Page 1 Test and Measurement Division Service Manual Instrument Radio Unit R&S CRTU-RU 1138.4000 Printed in the Federal Republic of Germany 1140.0050.82-04-...
Page 2 Throughout this manual CRTU-RU is generally used as an abbreviation for the Radio Unit R&S CRTU-RU. GPIB is a trademark or a registered trademark of National Instruments Drive Image, PartitionMagic, BootMagic are registered trademarks of PowerQuest...
Page 3 Radio Unit R&S CRTU-RU Tabbed Divider Overview Tabbed Divider Overview Spare Parts Express Service List of R&S Representatives Safety Instructions Contents Contents of Manuals for Universal Radio Communication Tester CMU Tabbed Divider Chapter 1: Performance Test Chapter 2: Adjustment Chapter 3:...
Page 5: Table Of Contents
Fig. 1-6 Test setups for RX demodulation measurements..............1.6 Fig. 3-1 Block diagram of CRTU Radio Unit..................3.2 Fig. 4-1 "New" vs. "old" partition structure on the CRTU-RU hard disk..........4.2 Fig. 4-2 Drive mapping after booting the GSM Operation Software (old partition structure)....4.3 Fig.
Page 7 Safety Instructions This unit has been designed and tested in accordance with the EC Certificate of Conformity and has left the manufacturer’s plant in a condition fully complying with safety standards. To maintain this condition and to ensure safe operation, the user must observe all instructions and warnings given in this operating manual.
Page 8 Safety Instructions 10. Ensure that the connections with information Electrostatics via the connectors may dam- technology equipment comply with IEC950 / age the equipment. For the safe handling and EN60950. operation of the equipment, appropriate measures against electrostatics should be im- 11.
Page 9 Safety Instructions The instrument contains components which are hazardous to electrostatic exposure and which are marked by the following symbol: • To avoid damage of electronic components, the operational site must be protected against electrostatic di- scharge (ESD). The following two methods of ESD protection may be used together or separately: Wrist strap with cord •...
Page 10 Spare Parts Express Service Phone: +49 89 4129 - 12465 Fax: +49 89 41 29 - 13306 E-mail:werner.breidling@rsd.rohde-schwarz.com In case of urgent spare parts requirements for this Rohde & Schwarz unit, please contact our spare parts express service. Outside business hours, please leave us a message or send a fax or e-mail.
Page 11 Adressen/Addresses FIRMENSITZ/HEADQUARTERS Phone Zweigniederlassung Süd, Geschäftsstelle +49 (89) 41 86 95-0 München +49 (89) 40 47 64 E-mail Mühldorfstraße 15 · D-81671 München Postfach 80 14 69 · D-81614 München Rohde & Schwarz GmbH & Co. KG +49 (89) 41 29-0 Mühldorfstraße 15 ·...
Page 12 Adressen/Addresses Canada ROHDE & SCHWARZ CANADA Inc. +1 (613) 592 80 00 Denmark ROHDE & SCHWARZ DANMARK A/S +45 (43) 43 66 99 555 March Rd. +1 (613) 592 80 09 Ejby Industrivej 40 +45 (43) 43 77 44 Kanata, Ontario K2K 2M5 cgirwarnauth@rscanada.ca 2600 Glostrup Canada...
Page 13 Adressen/Addresses India ROHDE & SCHWARZ India Pvt. Ltd. +91 (80) 535 23 62 Kazakhstan ROHDE & SCHWARZ Kazakhstan +7 (32) 72 63 55 55 Bangalore Office +91 (80) 535 03 61 Representative Office Almaty +7 (32) 72 63 46 33 No.
Page 14 Adressen/Addresses New Zealand Nichecom +64 (4) 232 32 33 Singapore ROHDE & SCHWARZ +65 68 46 37 10 1 Lincoln Ave. +64 (4) 232 32 30 Support Centre Asia PTE Ltd. +65 67 49 17 91 Tawa, Wellington rob@nichecom.co.nz 1 Kaki Bukit View rsca@rssg.rohde-schwarz.com #04-05/07 Techview Singapore 415 941...
Page 15 Adressen/Addresses Trinidad siehe / see Mexico Vietnam Schmidt Vietnam Co., (H.K.) Ltd., +84 (4) 834 61 86 &Tobago Representative Office in Hanoi +84 (4) 834 61 88 Intern. Technology Centre svnhn@schmidtgroup.com 8/F, HITC Building 239 Xuan Thuy Road Cau Giay, Tu Liem Tunisia TELETEK Hanoi...
Page 17 Radio Unit R&S CRTU-RU Manuals Contents of User Documentation for Protocol Tester CRTU Radio Unit Service Manual Instrument This service manual for the CRTU Radio Unit provides information on checking the instrument for compliance with rated specifications, as well as on adjustment, repair and troubleshooting. It further contains all the information necessary for repairing the instrument by replacing modules.
Page 19 Manual Test Procedure ........................1.7 Selftest .............................1.7 Interface Test ...........................1.8 IEC-bus Interface ......................1.8 RS–232 Interface ......................1.8 Control and Sync Bus (CSB) and Trigger Test of CRTU-RU ........1.8 Reference Frequencies ......................1.12 REF IN .........................1.12 REF OUT 1 ........................1.13 REF OUT 2 ........................1.13 TX Frequency Accuracy ......................1.13...
Page 20 Radio Unit R&S Contents of Chapter 1 CRTU-RU RX Power Meter (Frequency-Selective).................1.16 RX Power Meter (Wideband) ....................1.17 RX Harmonics ........................1.17 RX Spurious Response / Image Rejection................1.17 RX SSB Phase Noise......................1.18 RX Residual FM/AM.......................1.18 RX Dynamic/ Average Noise Level ..................1.18 Options for CRTU Radio Unit....................1.19 TX GSM Modulation.....................1.19...
Page 21: Performance Test
Radio Unit R&S CRTU-RU Test Options Performance Test This chapter provides the necessary information for checking the technical data of the CRTU Radio Unit. Please read the general notes on the test procedure on page 1.7 first. The measuring equipment required for the performance test is listed on p.
