mobile. Please initiate a call from the mobile G H I Ü V W Status message test step been Callfrom : successfully completed --------------------------------------------------------------------------------- -------------------------------------------- Status messages...
Page 49 CTS55 Getting Started With Autotest Explanations: When the mobile has synchronised via the broadcast channel (SERVICE is indicated on the mobile’s display), the user is requested to make a call from the mobile. At this point the user may dial any number.
Page 50 Getting Started With Autotest CTS55 Status message Step 10 Phase RMS: run Phase PK : run The phase and frequency errors Frequency : run as well as the power ramp are Ramp : run measured during this step. Status message This message shows when the Phase RMS: pass test step is complete.
Page 51 CTS55 Getting Started With Autotest Explanations: In this step the power ramp, the phase error (PK) phase error (RMS) and the frequency error is measured. These measurements check the quality of the transmitter of the mobile. Both the power ramp graph and the frequency error graph can be displayed at the end of the Autotest sequence. For the BER measurement the mobile is set into the "Loop Back"...
Page 52 Getting Started With Autotest CTS55 Step 18 After the test sequence has finished the menu will have new buttons shown opposite side. The "Restart" key will repeat the test sequence. The "Start Menu" key will return Start Menu Autotest. The "Meas" key will go to the Power ramp Menu where power ramp...
Page 53: Autotest Sequence In Detail
CTS55 Test Sequence Autotest Sequence in Detail General The tests to be carried out in the Autotest mode are optimised to enable the user to draw a conclusion in the shortest possible time on whether the mobile is functioning correctly or not. The CTS is however not capable of checking the GSM specification in all its details.
Page 54 Test Sequence CTS55 In the description of the automatic sequence below it is assumed that the measurements are carried out on two channels and that the wide tolerances are used. In the description of the steps of the Autotest the possible causes for an error are listed. This list cannot be regarded as complete and merely contains possible faults that are easy to eliminate e.g.
Page 55: 1St Step - Start
CTS55 Test Sequence 1st Step - Start The Autotest Start Menu can be used to select the mobile type for testing and to set the coupler if one is being used. In this menu also is displayed the New External Attenuation Settings for a “low”, “mid” and “high”...
Page 56 Test Sequence CTS55 MS Type Details Menu The „Autotest Running“ menu displayed in Autotest when the „Start“ key is pressed, is determined by the band settings of the currently selected band within the „Handover Details“ menu. This menu can be selected from within the main configuration menu.
Page 57 CTS55 Test Sequence Autotest Running Menu Autotest Running Menu If the instrument has been configured for Dual Band handover, as in the above example, then a two band autotest sequence will be attempted. This is depicted by the HO step in the signalling box. A single band test will contain the NwRel as the final signalling step.
Page 58: 2Nd Step - Location Update
Test Sequence CTS55 2nd Step - Location Update The CTS sends the broadcast information on the control carrier (C0). If following a request the mobile is switched on, it will attempt to synchronise to this carrier by performing a Location Update. Should the synchronisation be successful, the CTS terminates this test step with "...
Page 59: 3Rd Step - Call To
CTS55 Test Sequence 3rd Step - Call to MS The CTS makes a call to the mobile. When the mobile is ringing, the user must answer the call by pressing the appropriate button on the mobile station. If the mobile functions properly, the speech link on channel 1 is now set up.
Page 60: 6Th Step - Call From
Test Sequence CTS55 6th Step - Call From MS After a short wait, the user will be requested to make a call from the mobile. Any number can be selected. It is useful for the called number to contain all 10 digits (0 to 9) as this tests all numeric keys. The CTS displays the dialled number (and outputs it in the test report printout) below the test results box.
Page 61: 7Th Step - Ms Average Power
CTS55 Test Sequence 7th Step - MS Average Power The average output power of the mobile is measured at three levels. The levels which are used for the measurement depend on the configured PCL mode, see section 9.5.2. The default PCL mode is the Auto mode.
Page 62 Test Sequence CTS55 The test will be concluded with "pass" if all three measured values lie within their tolerances. The tolerances have been given an appropriate wide window to allow for attenuation inaccuracies when using an antenna coupler. Possible external causes for "fail": •...
Page 63: 8Th Step - Sensitivity (Rxlev And Rxqual)
CTS55 Test Sequence 8th Step - Sensitivity (RxLev and RxQual) Every GSM mobile phone is capable of measuring the power level and quality of the signals it receives. The result of these measurements are the RxLev and the RxQual values. During testing these values reported back to the CTS continuously by the mobile.
Page 64: 10Th Step - Bit Error Rate
Test Sequence CTS55 4.11 10th Step - Bit Error Rate The measurement is performed at the sensitivity level defined for the mobile type. The measurement is made by sending bits to the mobile. The mobile echoes the bits back to the CTS, where the original bits are compared with those echoed back.
Page 65: Test Sequence In Single Step Mode
CTS55 Test Sequence 4.14 Test Sequence in Single Step Mode To operate in the single step mode, the "Test Mode" key in the Autotest Main Menu must be set to "Step". The test procedure is the same as described above. The CTS however stops the test after every step and waits until the "Continue"...
Page 67: Getting Started With Quicktest
CTS55 Getting Started With Quicktest Getting Started With Quicktest Overview The Quicktest, in the same way as the Autotest, comprises a predefined sequence of test steps. How- ever, in order to achieve a particularly fast function test this sequence has been reduced to the absolute minimum.
Page 68: Test Of Mobile
Getting Started With Quicktest CTS55 Test of Mobile DIGITAL RADIO TESTER CTS 55 1094.0006.55 Step 1 As already described in Step 1 of the Autotest the mobile must be connected to the N socket RF RF OUT 2 GSM MENU UP IN/OUT of the CTS.
Page 69 CTS55 Getting Started With Quicktest Explanations: RF connection to mobile For the RF connection to the mobile station, a high-grade cable should be used with an attenuation ideally below 0.5 dB per meter. Hand held mobiles can be connected using the car installation set of- fered by suppliers of mobiles.
Page 70 Getting Started With Quicktest CTS55 Step 3 After pressing the "Start" key in the home menu the Quicktest main menu is opened. Select the mobile type from the list using the "MS Type" keys to scroll through the list. In this menu are displayed the New External Attenuation Set- tings for a “low”, “mid”...
Page 71 CTS55 Getting Started With Quicktest Explanations: "MS Type" select keys These keys are used to scroll through the list of mobile types. Selecting a mobile type will cause the values allocated to the mobile for Input Att, Output Att and the signal level for the sensitivity meas- urement (RxLev/RxQual and bit error rate) to be used during the test.
Page 72 Getting Started With Quicktest CTS55 Activity message Step 4 Answer, if the phone rings After the Location Update the mobile is called from the test station. The background of the second symbol changes to yel- low. Answer the call when the phone rings.
Page 73 CTS55 Getting Started With Quicktest Explanations: CTS sends a call to the mobile. When the mobile rings, the user must press the relevant phone but- ton. As a result, a speech link is set up on the first channel, which can be selected in the configura- tion menu.
Page 74 Getting Started With Quicktest CTS55 Step 7 After the test sequence has finished the menu will have new buttons as shown oppo- site. Press "Restart" to start test sequence again. Press "Start Menu" to call up the Autotest Main Menu. For an error free test all symbols must show a green back- ground.
Page 75: Getting Started With Manual Test
CTS55 Getting Started With Manual Test Getting Started With Manual Test Overview Unlike Autotest and Quicktest the Manual Test mode does not have a fixed sequence of tests. Instead the user selects the required test using the buttons and menus. In Manual Test mode the CTS for digital mobiles is easy and convenient to operate thanks to its clear- cut menu structure.
Page 76: Test Of Mobile
Getting Started With Manual Test CTS55 Test of Mobile DIGITAL RADIO TESTER CTS 55 1094.0006.55 Step 1 Connect the N socket RF IN/OUT of CTS with antenna connector of RF OUT 2 GSM mobile. MENU UP D EF G H I RF IN / OUT GSM Make sure that the mobile is ÜV W...
Page 77 CTS55 Getting Started With Manual Test Explanations: RF connection to mobile For the RF connection to the mobile station, a high-grade cable should be used with an attenuation ideally below 0.5 dB per meter. Hand held mobiles can be connected using the car installation set offered by suppliers of mobiles.
Page 78 Getting Started With Manual Test CTS55 Step 3 After the start button is pressed in the Home Menu the CTS is now transmitting the control channel (BCCH) and is waiting for the mobile phone to synchronise (Text "Waiting for location update or make a call from the mobile"...
Page 79 CTS55 Getting Started With Manual Test Explanations: Location Update The mobile is requested to make a Location Update on the control channel. By the Location Update, the base station is informed that a specific mobile has been switched on in its area and is ready to make and receive calls.
Page 80 Getting Started With Manual Test CTS55 Step 4 It is now possible to call the mobile phone by pressing the "Call to mobile" key or by dialling G H I a number on the mobile phone. Ü V W In both cases, the display will change to the Call Established Menu This is the central measurement...
Page 81 CTS55 Getting Started With Manual Test 1094.0006.55...
Page 82 Getting Started With Manual Test CTS55 Step 5 The call to the mobile is released when pressing softkey "Call Release". Menu "MS Test/updated" appears again. Call Established Menu In the "MS Test/updated" menu is a softkey labelled "Send SM". By pressing this softkey a fixed text short message...
Page 83 CTS55 Getting Started With Manual Test 1094.0006.55...
Page 84: Transmitter Measurements
Getting Started With Manual Test CTS55 Transmitter Measurements Step 1 In the Call Established Menu the currently used Power Control Level (Ctrl Level), RF channel and the transmitted power of the CTS (BS Signal) are displayed together with measurements of the phase and frequency errors.
Page 85 CTS55 Getting Started With Manual Test Explanations: Phase/Frequency Error GSM mobile phones synchronise themselves to the frequency of the base station. The CTS therefore measures the frequency error (frequency offset) of the mobile transmitter and not the absolute frequency. The phase error is measured by calculating the expected phase of the RF signal from the decoded bits and comparing this to the actual phase measured by the CTS.
Page 86: Receiver Measurements
Getting Started With Manual Test CTS55 After selecting "Phase Freq" by pressing the "Measure Select" key and starting the measu- rement ("Start Measure") in the Call Established menu Phase Frequency menu with the detailed measurement results will be displayed. Phase Frequency Menu Receiver Measurements Step 1 In the Call Established menu...
Page 87 CTS55 Getting Started With Manual Test Explanation: Maximum and Average Values In this menu the actual, average and maximum phase and frequency measurements are displayed for a given number of bursts. The actual number of bursts used can be selected with the "Number of Samples"...
Page 88: Ber Sensitivity Measurement
Getting Started With Manual Test CTS55 6.4.1 BER Sensitivity measurement This measurement is able to measure mobile’s receive sensitivity which is defined as the lowest "BS Signal" that allows the BER measurement results to be just within configured tolerances. This measurement can be started from the "Call Established"...
Page 89: Gprs/Bler Measurements
CTS55 Getting Started With Manual Test GPRS/BLER Measurements The CTS-K4 software option is required in order to perform the GPRS/BLER tests. The CTS provides the single slot GPRS Block Error Rate measurement and the indications of the following Mobile-initiated procedures: GPRS Attach, GPRS Routing Area Update(RAU) and GPRS Detach.
Page 90: Gprs Block Error Rate
Getting Started With Manual Test CTS55 6.5.2 GPRS Block Error Rate After pressing the "BLER" key in the MS Test/Updated Menu the Block Error Rate screen is displayed. The Error Rate and the Data Rate values are calculated from the number of invalid blocks reported to the CTS by the MS.
Page 91: Module Test
CTS55 Module Test Module Test Overview Module test is an optional facility (option B7) for the CTS which provides a new test and an associated second RF connector. If the option is available this will be indicated on the "Available Options" menu. The main purpose of Module Test is to allow measurements to be made of a mobile’s transmitted signal.
Page 92: Menu Hierarchy
Module Test CTS55 Menu hierarchy The diagram below shows the menu structure of Module Test, which is in addition to the standard menus on the CTS. Home Module Test Conf. Config IQ Burst Burst Spectrum Analysis Spectrum Analysis Config IQ Power Phase Signal...
Page 93: Starting Module Test
CTS55 Module Test Starting Module Test Home Menu On entering Module Test via the test selection on the "Home" menu you are presented with a new menu, "Module Test". Module Test Menu In the "Module Test" menu the selection of the MS Type to be used can be made by scrolling through the displayed list with the "MS Type"...
Page 94: Burst Analysis
Module Test CTS55 Burst Analysis 7.4.1 Configuration Conf. Burst Analysis Menu The "Conf. Burst Analysis" menu is available via both the main configuration menu and within Module Test itself, from the "Module Test" menu. Configuration of the values is done by using the softkeys. Trigger Mode The CTS needs to detect when a burst occurs.
Page 95: Running The Burst Analysis Measurement
CTS55 Module Test 7.4.2 Running the Burst Analysis measurement Burst Analysis Menu Entering the "Burst Analysis" menu via the "Module Test" menu allows all the Burst Analysis measurements to be made. The mobile should be put into its special test mode, in particular the frequency of the mobile’s transmitted signal and the training sequence used will need to be specified.
