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Wavetek IS-136 MS Operating Instructions Manual

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IS-136 MS
and
IS-136 DB
Software Option 897 926/897 807
Operating Instructions
50_is136
Doc. Version: 9907-121-A for IS-136 MS
10
Doc. Version: 9611-110-A for IS-136 DB
Acterna Muenchen GmbH, Gutenbergstr. 2 – 4, D-85737 Ismaning
¤
+49 (89) 9 96 41-0
Fax: +49 (89) 9 96 41-160

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  • Page 1 IS-136 MS IS-136 DB Software Option 897 926/897 807 Operating Instructions 50_is136 Doc. Version: 9907-121-A for IS-136 MS Doc. Version: 9611-110-A for IS-136 DB Acterna Muenchen GmbH, Gutenbergstr. 2 – 4, D-85737 Ismaning ¤ +49 (89) 9 96 41-0 Fax: +49 (89) 9 96 41-160...

  • Page 3: Table Of Contents

    IS-136 MS Contents Introduction ....................10-5 General preparations ..................10-6 Loading system program ................10-7 Test Setup ....................10-8 General Test Preparations ..............10-9 Test Callup ....................10-12 How to Read the "Test Results" Table ..........10-13 Registration Call ..................10-16 Call from Mobile ..................
  • Page 4 IS-136 MS Mobile-Assisted Handoff (MAHO) ............. 10-43 Test with 2nd RF generator ................ 10-43 Test without 2nd RF generator ..............10-44 Background Signaling ................. 10-46 Application Notes .................. 10-48 Requirements for operation ................ 10-48 Control commands and transmission protocol ........... 10-48 Pinning of RS-232 interface................

  • Page 5: Introduction

    (graphic) Modulation spectrum (graphic) Time alignment Burst power (graphic) Standard analog measurements The IS-136 DB test program allows to select the down-banded channels addition- ally. All other features are the same as offered by the IS-136 MS test program. 10-5...

  • Page 6: General Preparations

    IS-136 MS Introduction General preparations Check that STABILOCK is fitted with IS-136-compatible hardware. In order to test IS-136 mobiles, the D-AMPS unit (236 044), the D-AMPS duplex unit (229 063), the DATA module (236 034) and the frequency extension FEX (248 295) have to be installed.

  • Page 7: Loading System Program

    50Ω (standard). Loading system program Depending on the capacity of the available memory cards, the IS-136 MS-TEST system program is supplied on one or more (n) cards. 1) Insert the first memory card (1 of n) in the slot on STABILOCK.

  • Page 8: Test Setup

    IS-136 MS Test Setup Test Setup Levels of < –110 dBm appear when testing (eg bit error rate BER), so the entire setup must be proof against EMI pickup and not radiate any either. The following measures are recommended for this purpose: •...

  • Page 9: General Test Preparations

    General Test Preparations IS-136 MS General Test Preparations The following entries in the basic IS-136 mask (Fig. 10. next page5) are neces- sary for correct setup of a call between the mobile and the test setup. These entries are thus a general requirement for performing all tests. Here they will be looked at separately, but in the individual test procedures they are simply mentioned.
  • Page 10 IS-136 MS General Test Preparations The following fields ❺ to ❼ (Fig. 10.5) are only of importance if the scroll variable To analog TC directs call setup to an analog traffic channel. ❻ Forward voice channel FVC. The permissible figures depend on the system (A/B) (see appendix, "Technical Data").
  • Page 11 General Test Preparations IS-136 MS The following fields ❶ to ❻ (Fig. 10.6) are only of importance if the scroll variable To digital TC directs call setup to a digital traffic channel. ❶ RF band. Select between 800 MHz and 1900 MHz.

  • Page 12: Test Callup

    IS-136 MS Test Callup Test Callup More than five tests can be called up from the basic IS-136 test mask, so the softkeys have three levels with different functions assigned to them. Use {ETC} reach the required level: -ETC- EXECUTE...