Page 22: Measuring Instruments And Auxiliary Equipment
Radio Unit R&S Measuring Instruments and Auxiliary Equipment CRTU-RU Measuring Instruments and Auxiliary Equipment Table 1-1 Measuring instruments and auxiliary equipment for manual performance test Item Type of instrument Required characteristics Appropriate device R&S order number Signal generator 100 kHz to 2.7 GHz, SME03 1038.6002.03...
Page 23: Fig. 1-1 Test Setups For Reference Frequencies
Radio Unit R&S CRTU-RU Test Setups Test Setups The quality of the test setup has an effect on the measurement procedures. Note: Make sure to use only high-quality coax cables and coax connectors as well as calibrated measuring equipment. Reference Frequencies...
Page 24: Fig. 1-2 Test Setups For Tx Level Measurements
Radio Unit R&S Test Setups CRTU-RU +5 dBm NRVD NRV-Z51 (CRTU) RF3OUT -33 dBm/ -16 dBm NRVD NRV-Z4 (CRTU) RF1 / -93 dBm to -33 dBm/ -76 dBm to -16 dBm/ -55 dBm to +5 dBm FSIQ or FSE (CRTU)
Page 25: Fig. 1-4 Test Setups For Rx Level Measurements
Radio Unit R&S CRTU-RU Test Setups RX Level Measurements Test setup RX1, RX2 (depending on level range): NRV- NRVD Power Power Splitter Ampl. depending on max. level of power splitter (CRTU) NRV- NRVD -30 dB Power direct. coupl Ampl. (CRTU) Fig.
Page 26: Fig. 1-6 Test Setups For Rx Demodulation Measurements
Radio Unit R&S Tolerance Analysis CRTU-RU RX Demodulation Measurements Test setup RX4: Demodulator (FSE with IF3RX CH1 RF4IN FSE-B7 or (CRTU) FSIQ) 10 MHz Reference Freq. 10 MHz Reference Freq. Fig. 1-6 Test setups for RX demodulation measurements Tolerance Analysis Due to the small measurement uncertainty of the CRTU Radio Unit, the measuring equipment must meet stringent requirements.
Page 27: Manual Test Procedure
Radio Unit R&S CRTU-RU Manual Test Procedure Manual Test Procedure The tests in this section are done with the Service/WCDMA or DOS OPSW/Service software which is accessible from the BootMagic Menu. This menu has to be selected after startup of the CRTU Radio Unit;...
Page 28: Interface Test
Control and Sync Bus (CSB) and Trigger Test of CRTU-RU Overview The purpose of this test is to verify the function of the Control and Sync Bus of the CRTU-RU and external trigger connectors. This test differs depending on whether the CRTU-RU has the additional signalling Link Handler (LH) Boards CRTU-B5 fitted or not.
Page 29 Boot from the "Service/WCDMA" or "DOS OPSW/Service" partition in order to program all devices, then hit "ALT-F4" to get to the command prompt. If the CRTU-RU is not able to start up correctly and gets to the command prompt at once, then call the "initdig" program to ensure that the Digital Board is programmed correctly.
Page 30 Control and Sync Bus Test 2 – External Trigger Bus Test Setup: CTRL-Cable connected to CONTROL A and CONTROL B of the CRTU-RU (loopback). Two BNC Cables connect TRIG OUT A with TRIG IN A and TRIG OUT B with TRIG IN B.
Page 31 Connect one CTRL-Cable from CONTROL A of the CRTU-RU to CONTROL A of the Test Box and one cable from CONTROL B of the CRTU-RU to CONTROL B of the Test Box. Connect a RS232 null modem cable from DATA CH1 to COM1. Connect a...
Page 32: Reference Frequencies
Test remaining connections. Test Setup: Connect one CTRL-Cable from CONTROL A of the RU to CONTROL A of the Test Box and one cable from CONTROL B of the CRTU-RU to CONTROL B of the Test Box. Error case: Check the cable carefully, replace the motherboard if this does not help.
Page 33: Ref Out 1
Radio Unit R&S CRTU-RU Manual Test Procedure REF OUT 1 The level and frequency are checked. Set CRTU Radio Unit to internal reference. Int. 10 MHz: Measure at REF OUT 1: 10 MHz, level > 1.4 V(pp). REF IN Set CRTU Radio Unit to external reference.
Page 34: Tx Level Error
Radio Unit R&S Manual Test Procedure CRTU-RU Control: Set CRTU Radio Unit to desired frequencies and hopping, level 0 dBm. Test: Time from trigger point when the specified offset (< 1 kHz) from the stop frequency is reached. TX Level Error Preparation: Test setup TX1 to TX4 (depending on level range).
Page 35: Tx Non Harmonics
Radio Unit R&S CRTU-RU Manual Test Procedure Test: The suppression of the signal at twice or three times the nominal frequency is measured relative to the nominal signal. Control: Set CRTU Radio Unit to connector RF2, specified frequency, level = –10 dBm.
Page 36: Tx Residual
Radio Unit R&S Manual Test Procedure CRTU-RU Noise measurement function. Test Measure the phase noise at the specified spacing from the carrier. TX Residual FM Preparation: Test setup TX5, no external trigger. Connect spectrum analyzer or modulation analyzer to RF1.
Page 37: Rx Power Meter (Wideband)
Radio Unit R&S CRTU-RU Manual Test Procedure Measuring Bandwidth = 1 kHz. Test: Measure RX level measurement accuracy of CRTU Radio Unit. Note: The given frequencies and levels are suggested values; of course, it is also possible to use other values for the measurement.
Page 38: Rx Ssb Phase Noise
Radio Unit R&S Manual Test Procedure CRTU-RU Test setup RX3, Preparation: Generator = f ; level = –2 dBm. Control: Set CRTU Radio Unit to connector RF4 IN, Max level = 0 dBm, Mode = Low Distortion Test: The suppression of the spurious or image signal is measured relative to the input signal.
Page 39: Options For Crtu Radio Unit
= IF Power, Trigger Level = Medium Test: Measure GSM phase error (rms and peak) as well as frequency error. 1 The purpose of option CRTU-K2 is to enable the GSM bands in the CRTU-RU. Operation by Rohde & Schwarz service representatives only. 1140.0050.82 1.19...