Page 96: The Measurement Results
Module Test CTS55 7.4.3 The Measurement Results Apart from Peak Power the following measurement results are the same as made in Manual Test. Freq Err. The difference between the actual and expected received frequency of the input signal. Phase Peak The worst case phase error in the measured burst.
Page 97: Other Measurements
CTS55 Module Test 7.4.4 Other Measurements Using the "Select" softkey followed by "Start" enters a new menu. These new menus are for the "Power Ramp" measurement, the "Phase Frequency" measurement and control of the "RF Signal Generator". The two measurements are described below. For details of the "RF Signal Generator" menu refer to section 7.6.
Page 98: Phase Frequency
Module Test CTS55 7.4.4.2 Phase Frequency Phase Frequency Menu The Phase Frequency measurement is similar to that in Manual Test, as described in section 9.7.7. The template configuration is tied to the Manual Test values. Exp. Power The power that you expect to be received by the CTS. This value aids the system’s search for the signal.
Page 99: Iq Spectrum
CTS55 Module Test IQ Spectrum 7.5.1 Configuration Config. IQ Spectrum Menu The "Conf. IQ Spectrum" menu is available via both the main configuration menu and within Module Test itself, from the "Module Test" menu. Configuration of the values is done using the softkeys. Mode Specifies whether the received signal will be bursting or a continuous wave.
Page 100: Running The Iq Spectrum Measurement
Module Test CTS55 7.5.2 Running the IQ Spectrum measurement IQ Spectrum Menu (with markers) IQ Spectrum Menu (without markers) Entering the "IQ Spectrum" menu via the "Module Test" menu allows the IQ Spectrum measurement to be made. The mobile should be put into its special test mode, in particular the frequency of the mobile’s transmitted signal needs to be specified.
Page 101: The Sensitive Power Measurement
CTS55 Module Test 7.5.4 The Sensitive Power Measurement In order to produce the accurate low level measurement, the SPM Calibration has been introduced. The Sensitive Power Measurement feature is activated automatically when the input signal level is lower than –10 dBm. When the measurement is active the SPM sign is displayed at the top of the menu screen.
Page 102 Module Test CTS55 If the CTS accepted the 0dBm signal and the calibration is successful the “Calibration OK” message is displayed and SPM Offset value (see 7.4.1) is adjusted automatically. SPM Calibration failed If the CTS was not able to use the supplied signal for the SPM Calibration procedure, then the “Calibration failed”...
Page 103: Rf Signal Generator
CTS55 Module Test RF Signal Generator RF Signal Generator Menu The "RF Signal Generator" transmits an RF signal, many of whose characteristics can be configured. This menu is accessible via both the "Burst Analysis" menu and the "IQ Spectrum" menu. RF Gen Enables the RF Generator to be turned ON or OFF.
Page 104: Technical Information
Module Test CTS55 Technical Information 7.7.1 Frequency ranges The following three diagrams show the frequency ranges that can be handled by Module Test. Note that the frequencies cover a wider range than the usual network frequencies. This means that some frequencies, when set as a channel number, are represented with negative channel numbers.
Page 105 CTS55 Module Test DCS 1800 Frequency In MHz 1710 1805 1785 1880 DCS1800- MS ->BS DCS1800- BS ->MS 1700 2000 1511 Frequency Range Burst Analysis 1700 1910 1436 Frequency Range RF-Gen 1800 1990 Channel No. MS - BS Channel No. BS - MS DCS 1900 Frequency In MHz 1850...
Page 107: Rf Connection
CTS55 RF Connection RF connection RF Connection of the Mobile Phone Using a Cable The RF cable used should ideally be of low-loss, high-grade quality. Manufacturers of mobiles mostly provide an RF cable that comes with a mating plug for the RF socket on the mobile. Kits for in-vehicle fitting are often offered with handies.
Page 109: Detailed Description Of The Menus
CTS55 Description of the Menus Detailed Description of the Menus Menu Structure Overview The entire menu structure is divided into four parts: The first part consists of the menus seen immediately after power on, that is the Logo screen, the Available Options Menu and the Home Menu.
Page 111: Some Basic Elements Of The Man Machine Interface
CTS55 Description of the Menus Some Basic Elements of the Man Machine Interface The use of the Man Machine Interface is very straight forward. The functionality is intuitive, however the following two elements need further explanation. 9.3.1 Multi Field Editing The above screen is an example of Multi-field editing.
Page 112: Single Field Editing
Description of the Menus CTS55 9.3.2 Single Field Editing The mechanism to change the value within the field with the arrow keys is the same as for the Multi- Field editing but the accepting of the change is different. To accept the value the "Ok" key has to be pressed rather than the "Clear"...
Page 113: Home Menu
CTS55 Description of the Menus Home Menu This is the Home Menu of the system. It is displayed after startup of the system and when either the Manual test, the Autotest, the Quicktest, the Module Test or the Configuration menus are left. From the Home Menu each part of the system can be reached (see menus Structure Graph).
Page 114: Auto Test Menus
Description of the Menus CTS55 Auto Test Menus 9.5.1 Autotest Start Menu Autotest Start Menu This menu is displayed after the Autotest is activated. On the lleft side of the menu the level chosen for the sensitivity and the BER measurement during the test sequence is indicated.
Page 115: Autotest Config Menu
CTS55 Description of the Menus 9.5.2 Autotest Config Menu Autotest Config Menu This menu is used to configure the Autotest and to set the network parameters (how network parameters can be set is explained in the "Config Network Menu"). The configuration parameters of the Autotest comprise the number of channels, the number of frames for the bit error rate measurement as well as the tolerance ranges used.
Page 116: Autotest Running Menu (Pass/Fail)
Description of the Menus CTS55 9.5.3 Autotest Running Menu (Pass/Fail) In this menu the Autotest is running. This screen indicates the results of each step of the Autotest in the pass/fail mode. Once the Autotest has been started the CTS carries out the signalling tests in the following order: Location Update (LocUpd) Call to Mobile (Callto) Echo Test (Echo)
Page 117: Autotest Running Menu (Values)
CTS55 Description of the Menus 9.5.4 Autotest Running Menu (Values) This screen indicates the results of each step of the Autotest as values. Stop Pressing this key stops the measurement sequence. The Autotest Result screen will be displayed. Tolerance Pressing this key displays the test tolerances as shown in the following menu. 1094.0006.55...
Page 118: Autotest Tolerances Menu
Description of the Menus CTS55 9.5.5 Autotest Tolerances Menu This screen indicates the tolerances of each step of the Autotest. Stop Press this key to interrupt the measurement sequence and to display the Autotest Result Screen. Pass/Fail Press this key to switch to the Pass/Fail screen of the Autotest. 1094.0006.55 9.10...
Page 119: Autotest Result Screen
CTS55 Description of the Menus 9.5.6 Autotest Result Screen Autotest Results Menu Autotest Results Menu When the measurement sequence has finished, one of the two Autotest Result screens is displayed (as shown above). If only a single band test has been completed then the „Other Band“ key will not be present and the Handover step will not have been attempted as is indicated in the first menu.
Page 120: Quicktest Menus
Description of the Menus CTS55 Quicktest Menus 9.6.1 Quicktest Main Menu This menu appears when the Quicktest is activated. The settings are shown on the left hand side at the top of the screen. They are the input and the output attenuations for the chosen mobile type (settings for a “low”, “mid”...
Page 121: Config-Quicktest Menu
CTS55 Description of the Menus 9.6.2 Config-Quicktest Menu This menu is used to set the channel on which the Quicktest is carried out and to set the network parameters. (How network parameters can be set is explained in the "Config Network Menu"). 1094.0006.55 9.13...
Page 122: Quicktest - Test Menu
Description of the Menus CTS55 9.6.3 Quicktest - Test Menu In this menu the Quicktest is running. The following test steps are executed in sequence: Location Update (LocUpd) Call to Mobile (Callto) Echo Test (Echo) Network Release (NwRel) As soon as a test step is active the status display below the appropriate symbol starts flashing and the colour of the symbol itself changes to yellow.
Page 123: Quicktest - Result Menu
CTS55 Description of the Menus 9.6.4 Quicktest - Result Menu This menu appears if the Quicktest was aborted or after all test steps have been executed. A window appears at the bottom of the screen showing the total result of the Quicktest. Restart Press this key to restart the test.
Page 124: Manual Test Menus
Description of the Menus CTS55 Manual Test Menus 9.7.1 MS Test/Wait Sync Menu This menu appears when the Manual Test is activated. The BCCH information is transmitted on the Control channel and the CTS waits for a Location Update or for a call from the mobile station. On the top left side of the menu important Manual Test settings are indicated, these are: •...
Page 125: Manual Test Menu
CTS55 Description of the Menus 9.7.2 Manual Test Menu In this menu all important Manual Test specific parameters can be changed. This is the Control Channel Number and the Traffic Channel Number as well as the CTS transmit level for the traffic channel. In addition, the network parameter can also be changed.
Page 126: Select Ms Type Menu
Description of the Menus CTS55 9.7.3 Select MS Type Menu Select MS Type Menu In this menu the mobile type can be selected and the coupler can be switched on or off. View the external attenuation for corresponding selected MS Type by entering the MS Type Details Menu. This now displays the attenuation settings for all 3 networks.
Page 127: Ms Test/Updated Menu
CTS55 Description of the Menus 9.7.4 MS Test/Updated Menu Test/updated Menu - Single Band MS Test/updated Menu - Dual Band MS After a successful Location Update this screen appears. On the right side of the display essential data of the mobile is displayed. This data has been recorded during the Location Update. •...
Page 128: Handover Details Menu
Description of the Menus CTS55 Any power received from the mobile is indicated by the power indicator bar and an appropriate message for "Call to mobile" or "Call from the mobile" starts to blink. To send a "Short Message" to the mobile, the key "Send SM" has to be pressed. The MS Details button will indicate to the user if the Mobile Station is capable of supporting Extended GSM frequencies and / or is Dual Band (900 / 1800 MHz).
Page 129: Call Established Menu
CTS55 Description of the Menus 9.7.5 Call Established Menu Call Established Menu - In Band Only Call Established Menu - Dual Band The Call Established menu appears after a connection on the Traffic Channel is established between the CTS and the mobile. This menu is the central menu for the CTS in Manual Test mode. While keeping the connection with the mobile station the CTS carries out several cyclic measurements on the signal transmitted by the mobile station and displays the results in this menu.
Page 130 Description of the Menus CTS55 If the Dual Band Options have been selected in the Handover Details Menu (See Section 9.7.4.1 and 9.9.13) then a Fourth Option Handover is available in the Ramp, Phase/Freq and BER menu bar. This option is needed to initiate a “Handover” to the selected network. If the CTS is configured to In-Band channel changes, then NO handover option will be available in the measurement bar.
Page 131: Power Ramp Menu
CTS55 Description of the Menus 9.7.6 Power Ramp Menu In this screen the Power Ramp of the signal transmitted by the mobile station is displayed as a function of time. On the display there is also the tolerance mask for the power ramp which must not be exceeded by the ramp.
Page 132: Phase Frequency Menu
Description of the Menus CTS55 9.7.7 Phase Frequency Menu In this menu, the phase error of the signal transmitted by the mobile is displayed as a function of the time. In addition the peak phase error, the RMS phase error and the frequency error are indicated by their measured values.
Page 133: Bit Error Rate Menu
CTS55 Description of the Menus 9.7.8 Bit Error Rate Menu In this menu the bit error of the mobile is calculated and displayed. To perform this measurement a special SIM CARD (i.e. R&S GSM test SIM CRT-Z2) is required which allows the RF loop back at the mobile station.
Page 134: Ber Sensitivity Measurement
Description of the Menus CTS55 9.7.9 BER Sensitivity measurement This measurement is able to measure a mobile’s receive sensitivity which is defined as the lowest "BS Signal" that allows the BER measurement results to be just within the configured tolerances. This measurement can be started from the "Call Established"...
Page 135: Measurement Configuration Menus
CTS55 Description of the Menus Measurement Configuration Menus 9.8.1 Config Power Ramp In this menu the tolerances for the power ramp measurement are defined. These are largely identical with the relative level values for the power ramp template. The power ramp template is defined with reference to the power used by the mobile to transmit.
Page 136: Config Phase/Freq Menu
Description of the Menus CTS55 9.8.2 Config Phase/Freq Menu This menu is used to define the tolerances for the phase and frequency error measurement. The phase and frequency error measurement supplies the results for the phase error (Peak), the phase error (RMS) and the frequency error, the current value as well as the maximum and average values for a predefined number of bursts.
Page 137: Config Ber Menu
CTS55 Description of the Menus 9.8.3 Config BER Menu This menu is used to define the tolerances for the bit error rate measurement. The following values must be defined: Number of speech frames The number of speech frames defines how many bits are used for the bit error measurement. Each speech frame contains 270 bits allocated to the classes IA, IB and II.
Page 138: Config Ber Sensitivity
Description of the Menus CTS55 9.8.4 Config BER Sensitivity This menu is used to define the parameter for the sensitivity measurement. Rate Class II This value defines the percentage for the permissible maximum number of incorrect bits from class II. The maximum number of incorrect bits is shown in the Events column.
Page 139: General Configuration Menus
CTS55 Description of the Menus General Configuration Menus 9.9.1 Config - Select These two menus are the selection menus of the configuration part of the CTS. The configuration menus listed in the middle of the screens can be selected directly. The available options can be displayed by pressing the Options key.