  • Page 13: How To Read The "Test Results" Table

    IEEE command for sampling re- Name of result field in test mask sults by controller or AUTORUN The IS-136 MS-TEST system program is also suitable for testing AMPS and E-AMPS mobiles. So the letters also indicate what tests are permissible on these mobiles: Test also permissible on AMPS/E-AMPS mobiles.
  • Page 14 IS-136 MS How to Read the "Test Results" Table 10-14...
  • Page 15 How to Read the "Test Results" Table IS-136 MS IS-136 Signaling Tests 10-15...

  • Page 16: Registration Call

    IS-136 MS Registration Call Registration Call WHY? Test whether the mobile sets up a registration answer to the calling base station. Requirement The mobile is not in an analog or digital traffic channel. In any other case drop the call with {RELEASE} The mobile is not in test mode.

  • Page 17: Call From Mobile

    Call from Mobile IS-136 MS Call from Mobile WHY? Test whether the mobile sets up a call to the base station. Prober call setup is a requirement for further tests. Requirement The mobile is not in an analog or digital traffic channel.
  • Page 18 IS-136 MS Call from Mobile Fig. 10.9: Call from mobile (analog chan- Fig. 10.10: Call from mobile (digital chan- nel). nel). 10-18...

  • Page 19: Call From Base Station

    Call from Base Station IS-136 MS Call from Base Station WHY? Test whether the base station sets up a call to the mobile. Proper call setup is a requirement for further tests. Requirement The mobile is not in an analog or digital traffic channel.

  • Page 20: Handoff Procedures

    IS-136 MS Handoff Procedures Handoff Procedures You use the handoff procedures to test whether the mobile – during a call – correctly adopts changes in transmission parameters (channel, SAT, power level, time slot, etc) as instructed by the base station (ie the test setup).

  • Page 21: Manual Change Of Channel

    Handoff Procedures IS-136 MS Manual change of channel HOW? To change the type of traffic channel, change from scroll variable To TC to To analog digital (VSELP) or To digital TC (ACELP) or vice versa (the TC number does not have to be changed).
  • Page 22 IS-136 MS Handoff Procedures Select the other test conditions shown in Fig. 10.11. Press to start the test. {SINGLE_STEP} {AUTO-HANDOFF} : the test is stopped when the result of the {SINGLE_STEP} current channel is available. Pressing the softkey will move you to the next predefined channel and display the test results.

  • Page 23: Change Sat

    Handoff Procedures IS-136 MS Change SAT WHY? Test whether the mobile switches to a different SAT (supervisory audio tone), sends this back correctly to the base station and thus maintains connection. Requirement The mobile is not in test mode. Make the general test preparations. The channel type must be To analog TC.

  • Page 24: Change Analog/Digital Power Level

    IS-136 MS Handoff Procedures Change analog/digital power level WHY? Test whether the mobile correctly switches to a different power level. Requirement The mobile is not in test mode. Make the general test preparations. Initiate a call with (the mobile must be {MOBILE} {CELL.}...

  • Page 25: Change Dvcc

    Handoff Procedures IS-136 MS Change DVCC WHY? Test whether the mobile switches to a different DVCC, sends this back correctly to the base station and thus maintains connection. Requirement The mobile is not in test mode. Make the general test preparations. The channel type must be To digital TC.

  • Page 26: Change Time Slot

    IS-136 MS Handoff Procedures Change time slot WHY? Test whether the mobile switches correctly to a different time slot and the connection is maintained. Requirement The mobile is not in test mode. Make the general test preparations. The channel type must be To digital TC.

  • Page 27: Change Time Alignment

    Handoff Procedures IS-136 MS Change time alignment WHY? A change of time alignment can be made in complex handoff procedures but shows no effect in the basic test mask. It is not possible to see whether the mobile ac- tually executes the time-alignment instruction from the base station correctly until the BURST mask has been called up.