Page 40: Verification Of Gsm Functionality
CRTU-RU Verification of GSM Functionality The following tests are available for a CRTU-RU which belongs to a CRTU-G or CRTU-S test system. The tests, which need to be executed at the service to verify proper GSM protocol test functionality, are split in two groups: •...
Page 41: Real Mobile Overall Test
Run BER_TEST with parameter CngChn. For this test the CRTU-RU sets up a traffic channel on RF channel 1 and performs a Bit Error Rate test. There shall be no incorrect frames but it is ok if there are some bit errors. This is because of the low RF level provided to the mobile.
Page 42: Edge Layer 1 Performance Tool Test
Run MAC_TEST with parameter none. For this test the CRTU-RU sets up an EGPRS channel and sends RLC Data Blocks until the test is terminated with the ESC key. Within this test the proper work of the MAC Speech board is tested. It should be run for at least the time needed to send 5000 blocks.
Page 43: Test Reports
Radio Unit R&S CRTU-RU Test Reports Test Reports ROHDE & SCHWARZ CRTU Radio Unit 1138.4000.82 Serial number: Tested by: Date: Signature: Table 1-2 Test report Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section Ambient temperature during calibration °C...
Page 44 Radio Unit R&S Test Reports CRTU-RU Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section TX Frequency Accuracy TX Frequency accuracy 2200 MHz –2200 +2200 Frequency (TCXO), accuracy –220 +220 (B11), –11 (B12) TX Frequency Settling µs TX frequency settling time F1 = 100 MHz ->F2 = 200 MHz to...
Page 45 Radio Unit R&S CRTU-RU Test Reports Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section µs TX Level settling time at P = –20 dBm to ∆P = 0.5 dB µs TX Level settling time at P = –50 dBm to ∆P = 0.5 dB...
Page 46 Radio Unit R&S Test Reports CRTU-RU Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section TX In-band spurious –40 CRTU setting = 496.5 MHz search freq. ± 5.500 kHz from carrier TX In-band spurious –40 CRTU setting = 925.5 MHz search freq.
Page 47 Radio Unit R&S CRTU-RU Test Reports Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section TX fixed spurious, –40 CRTU setting = 42.05 MHz search freq. 41.55 MHz Level = –20 dBm TX fixed spurious, –40 CRTU setting = 111.3 MHz search freq.
Page 48 Radio Unit R&S Test Reports CRTU-RU Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section TX fixed spurious, –40 CRTU setting = 100 MHz search freq. 1917.12 MHz Level = +10 dBm TX fixed spurious, –40 CRTU setting = 900 MHz search freq.
Page 49 Radio Unit R&S CRTU-RU Test Reports Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section TX fixed spurious, –40 CRTU setting = 1800 MHz search freq. 1684.16 MHz Level = +10 dBm TX fixed spurious, –40 CRTU setting = 1800 MHz search freq.
Page 50 Radio Unit R&S Test Reports CRTU-RU Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section TX SSB phase noise –100 f = 945 MHz, ∆f = 20 kHz TX SSB phase noise –110 f = 945 MHz, ∆f = 250 kHz TX SSB phase noise –110...
Page 51 Radio Unit R&S CRTU-RU Test Reports Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section TX Modulation characteristics TX Modulation characteristics –40 carrier suppression, f = 10 kHz, f = 1000 MHz TX Modulation characteristics –40 carrier suppression, f = –20 kHz, f...
Page 52 Radio Unit R&S Test Reports CRTU-RU Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section RX 3rd harmonic at RF4 IN , f = 50 –20 MHz, CRTU frequency = 150 MHz RX 3rd harmonic at RF4 IN , f = 400 –20...
Page 53 Radio Unit R&S CRTU-RU Test Reports Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section RX inherent spurious response at RF2, –50 = 1226.97 MHz, CRTU frequency = 2200 MHz RX inherent spurious response at RF2, –50 = 1821.4 MHz, CRTU frequency =...
Page 54: Table 1-2 Test Report
Radio Unit R&S Test Reports CRTU-RU Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section RX inherent spurious response at RF2, –50 = 1210.843333 MHz, CRTU frequency = 1210.743333 MHz RX inherent spurious response at RF2, –50 = 1262.31375 MHz, CRTU...
Page 55 Radio Unit R&S CRTU-RU Test Reports Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section RX inherent spurious response at RF4 –50 IN, f = 1262.31375 MHz, CRTU frequency = 1260 MHz RX SSB Phase Noise RX SSB phase noise at RF2 RX SSB –100...
Page 56 Radio Unit R&S Test Reports CRTU-RU Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section RX Residual AM at 500 MHz at RF4 0.02 IN, –20 dBm CCITT, rms RX Residual FM at 900 MHz at RF4 IN, –20 dBm...
Page 57 Radio Unit R&S CRTU-RU Test Reports Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section RX Average Noise Level RX average noise level RX average –100 RF1, RBW = 1 kHz, noise level expPow = 47 dBm, f = 10 MHz RX average noise level –100...
Page 58 Radio Unit R&S Test Reports CRTU-RU Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section RX average noise level –68 RF2, RBW = 500 kHz, expPow = 33 dBm, f = 2700 MHz RX average noise level –73...
Page 59 Radio Unit R&S CRTU-RU Test Reports Item Measure- Measurement ment to uncertainty Description Min. Actual Max. Unit section RX average noise level –95 RF4 IN, RBW = 1 kHz, expPow = –22 dBm, f = 2700 MHz TX Generator level error at RF1 (measurement on frequency cal. points)
Page 60 Radio Unit R&S Test Reports CRTU-RU RX Power meter (frequency selective) level error at RF2 (measurement on frequency cal. points) Frequency 50, 100, 200, 300, 400, 500, 600, 700, 800, 1000, 450, 470, 490, 820, 840, 860, 880, 900, 920, 940, 960,...
Page 61 Radio Unit R&S CRTU-RU Test Reports Options for CRTU: CMU-K2, TX Generator GSM Modulation Output RF3 OUT, level 10 dBm, GSM Non Signaling Training Sequence GSM0, Bit Modulation PRBS, Transmission Burst TX GSM phase error –4 ° at 460 MHz, peak...