Page 140: Config Bs Signal
Description of the Menus CTS55 9.9.2 Config BS Signal This menu is used to change the main Parameters dedicated to the Manual Test, which are: • The channel number of the Control Channel (Control Chan). This is the channel on which the CTS sends out the control information.
Page 141: Config Channels
CTS55 Description of the Menus 9.9.3 Config Channels This menu is used to change the main parameters dedicated to the Autotest. For a description of the fields see section 9.5.2. 1094.0006.55 9.33...
Page 142: Config Quicktest (Channel)
Description of the Menus CTS55 9.9.4 Config Quicktest (Channel) This menu is used to define the channel on which the Quicktest is to be carried out. 1094.0006.55 9.34...
Page 143: Config Ms Type And Ms Type Edit
CTS55 Description of the Menus 9.9.5 Config MS Type and MS Type Edit Config MS Type Menu MS Type Edit Menu In the main menus of the Manual test, Autotest, Quicktest and Module test a mobile type can be selected. The mobile types (100 max) are no longer network dependent and are available irrespective of network setting.
Page 144 Description of the Menus CTS55 Installing CTS New MS Types over pre X2.06.3 CTS MS Types Upon the first installation of the X2.06.5 Software onto a CTS with software previous to X2.06.3 then the CTS will do a simple conversion routine to retain the previous MS Type lists. The input / output attenuations associated to a MS Type will be duplicate for each „low“, „mid“...
Page 145: Config Network
CTS55 Description of the Menus 9.9.6 Config Network (GSM900/1800) (GSM850/1900) In this menu the main parameters of the network simulated by the CTS are defined. These are: • The Mobile Country Code (MCC). This parameter defines the country in which the simulated network would be located.
Page 146: Config Date/Time
Description of the Menus CTS55 9.9.7 Config Date/Time With this menu the date and time of the system can be changed. 1094.0006.55 9.38...
Page 147: Config Language
CTS55 Description of the Menus 9.9.8 Config Language With this menu the language of the system can be selected. This means all text shown in all menus is changed according to the selected language. 1094.0006.55 9.39...
Page 148: Config Password
Description of the Menus CTS55 9.9.9 Config Password In this menu the password protection of the configuration menus can be activated and deactivated. Also by pressing the Change Password key a new password can be entered. In this case the screen on the right is displayed for password entry.
Page 149: Comment Menu
CTS55 Description of the Menus 9.9.10 Comment Menu In this menu a comment can be entered which is printed into the printer protocol. 1094.0006.55 9.41...
Page 150: Config Keyboard Menu
Description of the Menus CTS55 9.9.11 Config Keyboard Menu This menu is used to define which country specific keyboard has been connected. 1094.0006.55 9.42...
Page 151: Config Com Port
CTS55 Description of the Menus 9.9.12 Config Com Port This menu allows the RS232 interface parameters to be selected: Baud Rate 1200, 2400, 4800, 9600, 19200 Data Bits 7, 8 Stop Bits 1, 2 Parity None, Even, Odd Protocol None, Xon/Xoff, CTS/RTS The CTS handshaking protocol for the RS232 Communication Port defaults to CTS\RTS.
Page 152: Config Dual Band Handover Menu
Description of the Menus CTS55 9.9.13 Config Dual Band Handover Menu Config Handover Details Menu – GSM900 No Handover Option Config Handover Details Menu – GSM900/GSM1800 Handover Option Config Handover Details Menu – GSM900/GSM1900 Handover Option The Dual Band Option enables the user to test Dual-Band MS types. This enables the test time cycle to be improved due to the reduction in signalling time required for Location Update and to establish a call is only required once.
Page 153: Handover Network
CTS55 Description of the Menus 9.9.13.1 Handover Network HANDOVER NETWORK represents the target network to which dual-band handover shall be done. This selection is necessary because there is no criteria on distinguishing between the networks GSM1800 and GSM1900. GSM1800 GSM1800 DUAL BAND HANDOVER GSM900 R-GSM E-GSM...
Page 154: Handover Mode
Description of the Menus CTS55 9.9.13.3 Handover Mode If the current network selection is GSM900/1800 or GSM900/1900 then the HANDOVER MODE softkey is available. Two modes of dual-band handover are defined: a) Separate The Control Channel (required for location update) on the original network is dropped, leaving only the Traffic Channel (required for call established/measurements) on the new network.
Page 155: Enhanced Measurement And Test Report Printout
CTS55 Test Report Printout Enhanced Measurement and Test Report Printout Comment The comment which is defined in the configuration menu. Test station Name and manufacturer of the mobile tester for which this test report was produced. Date and Time Date and time of the test. Mobile The designation of the mobile entered is that chosen with the "MS Type"...
Page 156 Test Report Printout CTS55 MS Sensitivity This table shows the transmit level of the CTS and the receive level measured by the mobile (RxLev). The parameter receive quality (RxQual) is also listed here. The measurement is carried out with a selectable transmit level of the mobile tester.
Page 157 CTS55 Test Report Printout Dialled number The telephone number selected in the test step "Call from MS" is shown here. If the CTS initiates the call this number will be the default value set in the software. Overview of Measurement steps The individual test steps are listed again together with the information about whether they have been correctly executed (OK) or found to be erroneous (Fail).
Page 158 Test Report Printout CTS55 Test Report Printout +--------------------------------------------------------------------+ | The Well Known Mobile Phone Company Limited - GSM Mobile Test | Test Station: CTS55 Rohde & Schwarz | Page: | Date: 27.09.1994 | Time: 12:06 +--------------------------------------------------------------------+ | Mobile: Mobile 1 with R&S coupler | Coupler Input Attenuation: | Coupler Output Attenuation: 15.0...
Page 159 CTS55 Test Report Printout +--------------------------------------------------------------------+ | The Well Known Mobile Phone Company Limited - GSM Mobile Test | Test Station: CTS55 Rohde & Schwarz | Page: | Date: 27.09.1994 | Time: 12:06 +--------------------------------------------------------------------+ | Measurement results on channel: | MS Output Power: Standard [dBm] Measured [dBm] Tolerance [dBm]...
Page 160 Test Report Printout CTS55 +-------------------------------------------------------------------------+ | Test Station :CTS55 Rohde & Schwarz Date: 02.10.2001 | Serial number :123456/789 Time: 12:06 +------------------------------------------------------------------ | Type of mobile : Model3210 | LOW:Coupler input attenuation: | LOW:Coupler output Attenuation: | MID:Coupler input Attenuation: | MID:Coupler output Attenuation: | HIGH:Coupler input Attenuation: | HIGH:Coupler output Attenuation: +-----------------------------------------------------------------+...
Page 161: Remote Control
CTS55 Remote Control Remote Control 11.1 Introduction The instrument is equipped with a serial interface (RS 232-C). The connector is located at the rear of the instrument and permits to connect a controller for remote control. The instrument supports the SCPI version 1992.0 (Standard Commands for Programmable Instruments).
Page 162: Switchover To Remote Control
Remote Control CTS55 11.3 Switchover to Remote Control On power-on, the instrument is always in the manual operating state ("LOCAL" state) and can be operated via the front panel. It is switched to remote control ("REMOTE" state) as soon as it receives a command from a controller.
Page 163: Structure And Syntax Of The Device Messages
CTS55 Remote Control 11.5 Structure and Syntax of the Device Messages 11.5.1 SCPI Introduction SCPI (Standard Commands for Programmable Instruments) describes a standard command set for programming instruments, irrespective of the type of instrument or manufacturer. The goal of the SCPI consortium is to standardize the device-specific commands to a large extent.
Page 164 Remote Control CTS55 SOURce POWer POLarity MODE EXTernal STATe INTernal POLarity COUPling Fig. 11-1 Tree structure of the SCPI command systems using the SOURce system by way of example Some key words occur in several levels within one command system. Their effect depends on the structure of the command, that is to say, at which position in the header of a command they are inserted.
Page 165: Structure Of A Command Line
CTS55 Remote Control Long and short form: The key words feature a long form and a short form. Either the short form or the long form can be entered, other abbreviations are not permissible. Example: STATus:QUEStionable:ENABle 1= STAT:QUES:ENAB 1 Note: The short form is marked by upper-case letters, the long form corresponds to the complete word.
Page 166 Remote Control CTS55 Example: SOURce:FM:MODE LOCKed;:SOURce:FM:INT:FREQuency 1kHz " " This command line is represented in its full length and contains two commands separated from each other by the semicolon. Both commands are part of the SOURce command system, subsystem FM, i.e. they have two common levels. When abbreviating the command line, the second command begins with the level below SOURce:FM.
Page 167: Responses To Queries
CTS55 Remote Control 11.5.4 Responses to Queries A query is defined for each setting command unless explicitly specified otherwise. It is formed by adding a question mark to the associated setting command. According to SCPI, the responses to queries are partly subject to stricter rules than in standard IEEE 488.2.
Page 168: Parameters
Remote Control CTS55 11.5.5 Parameters Most commands require a parameter to be specified. The parameters must be separated from the header by a "white space". Permissible parameters are numerical values, Boolean parameters, text, character strings and block data. The type of parameter required for the respective command and the permissible range of values are specified in the command description (see Section 11.6).
Page 169 CTS55 Remote Control Text Text parameters observe the syntactic rules for key words, i.e. they can be entered using a short or long form. Like any parameter, they have to be separated from the header by a white space. In the case of a query, the short form of the text is provided.
Page 170: Overview Of Syntax Elements
Remote Control CTS55 11.5.6 Overview of Syntax Elements The following survey offers an overview of the syntax elements. The colon separates the key words of a command. In a command line the colon after the separating semicolon marks the uppermost command level.
Page 171: Description Of Commands
CTS55 Remote Control 11.6 Description of Commands 11.6.1 Notation In the following sections, all commands implemented in the instrument are first listed in tables and then described in detail, separated according to the command system. The notation corresponds to the one of the SCPI standards to a large extent.
Page 172 Remote Control CTS55 Special characters A selection of key words with an identical effect exists for several commands. These key words are indicated in the same line, they are separated by a vertical stroke. Only one of these key words has to be indicated in the header of the command.
Page 173: Common Commands
CTS55 Remote Control 11.6.2 Common Commands The common commands are taken from the IEEE 488.2 (IEC 625-2) standard. Same commands have the same effect on different devices. The headers of these commands consist of "*" followed by three letters. Many common commands refer to the status reporting system which is described in detail in Section 11.8.
Page 174 Remote Control CTS55 *IDN? IDENTIFICATION QUERY queries the instrument identification. The device response is for example : ROHDE&SCHWARZ,CTSzz,ssssss/sss,x.xx yy.yy.yy (zz is the model no., eg 55 or 65 ssssss/sss is the serial no., eg 101183/005 x.xx is the software version, eg V 1.00 yy.yy.yy is the date, eg 18.10.93) *IST? INDIVIDUAL STATUS QUERY returns the contents of the IST flag in decimal form (0 | 1).
Page 175 CTS55 Remote Control *PRE 0...255 PARALLEL POLL REGISTER ENABLE sets parallel poll enable register to the value indicated. Query *PRE? returns the contents of the parallel poll enable register in decimal form. *PSC 0 | 1 POWER ON STATUS CLEAR determines whether the contents of the ENABle registers is maintained or reset in switching on.
Page 176: Instrument Model And Command Processing
Remote Control CTS55 11.7 Instrument Model and Command Processing The instrument model shown in Fig. 11-2 has been made viewed from the standpoint of the servicing of remote-control commands. The individual components work independently of each other and simultaneously. They communicate by means of so-called "messages". Input unit with RS232 input puffer...
Page 177: Status Reporting System
CTS55 Remote Control 11.8 Status Reporting System The status reporting system (cf. Fig. 11-4) stores all information on the present operating state of the instrument and on errors which have occurred. This information is stored in the status registers and in the error queue.
Page 178 Remote Control CTS55 CONDition part The CONDition part is directly written into by the hardware or the sum bit of the next lower register. Its contents reflects the current instrument status. This register part can only be read, but not written into or cleared. Its contents is not affected by reading.
Page 179: Overview Of The Status Registers
CTS55 Remote Control 11.8.2 Overview of the Status Registers vacant -&- RQS/MSS -&- -&- -&- vacant -&- vacant vacant -&- -&- -&- -&- -&- -&- IST flag (Response to parallel poll) Power on -&- User Request -&- Command Error -&- Execution Error -&- Device Dependent Error...
Page 180: Description Of The Status Registers
Remote Control CTS55 11.8.3 Description of the Status Registers 11.8.3.1 Status Byte (STB) and Service Request Enable Register (SRE) The STB is already defined in IEEE 488.2. It provides a rough overview of the instrument status by collecting the pieces of information of the lower registers. It can thus be compared with the CONDition part of an SCPI register and assumes the highest level within the SCPI hierarchy.
Page 181: Event-Status-Reg. (Esr) And Event-Status-Enable-Reg. (Ese)
CTS55 Remote Control 11.8.3.2 Event-Status-Reg. (ESR) and Event-Status-Enable-Reg. (ESE) The ESR is already defined in IEEE 488.2. It can be compared with the EVENt part of an SCPI register. The event status register can be read out using command "*ESR?". The ESE is the associated ENABle part.