  • Page 28: Change Transfer Rate

    IS-136 MS Handoff Procedures Change transfer rate WHY? Test whether a half-rate mobile also works correctly in full-rate mode. Requirement The mobile is not in test mode. Make the general test preparations. The channel type must be To digital TC.

  • Page 29: Combined Changes

    Handoff Procedures IS-136 MS Combined changes Besides simple handoff procedures These parameters can be combined in (changing a single parameter), com- any way for handoff procedures plex handoff procedures are also per- missible (changing several parameters Analog TC Digital TC at the same time).

  • Page 30: Hookflash

    IS-136 MS Hookflash Hookflash WHY? Test whether the mobile – during a call – correctly sends the call request for a third subscriber (conference cir- cuit). Requirement The mobile is able to handle hookflash. The mobile is not in test mode.

  • Page 31: Speech Loopback

    Speech Loopback IS-136 MS Speech Loopback WHY? Acoustic check of the entire speech-signal transmission in the mobile (transmit and receive). Requirement The mobile is not in test mode. Make the general test preparations. The channel type must be To digital TC.
  • Page 32 IS-136 MS Speech Loopback 10-32...
  • Page 33 Speech Loopback IS-136 MS IS-136 TX Tests 10-33...

  • Page 34: Modulation Quality

    IS-136 MS Modulation Quality Modulation Quality WHY? Test the modulation characteristics of the mobile. For this the test set offers fast visual judgement of modula- tion quality with the constellation display (graphic pres- entation of modulation parameters) plus comprehensive indication of the measured figures on the numeric dis- play (with peak-hold function).
  • Page 35 Modulation Quality IS-136 MS Test Results RESULt6 Freq.Off. Deviation of mobile transmit frequency from its rating (receive frequency of Communication Test Set). RESULt7 Power Average RF power of mobile(missing measurement va- lue? See box "No PWR figure?" on page 10-24).

  • Page 36: Numeric Display

    IS-136 MS Modulation Quality Numeric display HOW? Press in the constellation display. {NUMERIC} Select the result mode (see examples): {averag = Results shown are averaged from nine bursts. {max_ho = Results shown are maximum figures during measuring time (peak-hold function). In- applicable for results Power and Err.

  • Page 37: Available Display Modes

    Modulation Quality IS-136 MS Fig. 10.21: In two result modes {normal} , measured figures are updated so fast {average} that exact visual evaluation is barely possible. Result mode solves this {max.hold} problem (display of maximum readings). ATT draws your attention to compensation of cable attenuation of test setup (see "General...

  • Page 38: Modulation Spectrum

    IS-136 MS Modulation Quality Modulation spectrum WHY? Test whether the modulation spectrum of the mobile maintains the permissible levels within the 30-kHz chan- nel spacing (otherwise there is adjacent-channel inter- ference). Requirement Make the general test preparations. The channel type must be To digital TC.

  • Page 39: Burst Power & Time Alignment

    Burst Power & Time Alignment IS-136 MS Burst Power & Time Alignment WHY? Visual assessment of the burst and ramping time. Measurement of transmitting power during the burst. Test whether the mobile correctly executes a time align- ment from the base station.

  • Page 40: Adjacent-Channel Power Measurement Acpm

    IS-136 MS Adjacent-Channel Power Measurement ACPM Adjacent-Channel Power Measurement ACPM WHY? Adjacent-channel power is that part of mobile-station power which is emitted as noise in each of the two adjacent channels. To avoid adjacent-channel inter- ference, the noise must not exceed a defined value.
  • Page 41 Adjacent-Channel Power Measurement ACPM IS-136 MS IS-136 RX Tests 10-41...

  • Page 42: Bit Error Rate (Ber)

    IS-136 MS Bit Error Rate (BER) Bit Error Rate (BER) WHY? Bit error rate is a measure of the RF sensitivity of the mobile in a digital channel. BER corresponds to an "analog" sensitivity figure refered to a defined sig- nal/noise ratio.