Page 62 Radio Unit R&S Test Reports CRTU-RU TX GSM phase error –4 ° at 869 MHz, peak TX GSM phase error –1 ° at 869 MHz, rms TX GSM frequency error –15 at 869 MHz TX GSM phase error –4 °...
Page 63: Table 1-3 Test Report Gsm Functionality
Radio Unit R&S CRTU-RU Test Reports RX GSM frequency error –10 at 1785 MHz, level –14 dBm RX GSM phase error –2 ° at 1850 MHz, peak, level +5 dBm Demodulation RX GSM phase error –0.6 +0.6 ° at 1850 MHz, rms, level +5 dBm RX GSM frequency error –10...
Page 65 Radio Unit R&S CRTU-RU Contents of Chapter 2 Contents 2 Adjustment......................2.1 Manual Adjustment ..........................2.1 Measuring Instruments and Auxiliary Equipment ..............2.1 Preparing the Instrument......................2.2 Adjusting the + 5 VDC Reference Voltage ................2.2 Adjusting the 10 MHz Reference Frequency................2.2 TCXO ..........................2.3 OCXO REFERENCE OSC.
Page 67: Table 2-1 Measuring Instruments And Auxiliary Equipment For Manual Adjustment Of The Crtu Radio Unit
Radio Unit R&S CRTU-RU Manual Adjustment Adjustment The following chapter describes the manual adjustment of the reference sources as well as the software-controlled adjustment of individual module data after module replacement (automatic adjustment of module data). The tests in this chapter are done with the Service/WCDMA or DOS OPSW/Service software which is accessible from the BootMagic Menu.
Page 68: Preparing The Instrument
Radio Unit R&S Manual Adjustment CRTU-RU Preparing the Instrument Opening the casing: Remove the power plug on the CRTU Radio Unit and place the instrument onto the front handles. Loosen the four size 20 Torx screws at the four rear-panel feet and take off the feet.
Page 69: Tcxo
(a lead of at least –2 to –5 Hz at 1 GHz is desired because of aging). Note: The CRTU Radio Unit must have been switched on for at least 5 minutes so that the OCXO has warmed up. During the adjustment, operate the CRTU-RU in the horizontal position. 1140.0050.82...
Page 70: Automatic Adjustment Of Module Data
Radio Unit R&S Automatic Adjustment of Module Data CRTU-RU Automatic Adjustment of Module Data In order to match the data stored in EEPROMs on the respective modules to the complete instrument, an automatic adjustment of module data is always necessary after replacing a module.
Page 71 Radio Unit R&S Contents of Chapter 3 CRTU-RU Contents 3 Repair ........................3.1 Instrument Design and Function Description ................3.1 Block diagram ..........................3.2 Instrument Frame........................3.3 Rear of Instrument Frame ......................3.3 Front of Instrument Frame .......................3.3 Cooling the Instrument ......................3.4 FRONT MODULE ........................3.5 POWER SUPPLY ........................3.6...
Page 72 Radio Unit R&S Contents of Chapter 3 CRTU-RU Removing the FRONT MODULE CONTROLLER from the FRONT MODULE ...3.19 Installing the new FRONT MODULE CONTROLLER..........3.20 Installing the option again and completing the instruments .........3.20 Putting into operation, BIOS update................3.20 Replacing the Lithium Battery in the FRONT MODULE............3.21 Opening the instrument and removing the FRONT MODULE........3.21...
Page 73 Radio Unit R&S Contents of Chapter 3 CRTU-RU Opening the instrument and removing the REFERENCE BOARD......3.34 Installing the new REFERENCE BOARD and completing the instrument ....3.34 Automatic module data adjustment ................3.34 Replacing the RXTX BOARD1/2....................3.35 Opening the instrument and removing the RXTX BOARD1/2 ........3.35 Installing the new RXTX BOARD1/2 and completing the instrument ......3.35...
Page 74 Troubleshooting using the SELFTEST Menu for Modules.............3.55 Troubleshooting using the INFO Menu for Modules ..............3.56 Troubleshooting using the ERROR messages on the LC display..........3.58 Motherboard Test CRTU-RU and CRTU-G ................3.58 More troubleshooting......................3.59 General errors on the transmitter side of the CRTU Radio Unit ........3.59 General errors on the receiver side of the CRTU Radio Unit........3.60...
Page 75: Repair
Radio Unit R&S CRTU-RU Instrument Design and Function Description 3 Repair This chapter describes the design of the CRTU Radio Unit, simple measures for repair and troubleshooting and, in particular, the replacement of modules. For troubleshooting and diagnosis, a maintenance menu is available, which permits to poll diagnostic voltages of the modules and indicate limit violations.
Page 76: Block Diagram
Radio Unit R&S Instrument Design and Function Description CRTU-RU Block diagram MAINS POWER SUPPLY INTERFACES Option M A C SPE EC H Sandwich Module C R T U -B 6 LINKHANDLER1 O C X O CRTU-B5 MOTHERBOARD R E F E R E N C E O S C .
Page 77: Instrument Frame
Radio Unit R&S CRTU-RU Instrument Design and Function Description Instrument Frame The instrument frame consists of front frame, module support, partition, cage and air duct. The module support is screwed to the front frame. It incorporates the partition, the cage and the air duct and provides all mechanical connectors and slots for modules.
Page 78: Cooling The Instrument
Radio Unit R&S Instrument Design and Function Description CRTU-RU Cooling the Instrument Axial fan in the casing The right side panel contains a temperature-controlled axial fan (120 mm x 120 mm x 38 mm), which sucks in cold ambient air at the right tube of the casing and blows it through the modules via a ventilation duct and further ventilation slots.
Page 79: Front Module
Radio Unit R&S CRTU-RU Instrument Design and Function Description FRONT MODULE The FRONT MODULE consists of an aluminum case panel and a mounting plate which accommodates the LCD, the keyboard mat with the membrane and the spinwheel. The case panel incorporates the FRONT MODULE CONTROLLER, the fan and the hard disk.