Page 182: Error-Queue Query
Remote Control CTS55 11.8.4 Error-Queue Query Each error state in the instrument leads to an entry in the error queue. The entries of the error queue are detailed plain-text error messages which can be queried via the remote control using command "SYSTem:ERRor?".
Page 183: Examples
CTS55 Remote Control 11.9 Examples Example 1: Call to a mobile phone with measurements Send the following commands to the CTS via a terminal program: Command Comment procedure:select? procedure:select MANUAL selects the Manual Test procedure:select? procedure:call:toms Call to Mobile procedure:select? procedure:set:arfcn 60 set RF frequency to chan 60 (902 MHz uplink)
Page 184 Remote Control CTS55 Example 2: Set RF generator in Module Test Send the following commands to the CTS via a terminal program Command Comment proc:sel modidle go to state "MODIDLE" proc:sel iqspec select IQ Spectrum proc:sel rfg select rf generator conf:rfg:freq 950 MHz set rfg to 950 MHz conf:rfg:pow -60 dBm...
Page 185: Software Options
CTS55 Software Options Software Options 12.1 Overview Software options is a way of turning on extra facilities of the CTS via the softkeys. An option can be enabled either permanently or for a limited period of time. To use software options, two pieces of information are required, these being the CTS’s serial number and a code number for the required software option.
Page 186: Setting The Serial Number
Software Options CTS55 12.3 Setting the Serial Number To set the serial number, firstly enter the "Enable S/W Options" menu via the main configuration menu. Enable S/W Options Menu The serial number is normally entered into the CTS on the production line and can be seen on the "Enable S/W Options"...
Page 187: Setting The Code Number To Enable An Option
CTS55 Software Options 12.4 Setting the Code Number to enable an option First enter the "Enable S/W Options" menu via the main configuration menu. If you have just set the serial number you will already be in this menu. If the serial number is available then it will be shown on the menu, as below. If it is not available then you must enter it as described in section 12.3.
Page 188 Software Options CTS55 Enable S/W Options Menu (Test Enabled) The new option is now available for use. If the option has been enabled for a limited period of time the option will disappear from use after the time period has elapsed. 1094.0006.55 12.4...
Page 189: Performance Test (With Service Software)
CTS55 Performance Test Performance Test (with Service Software) 13.1 Starting the Program • Booting in DOS: All service programs of CTS are only accessible under DOS. Since only part of the VGA picture is displayed on the internal LCD, an external VGA-compatible monitor has to be connected to the rear SERVICE connector before booting.
Page 190: Tests To Be Performed
Performance Test CTS55 13.3 Tests To Be Performed The test selection menu is divided into two sections: Adjustments Here not only adjustments are performed but also checks of the internal diagnosis facility. For some of the diagnostic voltages no trimming facility is provided. If one of these voltages is out of tolerance, the module must be replaced.
Page 191: Remote Control Of Performance Test Program
CTS55 Performance Test 13.4 Remote Control of Performance Test Program The performance test program allows not only manual checking of test points, it can also be remote- controlled via an RS-232 interface. In this case the whole hardware-supported level and frequency range can be tested.
Page 192 Performance Test CTS55 Responses (examples): OK 12.0 ERROR ERROR COMMAND INVALID ERROR strings implemented at present: COMMAND INVALID Command not found COMMAND PARAMETER INVALID Command found, but parameter invalid or wrong format COMMAND LENGTH INVALID Invalid characters or command string too short/long PARAMETER RANGE INVALID Invalid numeric value (too high/low) PARAMETER CODE INVALID...
Page 193: Command Types
CTS55 Performance Test 13.4.3 Command types There are three types of commands: - put commands do not set the hardware, they only transfer data. - set commands set the hardware. - meas commands perform a measurement and return the result. Relationship between ’put’...
Page 194: Special Functions, Device Interdependencies
Performance Test CTS55 13.4.4 Special functions, device interdependencies - reset: The hardware is set to a state where it is least like to be affected. The output level is switched off and the attenuation on the receive path set to maximum to minimize the effect of the local synthesizer.
Page 197 CTS55 Interfaces/Annex A Serial Interface The instrument is equipped with a serial interface (RS-232-C) as standard. The 9-pin connector is located at the rear of the instrument. A controller for remote control can be connected via the interface. The connection is effected using a zero modem cable. For remote control via the serial interface, an important aspect is to be noted: Some controllers already send characters on the serial interface during booting, causing the instrument to switch to the REMOTE state as soon as it receives these characters (since no explicit...
Page 198 Interfaces/Annex A CTS55 Lines 1. Data lines RxD (receive data) and TxD (transmit data) The transmission is bit-serial in the ASCII code starting with the LSB. The two lines are necessary as the minimum requirement for a transmission; however, no hardware handshake is possible, but only the XON/XOFF protocol.
Page 199 CTS55 Interfaces/Annex A Handshake Software handshake In the case of the software handshake, the data transfer is controlled using the two control characters XON / XOFF. The CTS uses the control character XON to indicate that it is ready to receive data. If the receive buffer is full, it sends the XOFF character via the interface to the controller.
Page 200 Interfaces/Annex A CTS55 Cable for local controller coupling in the case of hardware handshake The connection of the CTS to a controller is effected with a so-called zero modem cable. In the case of this cable, the data, control and report lines must be crossed. The following wiring diagram applies to a controller with 9-pin or 25-pin configuration.
Page 201 CTS55 List of Error Messages/Annex B List of Error Messages The following list contains all error messages for errors occurring in the instrument. The meaning of negative error codes is defined in SCPI, positive error codes mark errors specific of the instrument. The table contains the error code in the left-hand column.
Page 202 List of Error Messages/Annex B CTS55 Contiuation: Command Error Error code Error text in the case of queue poll Error explanation Missing parameter -109 The command contains too few parameters. Example: The command CONFigure:RFGen:FREQuency requires a frequency indication. Header separator error -111 The header contains an impermissible separator.
Page 203 CTS55 List of Error Messages/Annex B Continuation: Command Error Error text in the case of queue poll Error code Error explanation Invalid string data -151 The command contains a faulty string. Example:An END message has been received prior to the terminating apostrophe. String data not allowed -158 The command contains a valid string at a position which is not allowed.
Page 204 List of Error Messages/Annex B CTS55 Device Specific Error; sets bit 3 in the ESR register Error code Error test in the case of queue poll Error explanation Device-specific error -300 SM3-specific error not defined in greater detail. Queue overflow -350 This error code is entered in the queue instead of the actual error code if the queue is full.
Page 205 CTS55 List of Commands/Annex C List of Commands / Remote Control General Information 1.1.1 States In the description of the commands, the following abbreviations are used for indication of the permissible states: IDLE: ..Initial state of the CTS; is also achieved by means of PROCedure:SELect[:TEST] NONE. MIDL: MS test selected (BCCH is generated) MSYN:...
Page 206 List of Commands/Annex C CTS55 1.1.2 DCS1800 (GSM1800) If DCS1800 is the desired network type, the switch over must be made by means of CONFigure:NETWork DCS1800 before changing the configuration set-up. After the switch over, all commands act on the DCS1800 data set, without switch over the GSM data set is used. 1.1.3 DCS1900 (GSM1900) If DCS1900 is the desired network type, switchover using CONFigure:NETWork DCS1900 must be...
Page 207 CTS55 List of Commands/Annex C Settings 1.2.1 Input and Output External attenuation at the output RF In/Out Syntax: SOURce1:CORRection:LOSS[:OUTPut][:MAGNitude]<numeric_value> GSM850/ GSM900 / GSM1800 / GSM1900: Value Default: 0.0 … +30.0 (unit: dB) 0.0 dB range: State: Option: With Query Note: Set: IDLE none...
Page 208 List of Commands/Annex C CTS55 External attenuation at the input RF In/Out Syntax: Sense1:CORRection:LOSS[:OUTPut][:MAGNitude]<numeric_value> Value GSM850 / GSM900 / GSM1800 / GSM1900: Default: 0.0 … +30.0 (unit: dB) range: 0.0 dB With Query State: Option: Note: Set: IDLE none Positive values refer to an Query: ALL attenuation, (N1) For backward compatibility the old remote control command which sets a single attenuation value for the...
Page 209 CTS55 List of Commands/Annex C External attenuation at RF Out 2 SOURce2:CORRection:LOSS[:OUTPut][:MAGNitude] <numeric_value> Syntax: Value range: 0.0 ... +15.0 (unit: dB) Default: 0.0 dB With Query State: IDLE Option: B7 Note: Positive values refer to an attenuation, (N1) Coupler Usage SOURce:CORRection:LOSS:COUPler <value>...
Page 210 List of Commands/Annex C CTS55 1.2.2 Signalling and RF Parameters 1.2.2.1 Signalling Parameters of the Mobile Station International Mobile Subscriber Identity (IMSI) Syntax: SENSe:SIGNalling:IDENtity:IMSI? <string> (max. 15 characters) Return: State: MSYN, MCE Option: none Query only Note: (N2) International Mobile Equipment Identity (IMEI) SENSe:SIGNalling:IDENtity:IMEI? Syntax: Return:...
Page 211 CTS55 List of Commands/Annex C Dialled number SENSe:SIGNalling:DNUMber? Syntax: Return: <string> (max. 20 digits) or “- - -“ Option: none Query only State: MCE Note: (N2) Power Class SENSe:SIGNalling:POWer:CLASs? Syntax: Return: GSM: 1 ... 5 GSM850 1 ... 5 DCS1800: 1 ...
Page 212 List of Commands/Annex C CTS55 Power Class Syntax: SENSe:SIGNalling:POWEr:CLASs:CURRent? SENSe:SIGNalling:POWEr:CLASs:SECOnd? Return: GSM850: 1… 5 GSM: 1… 5 GSM1800: 1… 2 GSM1900: 1… 2 State: Option: Query only Note: MSYN, MCE none Current: Power Class information on current network Second: Power Class information on a second network 1094.0006.55...
Page 213 CTS55 List of Commands/Annex C 1.2.2.2 Signalling Parameters for CTS Mobile Country Code CONFigure:SIGNalling:IDENtity:MCC <numeric_value> Syntax: Value range: GSM850 0 ... 999 Default: 1 0 ... 999 DCS1800: 0 ... 999 DCS1900: 0 ... 999 Option: none With Query State: Set: IDLE Query:...
Page 214 List of Commands/Annex C CTS55 Location Area Code CONFigure:SIGNalling:IDENtity:LAC <numeric_value> Syntax: Value range: GSM850 0 ... 65535 Default: 1 0 ... 7 DCS1800: 0 ... 65535 DCS1900: 0 ... 65535 State: Option: none With Query Set: IDLE Query: Channel number (ARFCN) for CCCH CONFigure:CHANnel:CCCH:ARFCn <numeric_value>...
Page 215 CTS55 List of Commands/Annex C Basic power setting for location update and link set-up of mobile station CONFigure:POWer:MS <numeric_value> Syntax: Value range: GSM: 13 ... 39 Default: GSM: GSM850: 13 ... 39 GSM850: 13 DCS1800: 10 ... 30 DCS1800: 10 DCS1900: 10 ...
Page 216 List of Commands/Annex C CTS55 Checking the dualband handover with GSM900/GSM1800 Syntax: CONFigure:SIGNalling:HANDover:CHECK <value> SLOW | with handover check of the mobile Value Default: SLOW range: FAST | without handover check of the mobile State: Option: With Query Note: Set: IDLE none The selected setting is taken into account...
Page 217 CTS55 List of Commands/Annex C 1.2.3 Network and Test Mode Network CONFigure:NETWork[:TYPE] <value> Syntax: GSM | G09 | Default: GSM Value range: GSM850 | G08 | DCS1800 | G18 | PCS1900 | G19 Option: none With Query A Query returns G09, G18 or G19 State: Set: IDLE...
Page 218 List of Commands/Annex C CTS55 1.2.4 Call Set-up and Release Call set-up from the CTS to the mobile (call) PROCedure:CALL:TOMS Syntax: State: MSYN Option: none No Query Call release from the CTS to the mobile (Release) Syntax: PROCedure:RELease:TOMS State: MCE Option: none No Query Change of channel for TCH...
Page 219 CTS55 List of Commands/Annex C Burst Analysis Settings Channel number (ARFCN) and Frequency CONFigure:CHANnel:BANalysis:ARFCn <numeric_value> Syntax: Value range: GSM: -75 ... 450 Default: GSM: GSM850: 127…252 GSM850 : 252 DCS1800: 461 ... 1511 DCS1800: 711 DCS1900: -239 ... 811 DCS1900: 661 State: BAN Option: B7 With Query...
Page 220 List of Commands/Annex C CTS55 RF Generator Settings Channel number CONFigure:RFGen:CHANnel[:CW| <numeric_value> Syntax: Value range: GSM: -175 ... 300 Default: GSM: GSM850: 127... 252 GSM850 : DCS1800: 511... 1436 DCS1800: 486 DCS1900: -139 ... 811 DCS1900: 611 State: RFG Option: B7 With Query Frequency Syntax:...
Page 221 CTS55 List of Commands/Annex C Ramping Mode CONFigure:RFGen:RAMPing:STATe <value> Syntax: Value range: Signal with power ramping Default: OFF Permanent signal State: RFG Option: B7 With Query Output level CONFigure:RFGen:POWer <numeric_value> Syntax: Value range: (-110.0 - ext. att.) ... (-50.0 - ext. att.) dBm Default: -50.0 dBm With Query State: RFG...