  • Page 43: Mobile-Assisted Handoff (Maho)

    Mobile-Assisted Handoff (MAHO) IS-136 MS Mobile-Assisted Handoff (MAHO) WHY? MAHO checks the capability of the mobile to assist the base station in a handoff. For this purpose the mobile receives a command to measure signal strength in adja- cent channels and to report the result back to the base station.

  • Page 44: Test Without 2Nd Rf Generator

    IS-136 MS Mobile-Assisted Handoff (MAHO) Test without 2nd RF generator HOW? Set the RF level in the MAHO test mask to –60 dBm. Enter the no. of an adjacent channel in the field 2nd DTC. Enter the DTC RF band for 2nd RF channel.
  • Page 45 Mobile-Assisted Handoff (MAHO) IS-136 MS Analog Tests 10-45...

  • Page 46: Background Signaling

    IS-136 MS Background Signaling Background Signaling As soon as a connection has been set up between the test set and a mobile, the DUPLEX or RX mask can be called up at any time. Here it is then possible to perform further typical mobile tests (eg the SAT loop test described at the beginning of Chapter 10).
  • Page 47 Background Signaling IS-136 MS RS-232 interface 10-47...

  • Page 48: Application Notes

    {STATUS} status, a software update will be necessary. Do not start the IS-136 MS Test system program: the RS-232 interface of the D-AMPS module will not work properly if the IS-136 MS Test system program is called up at the same time.

  • Page 49: Pinning Of Rs-232 Interface

    Application Notes IS-136 MS Pinning of RS-232 interface Bu 105 Pin 1 = Pin 5 = Pin 2 = Pin 6 = Pin 3 = Pin 7 = Pin 4 = Pin 8 = Pin 9 = 10-49...
  • Page 50 IS-136 MS Application Notes 10-50...
  • Page 51 Application Notes IS-136 MS Appendix 10-51...

  • Page 52: Technical Data

    IS-136 MS Technical Data Technical Data System Bandwidth Number of Boundary Transmitter frequencies (MHz) channels channels Mobile (MHz) Base (MHz) Not used 824.010 869.010 A’’ 824.040 869.040 1023 825.000 870.000 825.030 870.030 834.990 879.990 835.020 880.020 844.980 889.980 A’ 845.010 890.010...

  • Page 53: A Little Is-136 Background Information

    A Little IS-136 Background Information IS-136 MS A Little IS-136 Background Information All IS-136 mobiles are dual mode, meaning that a mobile can use the analog and the digital network. To maintain compatibility with the analog (E)AMPS network, channel spacing is 30 kHz. This results in the requirement to limit the bandwidth of a carrier to ±15 kHz in the modulation spectrum.
  • Page 54 IS-136 MS A Little IS-136 Background Information In each time slot the mobile or base station has to ramp its power up and down at the beginning and end of the time slot within specified limits. The resulting signal is called a burst. The duration of a burst is 6.66 ms. This is exactly the duration of a time slot.

  • Page 55: Back Panel

    Back Panel IS-136 MS Back Panel Bu15 Bu90 Bu20 Bu107 Bu108 Bu29 Bu99 Bu104 Bu103 Bu95 S101 Bu105 Bu97 Bu27 Bu12 Bu106 Bu98 Bu13 Fig. 10.27: If sockets Bu 103 are not connected as marked here, no call setup is possible between mobile and test set.

  • Page 56: Set Number Of Measurements

    IS-136 MS Set Number of Measurements Set Number of Measurements To set the number of measurements in the AUTORUN or remote-control mode, use the following IEEE command only if the screen shows the IS-136 basic mask, the constellation display or the numeric display:...
  • Page 57 Set Number of Measurements IS-136 MS Lifeline The chronological lifeline tells you what modifications have been made to the software (SW) and the operating instructions. After a software update the lifeline helps you to find out quickly about all major changes (see code) in the updated operating instructions that are supplied.
  • Page 58 IS-136 MS Set Number of Measurements 10-58...

This manual is also suitable for:

Is-136 dbStabilock 4031Stabilock 4032

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