Page 80: Power Supply
Radio Unit R&S Instrument Design and Function Description CRTU-RU POWER SUPPLY The POWER SUPPLY of the CRTU Radio Unit consists of a two-part aluminum casing with three boards arranged in a so-called sandwich technique (U-shape). In addition to cooling, the axial fan already mentioned above (see cooling of instrument) is also used to support the three boards.
Page 81: Motherboard
Radio Unit R&S CRTU-RU Instrument Design and Function Description The third printed circuit board which serves as a connection between Standby converter the first and second board accommodates the control and monitoring and control unit circuit parts. Besides, it includes the standby converter, which generates a +12-V standby voltage from the 380 VDC voltage of the PFC circuit.
Page 82: Reference Board
Radio Unit R&S Instrument Design and Function Description CRTU-RU REFERENCE BOARD The REFERENCE BOARD provides all required clock signals (NETCLK1/2) and reference frequencies (110.8 MHz) as well as the +5 VDC reference voltage for the CRTU Radio Unit. The REFERENCE BOARD is a plug-in module in HVC design.
Page 83: Option Ocxo Reference Osc. Crtu-B2
Radio Unit R&S CRTU-RU Instrument Design and Function Description Option OCXO REFERENCE OSC. CRTU-B2 This option consists of a printed circuit board with the reference element OCXO (oven-controlled crystal oscillator), the control circuit and a potentiometer for adjusting the OCXO.
Page 84: Rxtx Board1/2
Radio Unit R&S Instrument Design and Function Description CRTU-RU connectors (RF1, RF2, RF3OUT) and attenuate or amplify them according to the selected output and level. On the receiver side (RX), its purpose is to internally distribute external RF signals from the different N-connectors (RF1, RF2, RF3OUT) and attenuate or amplify them according to the selected input and the applied level.
Page 85 Radio Unit R&S CRTU-RU Instrument Design and Function Description tuning range. All LOs are synchronized by the MMCX connector 110.8MHz at the bottom of the module with the reference frequency from the REFERENCE BOARD. Besides, an MMCX connector at the top of the RXTX BOARD1/2 is designed as input with the second transmitter IF (RESIF2TX) which is activated via software switches.
Page 86: Digital Board
Radio Unit R&S Instrument Design and Function Description CRTU-RU DIGITAL BOARD The DIGITAL BOARD constitutes the central control and measurement board which contains all circuit parts for conversion and further processing of the analog IF (receiver side) into digital I/Q values.
Page 87: Option Linkhandler1/2 Crtu-B5
Radio Unit R&S CRTU-RU Instrument Design and Function Description The sandwich modules TXDSP MODULE1/2 are directly plugged onto TXDSP MODULE1/2 the DIGITAL BOARD via two multipoint connectors. It contains the DSP on the transmitter side (TXDSP), which generates I/Q data...
Page 88: Transmitter Function
Radio Unit R&S Instrument Design and Function Description CRTU-RU of the MAC SPEECH board via direct serial interfaces to get a maximum data rate. Two auxiliary DSP Modules are reserved for future extensions. An additional reserved module slot with multipoint connectors is used for pre-production boundary scan testing.
Page 89: Dsp 56301 Module
Radio Unit R&S CRTU-RU Instrument Design and Function Description The sandwich modules are directly plugged onto the LINKHANDLER via DSP 56301 Module multipoint connectors. They contain the DSPs including the memory. Option IQIF BOARD CRTU-B7 The IQIF BOARDs contains all circuit parts for generating IQ In and Out for 2 RX and TX channels.
Page 90 Radio Unit R&S Instrument Design and Function Description CRTU-RU On the transmitter side an IF signal provided by the DIGITAL BOARD is Transmitter functions (x stands for first or second applied to the MMCX connector IF3TXCHxIN of the IQIF BOARD. This...
Page 91: Module Replacement
Radio Unit R&S CRTU-RU Module Replacement Module Replacement Caution! Disconnect the instrument from the mains before opening the casing. Please note the safety instructions at the beginning of this manual. When mounting the tube take care not to damage or pull off cables.
Page 92: Installing The New Front Module And Completing The Instrument
Radio Unit R&S Module Replacement CRTU-RU Installing the new FRONT MODULE and completing the instrument Install the old PCMCIA INTERFACE in a new FRONT MODULE in the reverse order. Install the new FRONT MODULE in the CRTU Radio Unit in the reverse order.
Page 93: Replacing The Front Module Controller In The Front Module
Radio Unit R&S CRTU-RU Module Replacement Replacing the FRONT MODULE CONTROLLER in the FRONT MODULE (see chapter 5, spare part list, Current No. 270 and explosion drawing 1090.9244.01 D sheet 4) The FRONT MODULE CONTROLLER is incorporated in the FRONT MODULE. For replacement...
Page 94: Installing The New Front Module Controller
Radio Unit R&S Module Replacement CRTU-RU Installing the new FRONT MODULE CONTROLLER Carefully insert the new FRONT MODULE CONTROLLER, fasten using the eleven combi screws and reconnect the cable to the fan. Carefully reconnect the ribbon cable to the FRONT MODULE CONTROLLER.
Page 95: Replacing The Lithium Battery In The Front Module
Radio Unit R&S CRTU-RU Module Replacement Replacing the Lithium Battery in the FRONT MODULE (see chapter 5, spare part list, Current No. 280 and explosion drawing 1090.9244.01 D sheet 4) The lithium battery is accommodated on the FRONT MODULE CONTROLLER board inside the FRONT MODULE.
Page 96: Installing The New Battery And Completing The Instrument
Radio Unit R&S Module Replacement CRTU-RU Note: The lithium battery is of the type CR2032 (spare part list, Current No. 280). Caution! Lithium batteries must not be exposed to high temperatures or fire. Keep away from children. If the battery is replaced improperly, there is danger of explosion. Only replace the battery by R&S type (spare part list, Current No.
Page 97: Replacing The Hard Disk In The Front Module
The hard disk is incorporated outside on the back of the aluminum panel of the FRONT MODULE. For replacement proceed as follows: Saving Customer-Specific Data In case the CRTU-RU belongs to a CRTU-G or CRTU-S system the following files, containing registration codes, have to be saved onto a PCMCIA card or to the network site. C:\CONFIG\REG_INFO.DAT Opening the instrument and removing the FRONT MODULE Switch off the instrument, pull the mains plug and unscrew the rear-panel feet.