Page 222 List of Commands/Annex C CTS55 Measurement, Analysis and Result Query 1.5.1 1.5.1.1 Tolerances for the BER Value for class-Ib Rate Syntax: CONFigure:LIMit:BER:CLIB:RATE 0.0 ... 100.0 Value range: Default: 0.4 State: ALL Option: none With Query Value for class-II Rate Syntax: CONFigure:LIMit:BER:CLII:RATE 0.0 ...
Page 223 CTS55 List of Commands/Annex C Maximal number of events CALCulate:LIMit:BER:CLIB:MEVents? Syntax: CALCulate:LIMit:BER:CLII:MEVents? CALCulate:LIMit:BER:EFRames:MEVents? Return: 0 ... 65868 (Class IB) 0 ... 38922 (Class II) 0 ... 499 (Erased Frames) State: ALL Option: none Query only Note: The values are derived from "Frames to send" and thus cannot be set.
Page 224 List of Commands/Annex C CTS55 1.5.1.2 BER Measurement Measured values of class Ib Syntax: Execute new READ[:SCALar]:BER:CLIB[:BER]? READ[:SCALar]:BER:CLIB:RBER? measurement and signal result FETCh[:SCALar]:BER:CLIB[:BER]? FETCh[:SCALar]:BER:CLIB:RBER? Read result only BER and RBER: 0 ... 100 (Unit: %) Return: State: MCE Option: none Query only Note: No default values, (N4), (N7) If a read is performed on BER, all subsequent fetches will return BER values until a RBER read is carried out.
Page 225 CTS55 List of Commands/Annex C 1.5.2 Power 1.5.2.1 Tolerances for Power Setting Power Template to Configurable or Recommendations Syntax: CALCulate:LIMit:POWer[:TEMPlate]:SET? GSM Recommendations Return: CONFIG | Configurable State: Option: none With Query Default: CONFIG Set: IDLE Query: ALL Resetting to default values Syntax: CALCulate:LIMit:POWer[:TEMPlate]:CLEar Option: none No Query...
Page 226 List of Commands/Annex C CTS55 Tolerances for power time template The level designations used in the power time template for the command CALCulate:LIMit:POWer[:TEMPlate][:DATA] can be obtained from the following illustration: CALCulate:LIMit:POWer[:TEMPlate][:DATA] Syntax: <numeric_value>, <numeric_value>, <numeric_value>, <numeric_value>, <numeric_value>, <numeric_value>, <numeric_value>, <numeric_value>, <numeric_value> Value range: Default: -100.0 ...
Page 227 CTS55 List of Commands/Annex C Query for observance of the tolerances of the power/time template CALCulate:LIMit:POWer[:TEMPlate]:MATChing? Syntax: Return: MATC in Tolerance NMAT out of Tolerance no measurement result available NRAM | no ramping NTSC no valid TSC found Out of dynamic range TEAR falling edge of ramp too early THIG...
Page 228 List of Commands/Annex C CTS55 1.5.2.2 Power Measurement Average power of the burst Syntax: READ[:SCALar]:BURSt:POWer:AVERage? Execute new measurement and signal result FETCh[:SCALar]:BURSt:POWer:AVERage? Read result only <value> (unit: dBm) Return: State: MCE, RFG, Option: none Query only Note: No default values, (N5), (N7) Power values of the burst Syntax: Execute new...
Page 229 CTS55 List of Commands/Annex C Sensitive Power Measurement Offset CONFigure:MODuletest:SPM:OFFSet[?] Syntax: Value range: Default: 2 dB 10 dB +10 dB State: Option: Note: This value can also be adjusted automatically by the SPM calibration routine. Calibration Routine Start Syntax: PROCedure:CALibrate:SPM? "CALIBRATION_OK", Value range: Default:...
Page 230 List of Commands/Annex C CTS55 1.5.3 Phase and Frequency Errors 1.5.3.1 Tolerances for Phase and Frequency Errors Resetting to default values Syntax: CALCulate:LIMit:PHFR:CLEar Option: none No Query State: ALL Note: Sets the GSM, DCS1800 or DCS1900 tolerances Tolerances for phase and frequency error Syntax: CALCulate:LIMit:PHFR:TOLerance[:DATA] <numeric_value>, <numeric_value>, <numeric_value>...
Page 231 CTS55 List of Commands/Annex C 1.5.3.2 Test Parameters for Phase and Frequency Error Measurements Number of bursts for average- and maximum-value measurements CALCulate:LIMit:PHFR:AVERage Syntax: Value range: 1 ... 999 Default: Option: none With Query State: ALL 1.5.3.3 Phase Error Measurement Total phase error of a burst Syntax: RMS:...
Page 232 List of Commands/Annex C CTS55 1.5.3.4 Frequency Error Measurement Total frequency error of a burst Syntax: Execute new READ[:SCALar]:BURSt:FREQuency:ERRor? measurement and signal result FETCh[:SCALar]:BURSt:FREQuency:ERRor? Read result only Return: <value> (current, unit: Hz) <value> (average, unit: Hz) <value> (maximum, unit: Hz) State: MCE, RFG, Option: none Query only Note: No default values, (N5), (N7)
Page 233 CTS55 List of Commands/Annex C 1.5.5 IQ Spectrum Measurement 1.5.5.1 Settings for IQ Spectrum Measurement Channel number (ARFCN) and Frequency Syntax: CONFigure:CHANnel:IQSPectrum:ARFCn <numeric_value> GSM: -74 ... 449 Value range: Default: GSM: GSM850: 128 ... 251 GSM850: DCS1800: 462 ... 1510 DCS1800: 711 DCS1900: -238 ...
Page 234 List of Commands/Annex C CTS55 1.5.5.2 Measurements Spectrum measurement Syntax: Execute new READ:ARRay:IQSPectrum? measurement and signal result Read result only FETCh:ARRay:IQSPectrum? <value> {, <value>} (unit: dB; maximum 300 values, -150 kHz -> +150 kHz) Return: State: IQSP Option: B7 Query only Note: No default value Measurement of reference power Syntax:...
Page 235 CTS55 List of Commands/Annex C GPRS Signalling State SENSe:GPRS:SIGNalling:STATe? Syntax: Value range: ATTACHED, Default: NOT ATTACHED State: MSYN Option: K4 Only query Note: Configure Uplink State Flag (USF) Syntax: CONFigure:SIGNalling:IDENtity:USF? Value range: 0 - 7 Default:0 With query State: IDLE,MSYN Option: K4 Note: Configure Routing Area Code (RAC)
Page 236 List of Commands/Annex C CTS55 Configure number of blocks for the BLER measurement CONFigure:GPRS:BLER:BLOCkstosend[?] Syntax: 10 - 9999 Value range: Default: 1000 State: IDLE,MSYN Option: K4 With query Note: GPRS BLER measurement on/off Syntax: CONFigure:GPRS:BLER:State[?] Value range: ON,OFF Default: State: MSYN Option: K4 With query...
Page 237 CTS55 List of Commands/Annex C Miscellaneous 1.6.1 Internal Instrument State Current instrument state Syntax: STATus:DEVice? IDLE Idle (initial state) Return: Default: IDLE MIDL MS test: Idle MSYN MS test: Synched MS test: Call established Module test Idle IQSP IQ-spectrum Burst Analysis RF generator State: ALL Option: none Query only...
Page 238 List of Commands/Annex C CTS55 Query for Mobile Stations Enhanced Full Rate capabilities CALCulate:MOBILE:EFRC:STATus? Syntax: Return: NSUP Not Supported SUPP Supported State: MCE Option: none Query only Default: NSUP Query for Mobile Stations Half Rate capabilities CALCulate:MOBILE:HRC:STATus? Syntax: Return: NSUP Not Supported SUPP Supported...
Page 239 CTS55 List of Commands/Annex C MS RGSM status CALCulate:MOBIle:RGSM:STATus? Syntax: Value range: NSUP – not supported Default: SUPP – supported Only query State: MSYN Option: none Note: 1.6.3 Write to Hard Disk Write Settings to Hard Disk Syntax: PROCedure:SET:WRIte:HD? All changes are saved to hard disk Return: No new changes are saved to hard disk State: ALL...
Page 240 List of Commands/Annex C CTS55 Specified Commands 1.7.1 Mandatory Commands Clear Status Syntax: *CLS Option: none No Query State: ALL Standard Event Status Enable *ESE <numeric_value> Syntax: Value range: 0 ... 255 Default: 0 State: ALL Option: none With Query Note: MAXimum and MINimum impermissible Standard Event Status Register Syntax: *ESR?
Page 241 CTS55 List of Commands/Annex C Operation Complete *OPC Syntax: Return: (return only in the case of query) Option: none With Query Note: Also influences the OPC bit in the event status register State: ALL Parallel Poll Enable Register Enable *PRE <numeric_value> Syntax: Value range: 0 ...
Page 242 List of Commands/Annex C CTS55 Status Byte Query *STB? Syntax: Return: 0 ... 255 Option: none Query only State: ALL Wait-to-Continue *WAI Syntax: State: ALL Option: none No Query 1094.0006.55 C.38...
Page 243 CTS55 List of Commands/Annex C Remarks 1.8.1 (N1) -) The transmitter power is adapted, if necessary (see also (N3)). -) The input may be overdriven if an external amplifier is connected. -) The settings have only influence on the <default mobile>. It should be selected previously. 1.8.2 (N2) During signalling, RXLEV, RXQUAL and POWER LEVEL are automatically polled by the mobile at...
Page 244 List of Commands/Annex C CTS55 Index *CLS ......................................36 *ESE <numeric_value> ................................36 *ESR? ......................................36 *IDN? ......................................36 *IST?......................................36 *OPC......................................37 *PRE <numeric_value> ................................37 *PSC <numeric_value> ................................37 *SRE <numeric_value> ................................37 *STB? ......................................38 *WAI......................................38 CALCulate:BER:CLIB:MSAMples?...............................19 CALCulate:BER:CLII:MSAMples? ..............................19 CALCulate:BER:EFRames:MSAMples?............................19 CALCulate:BER:TEST:TIME? ..............................19 CALCulate:LIMit:BER:CLIB:MEVents?............................19 CALCulate:LIMit:BER:CLII:MEVents? ............................19 CALCulate:LIMit:BER:EFRames:MEVents?..........................19 CALCulate:LIMit:PHFR:AVERage ..............................27 CALCulate:LIMit:PHFR:CLEar ..............................26 CALCulate:LIMit:PHFR:TOLerance:MATChing:AVERage?......................26 CALCulate:LIMit:PHFR:TOLerance:MATChing:MAXimum? ......................26...
Page 245 List of Commands/Annex C CTS55 CONFigure:SIGNalling:IDENtity:LAC <numeric_value> .......................10 CONFigure:SIGNalling:IDENtity:MCC <numeric_value> ........................9 CONFigure:SIGNalling:IDENtity:MNC <numeric_value> ........................9 CONFigure:SIGNalling:IDENtity:NCC <numeric_value>.........................9 FETCh:ARRay:BURSt:PHASe:ERRor?............................27 FETCh:ARRay:BURSt:POWer? ..............................24 FETCh:ARRay:IQSPectrum? ...............................30 FETCh[:SCALar]:BER:CLIB:RBER? ............................20 FETCh[:SCALar]:BER:CLIB[:BER]? .............................20 FETCh[:SCALar]:BER:CLII:RBER?..............................20 FETCh[:SCALar]:BER:CLII[:BER]? ..............................20 FETCh[:SCALar]:BER:EFRames[:FER]? .............................20 FETCh[:SCALar]:BURSt:FREQuency:ERRor?..........................28 FETCh[:SCALar]:BURSt:PHASe:ERRor:PEAK? ..........................27 FETCh[:SCALar]:BURSt:PHASe:ERRor:RMS?..........................27 FETCh[:SCALar]:BURSt:POWer:AVERage? ..........................24 FETCh[:SCALar]:BURSt:TIMing:ERRor? .............................28 FETCh[:SCALar]:IQSPectrum:POWer[:REFerence]?........................30 PROCedure:CALL:TOMS................................14 PROCedure:RELease:TOMS ...............................14 PROCedure:SELect[:TEST] <string>...
Page 247 CTS55 MS Power Charts/Annex D MS Power Charts Mobile Power Classes GSM 850 GSM 900 DCS 1800 PCS 1900 Power Max. Peak Max. Peak Max. Peak Max. Peak Class Power (W) Power (W) Power (W) Power (W) 0.25 0.25 Mobile Power Control Levels Peak Power (dBm) Power Control Level GSM 850...
Page 248 MS Power Charts/Annex D CTS55 Rx_LEV Values The reported Rx_LEV values for received signal level are as follows: Rx_LEV Received Signal Level Rx_LEV Received Signal Level Less than -110 dBm -78 dBm to -77 dBm -110 dBm to -109 dBm -77 dBm to -76 dBm -109 dBm to -108 dBm -76 dBm to -75 dBm...
Page 249 CTS55 MS Power Charts/Annex D Rx_QUAL Values The reported Rx_QUAL values for received signal level are as follows: Rx_QUAL Value Bit Error Rate Range Mean Value < 0.2 % 0.14 % 0.2 to 0.4 % 0.28 % 0.4 to 0.8 % 0.57 % 0.8 to 1.6 % 1.13 %...