Page 98: Customizing The Hard Disk
Note the CRTU-K2 and CRTU-K5 (for CRTU-G only) code which is usually affixed at the lateral panel of the instrument casing (tube) or at the rear panel of the CRTU-RU. If the serial number of the CRTU-RU begins with “8xx xxx” the following K5 codes apply: 1140.0050.82...
Page 99: Installing The Gsm Operational Software
CRTU-G or CRTU-S system. The CR02P2P software is located on the Service Harddisk (1139.0573.00) which is part of the Service Kit CRTU-Z3 (1139.0509.02). For the file-copy process it is necessary to connect both harddisks to the IDE controller of the CRTU-RU. To this end the unit must be opened.
Page 100: Cleaning Up The System
Login as “Administrator” with no password. Complete each modification of a CRTU-RU belonging to a CRTU-G or CRTU-S system by checking the tray icon in the bottom right corner of the desktop. For each system the correct tray icon must be displayed.
Page 101: Making The Memory Modules Accessible
Radio Unit R&S CRTU-RU Module Replacement Making the memory modules accessible Unscrew the two countersunk screws on the cover of the PCMCIA INTERFACE and carefully pull out the option from the FRONT MODULE towards the front. Place the FRONT MODULE onto a clean surface with the aluminum panel pointing downwards.
Page 102: Replacing The Lcd And/Or Dc/Ac Converter In The Front Module
Radio Unit R&S Module Replacement CRTU-RU Replacing the LCD and/or DC/AC Converter in the FRONT MODULE (see chapter 5, spare part list, LCD: Current No. 200, DC/AC Converter: Current No. 240 and explosion drawing 1090.9244.01 D sheet 4) The LCD is accommodated on the mounting plate of the FRONT MODULE together with the associated DC/AC converter.
Page 103: Removing The Lcd And/Or Dc/Ac Converter
Radio Unit R&S CRTU-RU Module Replacement Removing the LCD and/or DC/AC Converter Unscrew the two screws of the DC/AC converter shielding and pull off the plug of the connecting cable to the DC/AC converter. If required, unscrew the two screws of the DC/AC converter and loosen the connecting cable to the FRONT MODULE CONTROLLER.
Page 104: Replacing The Keyboard Membrane And/Or Mat On The Front Module
Radio Unit R&S Module Replacement CRTU-RU Replacing the Keyboard Membrane and/or Mat on the FRONT MODULE (see chapter 5, spare part list, Current No. 140 (Keyboard Mat) / 145 (Keyboard Membrane) and explosion drawing 1090.9244.01 D sheet 4) The keyboard membrane is the contact film for the rubber keys (mat) behind the labeling panel and the keyboard frame.
Page 105: Installing The New Membrane And Completing The Instrument
Radio Unit R&S CRTU-RU Module Replacement Installing the new membrane and completing the instrument Insert the new membrane and/or mat in the reverse order, insert the mat at the correct position (observe the labeling of the keys!) and fasten the keyboard frame with screws.
Page 106: Replacing The Pcmcia Interface
Radio Unit R&S Module Replacement CRTU-RU Replacing the PCMCIA INTERFACE (see chapter 5, spare part list, Current No. 500 (PCMCIA INTERFACE, and explosion drawing 1138.4000.01 D sheet 2) The PCMCIA INTERFACE is fitted on the FRONT MODULE. For replacement proceed as follows: Opening the instrument and removing the FRONT MODULE Switch off the instrument, pull the mains plug and unscrew the rear-panel feet.
Page 107: Replacing The Rf Frontend
Radio Unit R&S CRTU-RU Module Replacement Replacing the RF FRONTEND (see chapter 5, spare part list, Current No. 320 and explosion drawing 1138.4000.01 D sheet 2) The RF FRONTEND is installed at the bottom of the CRTU Radio Unit at the front right. For...
Page 108: Replacing The Reference Board
Radio Unit R&S Module Replacement CRTU-RU Replacing the REFERENCE BOARD (see chapter 5, spare part list, Current No. 340 and explosion drawing 1138.4000.01 D sheet 2) The REFERENCE BOARD is installed at the front right top of the CRTU Radio Unit as plug-in module in the cage.
Page 109: Replacing The Rxtx Board1/2
Radio Unit R&S CRTU-RU Module Replacement Replacing the RXTX BOARD1/2 (see chapter 5, spare part list, Current No. 350/370 and explosion drawing 1138.4000.01 D sheet 2) The RXTX BOARD1/2 is installed in the module support as plug-in module. For replacement proceed as...
Page 110: Replacing The Tr-Correction Module In The Rxtx Board1/2
Radio Unit R&S Module Replacement CRTU-RU Replacing the TR-CORRECTION MODULE in the RXTX BOARD1/2 (see chapter 5, spare part list, Current No. 360/380 and explosion drawing 1100.1733.01 DF sheet 3) The TR-CORRECTION MODULE is incorporated in the RXTX BOARD1/2 as sandwich module. For...
Page 111: Replacing The Digital Board
Radio Unit R&S CRTU-RU Module Replacement After the adjustment has been terminated, the operating software starts automatically and the CRTU Radio Unit is ready for use and complies with the specifications, except for the high-precision level accuracy. In order to achieve the level accuracy as described in the data sheet, a so-called path error data record is necessary.
Page 112 Radio Unit R&S Module Replacement CRTU-RU After the adjustment has been terminated, the operating software starts automatically and the CRTU Radio Unit is ready for use and complies with the specifications, except for the high-precision level accuracy. In order to achieve the level accuracy as described in the data sheet, a so-called path error data record is necessary.
Page 113: Replacing The Modules: Adc Module1/2, Ddc Module1/2, Txdsp Module1/2, Auc Module1/2 In The Digital Board
Radio Unit R&S CRTU-RU Module Replacement Replacing the Modules: ADC MODULE1/2, DDC MODULE1/2, TXDSP MODULE1/2, AUC MODULE1/2 in the DIGITAL BOARD (see chapter 5, spare part list, Current No. 470/480 (ADC MODULE1/2), Current No. 410/420 (DDC MODULE1/2), Current No. 450/460 (TXDSP MODULE1/2), Current No. 430/440 (AUC MODULE1/2) and explosion drawing 1100.1791.01 D sheet 2)
Page 114: Automatic Module Data Adjustment
Radio Unit R&S Module Replacement CRTU-RU Automatic module data adjustment  Boot up within BootMagic menu into “DOS OPSW / Service” or “Service / WCDMA”. During startup observe the display. When three BEEPs can be heard, press the MENU SELECT key.
Page 115: Replacing The Option Ocxo Reference Osc. Crtu-B2
Radio Unit R&S CRTU-RU Module Replacement Replacing the Option OCXO REFERENCE OSC. CRTU-B2 (see chapter 5, spare part list, Current No. 530 (OCXO REFERENCE OSC. CRTU-B2) and explosion drawing 1138.4000.01 D sheet 2) The Option OCXO REFERENCE OSC. is fitted at the right side panel below the instrument fan in the CRTU Radio Unit.
Page 116: Replacing The Option Linkhandler 1/2 Crtu-B5
Radio Unit R&S Module Replacement CRTU-RU Replacing the Option LINKHANDLER 1/2 CRTU-B5 (see chapter 5, spare part list, Current No. 540/590 and explosion drawing 1138.4000.01 D sheet 2) The option LINKHANDLER 1/2 is installed in the module support as plug-in module. For replacement...
Page 117: Replacing The Modules: Dsp Module0/1/2/3/4/5 In The Linkhandler 1/2
Radio Unit R&S CRTU-RU Module Replacement Replacing the Modules: DSP MODULE0/1/2/3/4/5 in the LINKHANDLER 1/2 (see chapter 5, spare part list, Current No. 560/561 and 570/571/572/573 and explosion drawing 1135.5406.01 sheet 2) The sandwich modules DSP MODULE0 to DSP MODULE5 are installed in the LINKHANDLER as plug- in modules.
Page 118 Radio Unit R&S Module Replacement CRTU-RU The automatic module data adjustment is performed under software control, firmware updates for microprocessors and programmable devices being performed as well. This may take a few minutes. After the adjustment has been terminated, the operating software starts automatically and the CRTU Radio Unit is ready for use and complies with the specifications.
Page 119: Replacing The Option Mac Speech Crtu-B6
Radio Unit R&S CRTU-RU Module Replacement Replacing the Option MAC SPEECH CRTU-B6 (see chapter 5, spare part list, Current No. 580 and explosion drawing 1138.4000.01 D sheet 2) The option MAC SPEECH is installed in the module support as plug-in module. For replacement...
Page 120: Replacing The Modules: Dsp Module In The Mac Speech
Radio Unit R&S Module Replacement CRTU-RU Replacing the Modules: DSP MODULE in the MAC SPEECH (see chapter 5, spare part list, Current No. 600/601 and explosion drawing 1135.5793.01 sheet 2) The DSP sandwich module is installed in the MAC SPEECH as a plug-in module. For replacement...
Page 121: Replacing The Option Iqif Board Crtu-B7
Radio Unit R&S CRTU-RU Module Replacement Replacing the Option IQIF BOARD CRTU-B7 (see chapter 5, spare part list, Current No. 610 and explosion drawing 1138.4000.01 D sheet 2) The option IQIF BOARD is installed in the module support as plug-in module. For replacement proceed...
Page 122: Replacing The Power Supply
Radio Unit R&S Module Replacement CRTU-RU Replacing the POWER SUPPLY (see chapter 5, spare part list, Current No. 520 and explosion drawing 1138.4000.01 D sheet 2) The POWER SUPPLY is fitted at the rear of the instrument frame of the CRTU Radio Unit. For...
Page 123: Replacing The Motherboard
Radio Unit R&S CRTU-RU Module Replacement Replacing the MOTHERBOARD (see chapter 5, spare part list, Current No. 490) The MOTHERBOARD consists of five parts: MOTHERBOARD1, MOTHERBOARD2, FRONTPANEL BOARD1, FRONTPANEL BOARD2 and REARPANEL BOARD. For replacement of the individual parts proceed as follows:...
Page 124: Motherboard2 (Small Motherboard)
Radio Unit R&S Module Replacement CRTU-RU MOTHERBOARD2 (Small MOTHERBOARD) Opening the instrument and removing MOTHERBOARD2 Switch off the instrument and pull the mains plug and unscrew the rear-panel feet. Place the instrument onto the front carrying handles, push the tube upwards and take off.
Page 125: Frontpanel Board2 (At The Front Of The Instrument Frame)
Radio Unit R&S CRTU-RU Module Replacement FRONTPANEL BOARD2 (at the front of the instrument frame) Opening the instrument and removing the FRONTPANEL BOARD2 Switch off the instrument and pull the mains plug and unscrew the rear-panel feet. Place the instrument onto the front carrying handles, push the tube upwards and take off.
Page 126: Troubleshooting
A SELFTEST and INFO menu, which presents voltages via the module-internal diagnosis and RF loop-measurements with internal RF generator and RF analyzer. These menus are available if the Service/WCDMA partition is booted in the BootMagic™ menu; see description of CRTU-RU software structure and hard disk partitions in chapter 4.
Page 127: Troubleshooting Using The Leds (H1 To H9) On The Motherboard
Radio Unit R&S CRTU-RU Troubleshooting Troubleshooting using the LEDs (H1 to H9) on the MOTHERBOARD • Fault: CRTU Radio Unit cannot be switched on. Mains outlet, mains cable and all switches in Provide appropriate the circuit of the mains AC supply voltage!
Page 128 Radio Unit R&S Troubleshooting CRTU-RU • Fault: Short-circuit of one or several operating voltages Check LEDs (H1 to H9) at the bottom of MOTHERBOARD1 to determine which voltage is short- circuited. Note: In the case of a short-circuit, the power supply switches off all voltages after a short period of time.
Page 129: Troubleshooting Using The Selftest Menu For Modules
The SELFTEST menu is available if the Service/WCDMA partition is booted in the BootMagic™ menu; see description of CRTU-RU software structure and hard disk partitions in chapter 4. It can be called up via the MENU SELECT key on the front panel of the CRTU Radio Unit: Use the spinwheel in the MENU SELECT menu to select BASE and confirm with ENTER.