Page 251 CTS55 Index Config-Quicktest Menu .............9.13 Index Continuous test mode ............3.6 Control channel..............3.6 Country specific keyboard..........9.42 Coupler ................4.3 Description of Commands..........11.11 AC supply connector ............2.2 Description of the Menus ............9.1 Antenna Coupler ..............8.1 Description of the Status Registers.........11.20 AR..................7.5 Device Messages .............11.2 Auto Ranging ..............
Page 252 Index CTS55 List of Commands ............Annex C Quality of the received signal (RxQual)......3.11 Location update..............3.7 Quicktest ..............1.1, 5.1 Location Update ........... 4.6, 5.1, 5.4 Quicktest - Result Menu............9.15 Logo screen ............... 9.1 Quicktest - Test Menu............9.14 Loop Back ................ 3.13 Quicktest Main Menu ..........5.4, 9.12 Main Menu of the Autotest ..........
Page 253 CTS55 Index Viewing angle..............2.3 Voltage selector ..............2.3 Voltage selector switch ............2.2 1094.0006.55...
Page 255 Test and Measurement Division ® Windows Application CTSgo CTS-K6 (Version 1.81) 1079.2001.01 Printed in the Federal Republic of Germany 1079.2001.01 (Edition 3)
Page 257: Contents
® CTS-K6 Windows Application CTSgo 1 Contents 1 Contents ............................1 2 Introduction ............................. 7 First Steps with CTSgo ......................7 Basic Knowledge Required ..................... 7 Preconditions for System Use ....................7 Suitable Serial Cables ......................8 2.4.1 Cable for Xon/Xoff Protocol....................8 2.4.2 Cable for Hardware Protocol RTS/CTS ................
Page 258 ® Windows Application CTSgo CTS-K6 6 Getting Familiar with CTSgo ....................16 Explanation of Terms ......................16 6.1.1 Title Bar .......................... 16 6.1.2 Menu Bar ........................16 6.1.3 Pulldown Menu ....................... 16 6.1.4 Popup Menu ........................17 6.1.5 Toolbar ........................... 17 6.1.6 Status Bar........................
Page 259 ® CTS-K6 Windows Application CTSgo Measurement Menus......................42 7.2.1 Report Settings....................... 42 7.2.2 Start..........................44 7.2.3 Stop ..........................44 7.2.4 Pause ..........................44 7.2.5 Step ..........................44 7.2.6 Freeze ..........................44 7.2.7 Continue ......................... 44 Configuration Menu in the GSM Autotest ................45 7.3.1 Network ..........................
Page 260 ® Windows Application CTSgo CTS-K6 Configuration Menu in the DECT Autotest ................65 7.5.1 PP Base Settings ......................65 7.5.2 FP Base Settings......................66 7.5.3 Select Tests........................68 7.5.4 FP Test Set 1 ......................... 69 7.5.5 FP Test Set 2 ......................... 70 7.5.6 FP Test Set 3 .........................
Page 261 ® CTS-K6 Windows Application CTSgo 8 GSM Measurement Report ...................... 89 Header of Measurement Report .................... 89 Output of Measurement Information in the Report ............. 90 Summary of Results in the Measurement Report ............... 91 Appendix to Measurement Report ..................91 9 DECT Measurement Report ....................
Page 262 ® Windows Application CTSgo CTS-K6 16Problems, Questions and Solutions ................109 16.1 Components Missing Signaled upon Program Startup............ 109 16.2 Serial Interface Cannot be Opened..................109 16.3 CTS Cannot be Remote-Controlled ..................109 16.4 Program Signals Timeout ....................109 16.5 Serial Data Transmission Impaired by Mouse Movements..........109 16.6 Location Update Cannot be Performed................
Page 263: Introduction
Mouse, one free serial interface CTS30, CTS50, CTS55 or CTS65 is also required. To be able to make full use of all the program capabilities, software version 2.00 or higher should be installed on the CTS. The autotest can be performed as of software version 1.25 of the CTS.
Page 264: Suitable Serial Cables
® Windows Application CTSgo CTS-K6 2.4 Suitable Serial Cables The CTSgo program and the CTS allow for various settings of data transmission. Depending on the handshake method used, different conditions have to be met by the cable. Handshake means that the devices inform each other whether they are ready to receive data.
Page 265: Installation
® CTS-K6 Windows Application CTSgo 3 Installation This section describes the installation of CTSgo. The appearance of Windows is slightly different on your PC because of the various possible configurations, but the program contents and function of control elements are identical. 3.1 Preparation Take the set of floppies for the CTSgo variant to be installed.
Page 266: Step 5
® Windows Application CTSgo CTS-K6 3.2.5 Step 5 Enter your name and the name of your company in the dialog fields. After the entry continue with “Next”. Return to the last step is possible at any time by pressing “Back”. Fig.: Dialog of installation step 5 3.2.6 Step 6 The installation software now...
Page 267: Step 7
® CTS-K6 Windows Application CTSgo 3.2.7 Step 7 Select the folder into which the program icon is to be placed. You may create a new folder or put the icon into an already existing folder. Fig.: Dialog of installation step 7 3.2.8 Step 8 The installation software now displays all the settings made...
Page 268: Step 9
® Windows Application CTSgo CTS-K6 3.2.9 Step 9 The installation software now starts to copy the software components. If desired, the installation procedure can be terminated before completion with “Cancel”. A progress bar informs you on the current installation state. Fig.: Dialog of installation step 9 3.2.10 Step 10 During the installation the...
Page 269: 11Step 11
® CTS-K6 Windows Application CTSgo 3.2.11 Step 11 The installation was success- fully completed. With installation terminated, program can be called up. Fig.: Dialog of installation step 11 1079.2001.01...
Page 270: Software Components
® Windows Application CTSgo CTS-K6 4 Software Components The installation program installs the following components. To simplify deinstallation of the program, the components should preferably not be copied into the Windows directory. If further applications are to be used and copied to the Windows system directory by the runtime libraries below, these libraries may be cleared from the installation directory.
Page 271: Deinstallation Of Program Ctsgo
® CTS-K6 Windows Application CTSgo 5 Deinstallation of Program CTSgo Deinstallation is basically automatic on all platforms. The automatic deinstallation clears all files that have been stored in the controller during the installation. Other files like configuration files or measurement reports are not cleared. If required, these files must be manually removed. 5.1 Deinstallation under Windows 95/Windows 98 / Windows NT 4.0 To deinstall CTSgo go to the Windows system control level and click on “Software”.
Page 272: Getting Familiar With Ctsgo
® Windows Application CTSgo CTS-K6 6 Getting Familiar with CTSgo 6.1 Explanation of Terms If you are familiar with other Windows programs, associated terms and concepts will be known to you. However, to simplify your working with this manual and for the sake of clarity we recommend to briefly read through the terms used in the manual.
Page 273: Popup Menu
® CTS-K6 Windows Application CTSgo 6.1.4 Popup Menu This menu contains commands and is displayed in the main menu at the position of the mouse cursor when the righthand mouse key is pressed. Move the cursor through the commands and release the righthand mouse key on the desired command.
Page 274: Buttons
® Windows Application CTSgo CTS-K6 6.1.8 Buttons Buttons are part of dialog windows. Click on a button with the left mouse key to execute the desired function. 6.1.9 Option Boxes Option boxes permit to select one of several different options. The selected option is filled in by a point. 6.1.10 Check Boxes With these boxes an option can be activated or deactivated.
Page 275: 12Information Boxes
® CTS-K6 Windows Application CTSgo 6.1.12 Information Boxes Some dialog windows contain a user info box where information in plain text or graphics on the program status or on selection or setting results is displayed. 6.1.13 Output Boxes Output boxes look like info boxes, but they cannot be activated. 6.1.14 Progress Bars Progress bars indicate the current status of an action.
Page 276: Ctsgo Program Structure
® Windows Application CTSgo CTS-K6 6.2 CTSgo Program Structure CTSgo uses five main operating modes: • GSM autotest dialog. The GSM autotest can be started in this mode for generating new measurement reports. • GSM module test dialog. This is an interactive mode where generator settings can be made on the CTS, a GSM burst analysis performed and the IQ spectrum viewed.
Page 277: Gsm Autotest Dialog
® CTS-K6 Windows Application CTSgo 6.3 GSM Autotest Dialog After the first start, the CTSgo program is in the GSM autotest mode. The sequence control of the autotest is in the stop mode at this point in time. If you wish to change settings for the autotest, you should do it now.
Page 278 ® Windows Application CTSgo CTS-K6 The following elements are displayed to the right of the time of the day: Status indication of program sequence. The status check in the sequence control is made periodically. With each performed cycle the icon is rotated by 90°. Events on the serial interface also cause the icon to move.
Page 279 ® CTS-K6 Windows Application CTSgo You are requested to set up a call. The righthand key on the mobile shown in green flashes. 1079.2001.01...
Page 280: Sequence Control Of Autotest
® Windows Application CTSgo CTS-K6 6.3.1 Sequence Control of Autotest With the CTSgo program, the autotest mode is called. The sequence control is in the stop mode so that you can perform the configurations that are still needed. In this mode, you may choose between the following possibilities: The program is in the single-step...
Page 281: Structure Of Gsm Autotest
® CTS-K6 Windows Application CTSgo 6.3.2 Structure of GSM Autotest CTS basic configuration Preparation of test (1 run) Waiting for location update Query of mobile specification (IMSI/IMEI/power class/phase) Call setup Change of channel/PCL Setting CTS output level Power/phase/frequency error measurements Power reduction to BER level Determination of BER, query of RXLev / RXQual Preparation of test (further test runs)
Page 282: Gsm Module Test Dialog
® Windows Application CTSgo CTS-K6 6.4 GSM Module Test Dialog The GSM module test comprises three functions: operation of the CTS as generator, burst analysis using the CTS and IQ spectrum display. The module test and thus data transmission between CTS and CTSgo start in generator mode.
Page 283 ® CTS-K6 Windows Application CTSgo The RF generator dialog can also be terminated with Cancel. In this case, the generator settings are not changed. If required, the channel and the frequency offset can be converted to a frequency with the aid of this dialog. For further information refer to the dialog description. Like in the autotest, the user can load parameters or store the current setting with the aid of a popup menu.
Page 284 ® Windows Application CTSgo CTS-K6 Frequency error Measurement range Lower limit Bar center Upper limit Default -250 Hz 0 Hz +250 Hz Minimum -125 Hz 0 Hz +125 Hz Maximum -500 Hz 0 Hz +500 Hz Phase error (Peak) Measurement range Lower limit Bar center Upper limit...
Page 285 ® CTS-K6 Windows Application CTSgo The graphics display next to the display of the average power informs the user on whether the measured values are within the GSM tolerance mask. Measured values within tolerance mask. Measured values outside tolerance mask. Tolerance mask not evaluated.
Page 286 ® Windows Application CTSgo CTS-K6 The Phase error button displays popup window with the display of the phase curve versus the bit position within the ramp. The CTS also measures the phase with fourfold oversampling. Fig.: Popup menu in GSM module test dialog By pressing the spectrum button, you select...
Page 287: Sequence Control Of Module Test
® CTS-K6 Windows Application CTSgo Three markers (M1 to M3) are displayed at the points that are typical for this measurement; in addition to the absolute level, the differences from the marker with the highest level are also displayed below. The level scale is relative to the reference level of the tester, the reference level itself is indicated at the top left of the window.
Page 288: Structure Of Module Test
® Windows Application CTSgo CTS-K6 6.4.2 Structure of Module Test CTS basic configuration Setting of network and attenuation Setting of operating mode RF generator RF burst analysis IQ spectrum Setting of RF Setting of IQ Setting of RF generator spectrum analyzer parameter parameter set parameter set...
Page 289: Gsm Report Display
® CTS-K6 Windows Application CTSgo 6.5 GSM Report Display Fig.: GSM report display In the GSM report display mode, GSM measurement results are displayed like on a hardcopy. However, contrary to the print preview, paging is not shown. Depending on the length of the measurement report and the resolution of your graphics card, the displayed section may have to be moved through the report display with the aid of the horizontal and vertical scrollbars.
Page 290: Dect Autotest Dialog
® Windows Application CTSgo CTS-K6 6.6 DECT Autotest Dialog The autotest dialog in DECT mode does not considerably differ from the one in GSM mode. Depending on the operating mode previously used, the operating mode GSM autotest or DECT autotest will be active with the next program start of CTSgo.
Page 291: Structure Of Dect Auto Test
® CTS-K6 Windows Application CTSgo 6.6.1 Structure of DECT Auto Test CTS basic configuration Preparation of tests PP / FP configuration part 1 Query of RFPI of FP / Setting RFPI in the tester FP or PP configuration part 2 (Carrier,Slot,Offset) Call setup in LOOP mode Power measurement graphics/scalar, checking the template Modulation measurement graphics/scalar, measuring drift, jitter...
Page 292: Dect Report Display
® Windows Application CTSgo CTS-K6 6.7 DECT Report Display The DECT report display mode indicates the DECT measurement results. The DECT report display corresponds to the GSM report display concerning the popup menu and the other characteristics. Fig.: DECT report display mode Note: Depending on whether GSM report or DECT report is loaded, CTSgo will change the type of display accordingly.
Page 293: Program Menus
® CTS-K6 Windows Application CTSgo 7 Program Menus This section describes the commands available in the CTSgo menus. If a command can also be called via the toolbar, its icon is displayed below the headline. A command can also be called via a popup menu when the following line is displayed below the headline.
Page 294: Save
® Windows Application CTSgo CTS-K6 7.1.3 Save Popup menu Report display This command can be used to store a measurement report. A dialog window is opened where the directory can be selected and the report stored under the desired name. 7.1.4 Save As Popup menu Report display This command is similar to the Save command.
Page 295: Print Preview
® CTS-K6 Windows Application CTSgo 7.1.5 Print Preview This command is used to open the print preview dialog window in the report display. In this window, the measurement report is displayed in hardcopy format. Use the arrow keys to scroll between the pages. Icons are provided for switchover between single-page and double-page display.
Page 296: Export Data
® Windows Application CTSgo CTS-K6 7.1.8 Export Data The user may want to work with a measurement report in another Windows application. To do so, select this command to open a dialog window where the desired directory can be selected and the file assigned a new name.
Page 297: 11Save Configuration
® CTS-K6 Windows Application CTSgo 7.1.11 Save Configuration Popup menu Autotest Popup menu Module test This command saves the set configuration. A dialog window is opened where the directory can be selected and the configuration stored under the desired file name. Configuration files are assigned the extension .CFG.
Page 298: Measurement Menus
® Windows Application CTSgo CTS-K6 7.2 Measurement Menus Fig.: Measurements menu in the GSM autotest, DECT autotest Fig.: Measurements menu in the GSM module test 7.2.1 Report Settings This command opens the following dialog window: Fig.: Report settings dialog window Enter the operator name in the first input field.
Page 299 ® CTS-K6 Windows Application CTSgo • Automatic generation of a measurement report. After the measurement, the program remains in the autotest dialog mode. “All tests passed – Some tests failed.” is displayed. A measurement report is saved in a user-selected directory. Measurement reports are stored with consecutive numbers „00000001.MRP“...
Page 300: Start
® Windows Application CTSgo CTS-K6 Example: The measurement report is stored in computer A: Current directory: C:\CTSGO\ Picture file: C:\BITMAPS\USER.BMP To display the measurement report on computer B: Current directory: C:\MYWORKS\CTSGO\ Picture file: C:\BITMAPS\USER.BMP These settings concern both the GSM and the DECT autotest. 7.2.2 Start The Start command is used to start a new measurement.
Page 301: Configuration Menu In The Gsm Autotest
® CTS-K6 Windows Application CTSgo 7.3 Configuration Menu in the GSM Autotest Fig.: Configuration menu in the GSM Autotest 1079.2001.01...
Page 302: Network
® Windows Application CTSgo CTS-K6 7.3.1 Network This command opens the Configure Network dialog window. In this window, the measurements can be adapted to the network of your mobile. The base station power at which the mobile performs a location update is also set here.
Page 303: Test Parameters
® CTS-K6 Windows Application CTSgo Note: The choice of networks depends on the options available in your CTS! It is advisable to configure the network first and then make test configurations. 7.3.2 Test Parameters The Test Parameters command opens the dialog window shown below. This window permits to set the BCCH of the base station, the path attenuation between mobile and CTS, the number of frames used for the bit-error-rate measurement and the number of bursts for the phase and frequency-error measurement.
Page 304: Select Tests
® Windows Application CTSgo CTS-K6 More reliable results are obtained by increasing the frames and thus the number of bits, but this extends the measurement time. Note: The measurement time for the phase/frequency error measurement also depends on the number of bursts to be considered.
Page 305: First Connect
® CTS-K6 Windows Application CTSgo 7.3.4 First Connect Fig.: Configure first Connect dialog window This command permits to define the method for the first call setup. To this end, select whether the CTSgo program expects a call from the mobile or whether the call should be set up by the CTS. In the case of a mobile call, you can define an expected numerical entry, which will then be compared with the call number received and evaluated in the test report.
Page 306 ® Windows Application CTSgo CTS-K6 Fig.: Configure Test Set dialog window The standard BS output power is used for the following measurements: • Frequency error • Phase error (RMS and peak value are determined numerically) • Phase error (phase error curve within burst) •...
Page 307: Test Set 2
® CTS-K6 Windows Application CTSgo 7.3.6 Test Set 2 You can determine the measurements to be performed in the selected TCH channels. For details refer to the description under Test set 1. Note: This command can only be selected if Test set 2 is activated for the test. 7.3.7 Test Set 3 You can determine the measurements to be performed in the selected TCH channels.
Page 308: 11First Disconnect
® Windows Application CTSgo CTS-K6 7.3.11 First Disconnect Using this command you can determine the procedure for the first call clear-down. Select by a click on the respective box whether a call release is expected from the mobile or whether the call should be cleared down by the CTS.
Page 309: 15Test Set 9
® CTS-K6 Windows Application CTSgo 7.3.15 Test Set 9 You can determine the measurements to be performed in the selected TCH channel. For details refer to the description under Test set 1. Note: This command can only be selected if test set 9 is activated for the test. 7.3.16 Test Set 10 You can determine the measurements to be performed in the selected TCH channel.
Page 310: 20Remote Port
® Windows Application CTSgo CTS-K6 7.3.20 Remote Port To ensure error-free functioning of the CTSgo software, the settings made for the remote control interface (RS232) should match the settings on the CTS. The parameters of the serial interface such as baud rate, data bits used, stop bits, parity used and the protocol can be selected on the CTS.
Page 311: 21Change Password
® CTS-K6 Windows Application CTSgo 7.3.21 Change Password Your configuration can be protected against unauthorized changes. To this end, enter a password in the first field and repeat it in the next. The password function is activated by selecting the “Activate” box.
Page 312: Configuration Menu In The Gsm Module Test
® Windows Application CTSgo CTS-K6 7.4 Configuration Menu in the GSM Module Test 7.4.1 Attenuation Fig.: Configure Test Parameters dialog window In the module test, this dialog permits to standardize the attenuation values of the parameter sets in generator, burst analysis and IQ spectrum mode. After entering the input attenuation and output attenuation, close the dialog window by clicking on OK.
Page 313 ® CTS-K6 Windows Application CTSgo Fig.: RF Generator Settings dialog window Whether the channel or the frequency is entered is selected with the Channel Input box. If frequency is entered, it is adapted to the channel and frequency offset. The entered channel or the conversion to the respective frequency also depends on the currently active network.
Page 314 ® Windows Application CTSgo CTS-K6 Channel (GSM900) Frequency -175 875.0 MHz -174 875.2 MHz 935.0 MHz... 935.2 MHz 935.4 MHz 959.6 MHz 959.8 MHz 994.8 MHz GSM 900 channel 995.0 MHz Fictitious channel Channel (GSM1800) Frequency 1800.0 MHz 1800.2 MHz 1805.2 MHz...
Page 315: Burst Analysis Settings
® CTS-K6 Windows Application CTSgo 7.4.3 Burst Analysis Settings The Configurations menu includes the Burst Analysis Settings submenu, where the menu items “RF Analyzer 1” to “RF Analyzer 10” can be found. Select one of these commands for editing the respective burst analysis parameter set.
Page 316 ® Windows Application CTSgo CTS-K6 The entered channel or the conversion to its frequency also depends on the currently active network. Channels and associated frequencies are listed in the tables below. Channels outside the currently used band are displayed on a dark background. Channel (GSM900) Frequency 875.0 MHz 875.2 MHz...
Page 317 ® CTS-K6 Windows Application CTSgo As a particular feature of the configuration dialog for burst analysis, you can force a certain display mode. When this configuration set is called later on, the popup windows of burst analysis will be opened or closed, certain measurements marked or some marking cleared. Select the desired display mode and make a mark the “Force Displaymode”...
Page 318: Iq Spectrum Settings
® Windows Application CTSgo CTS-K6 7.4.4 IQ Spectrum Settings The Configurations menu includes the submenu “IQ Spectrum Settings”. This submenu contains the menu items “IQ Spectrum 1” to “IQ Spectrum 10”. Select one of these commands to edit an IQ spectrum parameter set.
Page 319 ® CTS-K6 Windows Application CTSgo By activating the Channel Input box, you can change between channel input and frequency input. If the frequency is entered, it is adapted to the GSM channel spacing. The entered channel or the conversion to its frequency also depends on the currently active network. Channels and associated frequencies are listed in the tables below.
Page 320: Remote Port
® Windows Application CTSgo CTS-K6 The IQ spectrum parameter set can be assigned a short name in the Name field. This short name appears both in the submenu and in the labeling of the buttons of the module test dialog window. The associated network is determined for the parameter set by clicking on “GSM900“, “GSM1800“...
Page 321: Configuration Menu In The Dect Autotest
® CTS-K6 Windows Application CTSgo 7.5 Configuration Menu in the DECT Autotest Fig.: Configuration menu in the DECT autotest 7.5.1 PP Base Settings This command permits to call the “PP Base Settings“ dialog window. Use this dialog to adapt the test mode to the parameters of your portable part.
Page 322: Fp Base Settings
® Windows Application CTSgo CTS-K6 Fig.: PP Base settings dialog window Note: For information about how to switch the portable part to service mode contact your manufacturer. It is very difficult to determine the attenuation to be set for DECT devices empirically. On the one hand, fixed parts or portable parts have no antenna connectors, which is why antenna couplers must be used.
Page 323 ® CTS-K6 Windows Application CTSgo Fig.: FP Base settings dialog window The antenna to be used can be entered in the input field below. The input and output attenuation are entered in two further fields. Note: For information about how to switch the portable part to service mode contact your manufacturer. It is very difficult to determine the attenuation to be set for DECT devices empirically.
Page 324: Select Tests
® Windows Application CTSgo CTS-K6 7.5.3 Select Tests This command opens the dialog window below. The number of test sets for the fixed part test and the number of test sets for the portable part test are selected using the respective boxes. If you do not want to perform a fixed part test or a portable part test, clear the respective mark in the box.
Page 325: Fp Test Set 1
® CTS-K6 Windows Application CTSgo 7.5.4 FP Test Set 1 Within the test sets, you can determine the measurements to be performed for a traffic bearer. To this end, enter the carrier of the traffic bearer to be used in the first input field. You may as well enter the carrier offset.
Page 326: Fp Test Set 2
® Windows Application CTSgo CTS-K6 The following RX measurements are available: • BER (Bit Error Rate) • FER (Frame Error Rate) The RF output level of the CTS for these measurements is to be determined in the RF Level field of RX Measurements.
Page 327: Fp Test Set 5
® CTS-K6 Windows Application CTSgo 7.5.8 FP Test Set 5 You can determine the number of tests for the Traffic Bearer. For more details refer to the description of FP test set 1. Note: This command can only be called if FP test set 5 is activated for the test. 7.5.9 FP Test Set 6 You can determine the tests to be performed for the Traffic Bearer.
Page 328: 10Pp Test Set 1
® Windows Application CTSgo CTS-K6 7.5.10 PP Test Set 1 Within the test sets, you can determine the tests to be performed for a traffic bearer. To do so, enter the carrier of the traffic bearer to be used in the first input field. You can as well enter the carrier offset. In addition, you can define the used slot in the respective field.
Page 329: 11Pp Test Set 2
® CTS-K6 Windows Application CTSgo The following TX measurements are available: • NTP (Normal Transmit Power) • Power ramp (Template) • Graphics burst display in the appendix to the measurement report • Frequency offset • B-field modulation • Graphics display of modulation in the appendix to the measurement report •...
Page 330: 15Pp Test Set 6
® Windows Application CTSgo CTS-K6 7.5.15 PP Test Set 6 You can determine the tests to be performed for the specified TCH channel. For more details refer to the description of test set 1. Note: This command can only be called if PP test set 6 is activated for the tests. 7.5.16 Remote Port The same dialog window appears as for the GSM autotest, for more information refer to the respective chapter of the GSM autotest.
Page 331: Limits Menu In The Gsm Autotest
® CTS-K6 Windows Application CTSgo 7.6 Limits Menu in the GSM Autotest Fig.: Limits menu in the GSM autotest With the items in the Limits menu, the upper and lower limits for the results are set. The settings made here influence all subsequently generated measurement reports. Tolerances of already stored measurement reports will not be influenced by these settings.
Page 332: Average Power
® Windows Application CTSgo CTS-K6 Fig.: Extract from Phase / Frequency / Timing Error measurement report 7.6.2 Average Power You may specify your own tolerances for the average power measurement. According to GSM specifications, the limits depend on the power control level (PCL) used by the mobile for transmission to the base station (CTS).
Page 333 ® CTS-K6 Windows Application CTSgo The maximum output power of a mobile is specified by its power class (Mobile Power Class). This information is queried by the sequence control from the DUT and influences the choice of tolerance. Power class GSM 900 maximum output power 43 dBm (see note) 39 dBm...
Page 334: Ber Measurements
® Windows Application CTSgo CTS-K6 Power class GSM 1900 maximum output power 30 dBm 24 dBm 33 dBm Fig.: Limits Average Power dialog window GSM1800/GSM1900 Entered values are set by pressing OK. If the entered limit values should not be set, terminate the dialog with Cancel.
Page 335: Rxqual /Rxlev
® CTS-K6 Windows Application CTSgo Fig.: Limits BER dialog window Class II, the maximum permissible BER of which is to be specified in the first input field, contains unprotected bits. These bits normally transfer data that do not seriously impair transmission when the bits are lost.
Page 336 ® Windows Application CTSgo CTS-K6 Fig.: Limits RXQual / RXLev dialog window RXLev is the power received by the mobile and signaled to the base station as values from 0 to 63. RXLev value Signal strength (dBm) > -48 dBm -49 dBm to -48 dBm -50 dBm to -49 dBm -109 dBm to -108 dBm...
Page 337: Limits Menu In The Dect Autotest
® CTS-K6 Windows Application CTSgo 7.7 Limits Menu in the DECT Autotest Fig.: Limits menu in the DECT autotest With the items in the Limits menu, the upper and lower limits for the results are set. The settings made here influence all subsequently generated measurement reports. Tolerances of already stored measurement reports will not be influenced by these settings.
Page 338: Modulation
® Windows Application CTSgo CTS-K6 7.7.2 Modulation This dialog permits to define the tolerance limits for the B-field modulation, the frequency offset and the frequency drift. Entered values are set by pressing OK. If newly entered limit values should not be set, terminate the dialog with Cancel.
Page 339: Timing
® CTS-K6 Windows Application CTSgo 7.7.3 Timing This dialog permits to define the tolerance limits for the jitter and timing measurements. The entered values are set by pressing OK. If newly entered values should not be set, terminate the dialog with Cancel.
Page 340: Ber / Fer
® Windows Application CTSgo CTS-K6 7.7.4 BER / FER This dialog permits to define the upper limit for the bit error rate (BER) and frame error rate (FER) measurements. Note that the entry is made in parts per million (ppm). The entered values are set by pressing OK.
Page 341: Window Menu
® CTS-K6 Windows Application CTSgo 7.8 Window Menu Fig.: Window menu The Windows menu is only active in the report display mode. In this window, the display can be adapted to your requirements. The current size of the display is indicated in the status bar. 7.8.1 Zoom 200% Popup menu Report display This command expands the result display to 200% of the standard size.
Page 342: Zoom 75
® Windows Application CTSgo CTS-K6 7.8.5 Zoom 75% Popup menu Report display This command reduces the result display to 75% of the standard size. 7.8.6 Zoom 66% Popup menu Report display This command reduces the result display to 66% of the standard size. 7.8.7 Zoom 50% Popup menu Report display This command reduces the result display to 50% of the standard size.
Page 343 ® CTS-K6 Windows Application CTSgo Fig.: CTSgo help window 1079.2001.01...
Page 344: Using The Online Help
® Windows Application CTSgo CTS-K6 7.9.2 Using the Online Help This command calls the online help of the employed operating system. The help is platform-specific and depends on the installation of the operating system. It also includes instructions on the use of the help files.
Page 345: Gsm Measurement Report
® CTS-K6 Windows Application CTSgo 8 GSM Measurement Report The measurement reports generated by the autotest provide a clear overview of measurement results. This section describes the layout of the measurement reports. 8.1 Header of Measurement Report The header of the measurement report contains all static settings of the measurement, eg set input and output attenuation, CTS output power during location update and the selected BCCH channel.
Page 346: Output Of Measurement Information In The Report
® Windows Application CTSgo CTS-K6 8.2 Output of Measurement Information in the Report When a call is set up by the mobile, the call number is entered in the measurement report. You can implement a simple keyboard test. Fig.: Display of call number The information on the individual measurements is indicated in five columns.
Page 347: Summary Of Results In The Measurement Report
® CTS-K6 Windows Application CTSgo 8.3 Summary of Results in the Measurement Report A summary of test results is given on the last page of each measurement report together with the number of passed or failed tests. The total measurement time including the waiting times for operator actions is also specified.
Page 348 ® Windows Application CTSgo CTS-K6 Fig.: GSM Power Time Template The limit lines used by CTSgo in the display of the power time template can be obtained from the following tables. According to GSM specifications, the reference point (0.0 µs) is positioned in the middle of the bit length of bit 0.
Page 349 ® CTS-K6 Windows Application CTSgo Point relative absolute Point relative absolute -59.0 dB -36.0 dBm -59.0 dB -36.0 dBm -30.0 dB -17.0 dBm -30.0 dB -17.0 dBm -6.0 dB -4.0 dB 4.0 dB 4.0 dB 1.0 dB 1.0 dB -1.0 dB -1.0 dB -6.0 dB -4.0 dB...
Page 350 ® Windows Application CTSgo CTS-K6 The second graphics of the measurement report shows the phase error for each quarter bit in the useful part of Fig.: Appendix to measurement report: phase curve the GSM burst. Depending on the upper limit of the phase error selected in the CTSgo configuration, a red tolerance line is drawn in at this point.
Page 351: Dect Measurement Report
® CTS-K6 Windows Application CTSgo 9 DECT Measurement Report The measurement reports generated by the autotest provide a clear overview of measurement results. This section describes the layout of measurement reports. 9.1 Header of Measurement Report The header of the measurement report contains all static settings of the measurement, eg set input and output attenuation, channel and slot of dummy carrier for the PP test and the selected RFPI (Radio Fixed Part Identity) for the fixed part and the portable part test.
Page 352: Summary Of Measurements In The Measurement Report
® Windows Application CTSgo CTS-K6 column four. This may happen when synchronization is lost during the measurement. Information on used slot), employed channel and the channel offset or the associated test set are indicated in the first column instead of the modified parameters. This additional information is written in italics. You can include a simple echo test in the measurement, the result of which is indicated below.
Page 353 ® CTS-K6 Windows Application CTSgo The graphics display of power ramp and modulation within the burst is appended to the measurement report. The curve display is shown in blue. The tolerance mask is recorded in red. Note: The tolerance mask is defined at various points A to F. DECT Power Time Template The limit lines used by CTSgo in the display of the DECT power time template can be obtained from the following table.
Page 354 ® Windows Application CTSgo CTS-K6 The second graphics display of the measurement report shows the modulation within the burst. The modulation used during the measurement is always Fig31. Recording starts at bit position -38. It can be clearly seen that still no burst is being received by the tester. Then follows the sync field including the preamble for time synchronization between FP and PP.
Page 355: 10Drag & Drop Support
® CTS-K6 Windows Application CTSgo 10 Drag & Drop Support The program supports the implemented drag & drop function of Windows in two ways. Drag & drop allows the user to move a selected file of a folder across the main window of an application with the left mouse key held down and to release the key when the desired position is attained.
Page 356: 11Exchanging Measurement Report Data
® Windows Application CTSgo CTS-K6 11 Exchanging Measurement Report Data Fig.: English and German report display CTSgo does not store country-specific information or texts in the measurement report files. If you have performed measurements with the English version of CTSgo and want to view the test results with the German version, window labeling as well as the information on date and time will be adapted to the desired language.
Page 357: 12Examples Of Application
® CTS-K6 Windows Application CTSgo 12 Examples of Application The procedure for configuring the autotest will be explained with the aid of two examples. Read through these examples if you are still not at ease with the operation of CTSgo. Before starting the examples, the following steps should be performed: •...
Page 358: Extended Gsm Test
® Windows Application CTSgo CTS-K6 12.2 Extended GSM Test In our second example, and extended test of a GSM900 mobile is to be performed. After a first call has been set up by CTS, all kind of GSM transmitter measurements are to be performed in channels 1, 62 and 124 at the PCLs 5, 10 and 15.
Page 359: Dect Test
® CTS-K6 Windows Application CTSgo • Open the File menu and select Save Configuration. Enter a name, eg ENDTEST.CFG in the Save Configuration dialog window and select the directory where the file should be stored. • Open the Measurement menu and click on Start. 12.3 DECT Test In our third example, a DECT set consisting of a fixed part and a portable part is to be measured.
Page 360: 13Working With Different User Profiles
® Windows Application CTSgo CTS-K6 13 Working with Different User Profiles CTSgo allows for two different user profiles, the configurator and the operator profile. The operator mainly focuses on loading configurations and then starting the test. In order to prevent surrounding base stations from disturbing the measurements, the operator can change the settings of the BCCH and TCH channels.
Page 361: 14Integrating Operator-Specific Hints
® CTS-K6 Windows Application CTSgo 14 Integrating Operator-specific Hints When it is called up for the first time, CTSgo generates further configuration files “CTS_GO.DS1“ “CTS_GO.DS2“ . The file “CTS_GO.DS1“ refers to autotest, “CTS_GO.DS2“ to the DECT autotest. These configuration files permit to integrate the output of additional information in the test run.
Page 362: The Section Everytime
® Windows Application CTSgo CTS-K6 14.1 The Section Everytime This section contains 9 entries. The individual entries are displayed shortly after the start of the autotest in the order Text1/Filename1, Text2/Filename2 and Text3/Filename3. If several graphics displays are to be shown one after the other, it is recommended to define the popup window for text as well, since otherwise the second graphics, for instance, would immediately overwrite the first one.
Page 363: The Section Monthly
® CTS-K6 Windows Application CTSgo 14.3 The Section Monthly This section contains 9 entries. The individual entries are displayed shortly after the start of the autotest in the order Text1/Filename1, Text2/Filename2 and Text3/Filename3. If several graphics displays are to be indicated one after the other, it is recommended to define the popup window for text as well, since otherwise the second graphics, for instance, would immediately overwrite the first one.
Page 364: 15Adapting The Appearance Of Ctsgo
® Windows Application CTSgo CTS-K6 15 Adapting the Appearance of CTSgo The user-defined graphics integration described before is also possible in a large display field of the main dialog instead of in a popup window. For this purpose, bit 15 must be set in the initialization file “CTS_GO.INI“...
Page 365: 16Problems, Questions And Solutions
® CTS-K6 Windows Application CTSgo 16 Problems, Questions and Solutions 16.1 Components Missing Signaled upon Program Startup In addition to executable EXE files, the program contains runtime libraries (“DLLs“) which are loaded upon program start. These runtime libraries are first searched for in the specified current directory of CTSgo and then, if required, in the Windows system directory.
Page 366: Location Update Cannot Be Performed
® Windows Application CTSgo CTS-K6 16.6 Location Update Cannot be Performed For a correct location update, the C0 carrier power received by the mobile must be sufficiently high. Increase the base-station power (CTS) for the location update in the Configure Network dialog. A test SIM card should be used in addition.
Page 367: Can Several Ctss Be Controlled From A Pc
® CTS-K6 Windows Application CTSgo 16.13 Can Several CTSs be Controlled from a PC ? Several CTSs can be controlled from a PC if a sufficient number of free serial interfaces is available. To avoid interactions of the individual interfaces, a separate interrupt has to be used by each interface. With CTSgo a selection can only be made between the serial interfaces COM1 to COM4.
Page 368 ® Windows Application CTSgo CTS-K6 [Selected Tests] Key= First Connect 0001 Test Set 1 0002 Test Set 2 0004 Test Set 3 0008 Test Set 4 0010 Test Set 5 0020 Test Set 6 0040 Second Connect 0080 Test Set 7 0100 Test Set 8 0200...
Page 369: Can Configuration Overwriting Be Avoided
® CTS-K6 Windows Application CTSgo [DECT Selected Tests] Key= FP Tests 0001 FP Test Set 1 0002 FP Test Set 2 0004 FP Test Set 3 0008 FP Test Set 4 0010 FP Test Set 5 0020 FP Test Set 6 0040 PP Tests 0080...
Page 370: 17Other Features
® Windows Application CTSgo CTS-K6 17 Other Features 17.1 Debugging CTSgo can prepare a protocol for all the data transferred via the serial interface. To activate this features, the command line for program call can be extended to “CTS_GO.EXE /SERPROT“. To this end, add “/SERPROT”...
Page 371: 18Index
® CTS-K6 Windows Application CTSgo 18 Index Carrier 72 Center frequency 82 —A— CFG 14 Channel 27, 59, 62, 90, 96 absolute 91 Channel entry 104 absolute path 43 Channel input 57, 59, 63 A-field 98 Channel offset 96 Animated 105 Channel spacing 59, 63 Animation 22 Check boxes 18...
Page 372 ® Windows Application CTSgo CTS-K6 Display mode 61 Green lamp 31 DLL 109 GSM 1800 46 double-page display 39 GSM 1900 46 Drag & Drop 33, 99, 110 GSM 900 46 GSM autotest 40 Dummy Bearer 65, 66 Dummy Carrier 95 GSM Autotest 21 Dynamic range 59, 62 GSM channel 57...
Page 373 ® CTS-K6 Windows Application CTSgo Passed 90, 95 —M— Password 55 MAC identity 66 Path 43 MAC level 65 Pause 44 Main dialog 108 PCL 47, 76, 90, 91 Main window 99 Peak 28, 50 Marker 31 Peak phase error 75 maximum output power 77 Peak power 28 Peripherals 7...
Page 374 ® Windows Application CTSgo CTS-K6 relative 91 —T— relative path 43 Tabulated form 40 Remote-control interface 54 Report display 33 Target directory 10 Residual bit error rate 79 TCH 47, 49 Template 70, 73 Resolution 7, 108 Result display 27 Terminator 54 Results 21 Test 24...

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