Page 130: Troubleshooting Using The Info Menu For Modules
The INFO menu is available if the Service/WCDMA partition is booted in the BootMagic™ menu; see description of CRTU-RU software structure and hard disk partitions in chapter 4. It can be called up via the INFO key on the front panel of the CRTU Radio Unit.
Page 131 Radio Unit R&S CRTU-RU Troubleshooting • Example: Info menu REFERENCE BOARD Fault: The frequency accuracy of the RF signal deviates. Call the Maintenance Menu via the INFO Key select REFERENCE BOARD, start the diagnosis measurement using the TEST Key and activate the ON hardkey.
Page 132: Troubleshooting Using The Error Messages On The Lc Display
331 Communication error correction processor TR-CORRECTION MODULE on handshake RXTX BOARD1/2 Motherboard Test CRTU-RU and CRTU-G Please refer to section Control- and Sync-Bus (CSB) and Trigger Test of CRTU-RU in chapter 1for detailed test instructions. 1140.0050.82 3.58...
Page 133: More Troubleshooting
Radio Unit R&S CRTU-RU Troubleshooting More troubleshooting General errors on the transmitter side of the CRTU Radio Unit Error description Troubleshooting to Setting frequency in the module test faulty REFERENCE BOARD MMCX cable W12 RXTX BOARD1/2 TR-CORRECTION MODULE1/2 MMCX cable W17...
Page 134: General Errors On The Receiver Side Of The Crtu Radio Unit
Radio Unit R&S Troubleshooting CRTU-RU General errors on the receiver side of the CRTU Radio Unit Error description Troubleshooting to Received frequency in the module test faulty REFERENCE BOARD MMCX cable W12 RXTX BOARD1/2 TR-CORRECTION MODULE1/2 MMCX cable W19 ADC MODULE1/2...
Page 135 Updating Factory Images ......................4.6 Creating User-Specific Images ....................4.6 Restoring Existing Images .......................4.6 Front Module Controller Bios......................4.7 Front Module Controller Bios Update ..................4.7 CRTU-RU MS Software ........................4.8 CRTU-RU MS Software Installation or Update ................4.8 Reinstalling Old Software ......................4.9 Installing Hardware Options......................4.10 1140.0050.82 I-4.1...
Page 137: Software Update/Installing Options
Partitions on p. 4.5 ff. and operating manual for CRTU-G/S and CRTU-W. The software packages are stored in different partitions of the CRTU-RU hard disk and can be booted separately in the BootMagic™ startup menu; see Table 4-1 on p. 4.3.
Page 138: Fig. 4-1 "New" Vs. "Old" Partition Structure On The Crtu-Ru Hard Disk
"Old" partition structure "New" partition structure Fig. 4-1 "New" vs. "old" partition structure on the CRTU-RU hard disk "Old" Partition Structure The hard disk with the "old" structure of a CRTU Radio Unit is divided into 4 partitions: 1. SERV_WCDMA partition, 306 MB, FAT16 format 2.
Page 139: Fig. 4-2 Drive Mapping After Booting The Gsm Operation Software (Old Partition Structure)
Drive mapping after booting the GSM Operation Software (old partition structure) Table 4-1 Software packages, boot partitions and hard disk partitions Software package Hard disk partition CRTU-RU MS software SERV_WCDMA Additional software tools (software organization, backup) MAINTAIN GSM operational software and test packages CRTU_OS "New"...
Page 140: Fig. 4-3 Drive Mapping After Booting The Windows Opsw (New Partition Structure)
Radio Unit R&S Structures of Hard Disk Partitions CRTU-RU If the DOS OPSW / Service partition is booted, only one drive will be visible: • SERV_WCDMA (C:) If the Maintenance (backup) partition is booted, the following drives will be visible: •...
Page 141: Table 4-2 Software Packages, Boot Partitions And Hard Disk Partitions
CRTU-RU Maintaining and Restoring Hard Disk Partitions Table 4-2 Software packages, boot partitions and hard disk partitions Software package Hard disk partition CRTU-RU MS software SERV_WCDMA Additional software tools (software organization, backup) MAINTAIN GSM operational software and test packages CRTU_SW...
Page 142: Table 4-3 Images And Image Files
Note: For R&S production and service only. Any time when the "CRTU-RU MS Base SW" or "CRTU-RU MS GSM SW" or "CRTU-RU MS WCDMA SW" is updated or modified, the Service/WCDMA resp. DOS OPSW / Service partition image must be recreated: service.pqi resp.
Page 143: Front Module Controller Bios
CRTU-RU Front Module Controller Bios Front Module Controller Bios The Bios configures the Front Module Controller to support the CRTU-RU MS software and the GSM Protocol Testing software. Special settings allow Windows 2000 to access the hardware without conflicts. Only the CRTU Radio Unit default settings are guaranteed to work properly.
Page 144: Fig. 4-4 Versionmanager
CRTU-RU CRTU-RU MS Software In the framework of GSM Protocol Testing the CRTU-RU MS software is only used for service purposes. It enables remote-controlled automatic determination of compensation data and calibration of the CRTU Radio Unit. In the framework of WCDMA Testing the software is also used as a regular operational software.
Page 145: Reinstalling Old Software
VersionManager. To this end, proceed as follows: Switch on the CRTU-RU. After the boot-up sequence is terminated (from the moment when the CRTU-RU display turns black until the end of the 3-beep acoustic signal), press the MENU SELECT key.
Page 146: Installing Hardware Options
Radio Unit R&S Installing Hardware Options CRTU-RU Installing Hardware Options The following hardware options are available for the CRTU Radio Unit: Option OCXO REFERENCE OSC. 2*10 Aging/year CRTU-B2 1139.0396.02 Option LINKHANDLER CRTU-B5 1139.0209.02 Option MAC SPEECH CRTU-B6 1139.0280.02 Option IQIF BOARD CRTU-B7 1139.0009.02...
Page 147 Radio Unit R&S CRTU-RU Contents of Chapter 5 Contents 5 Documents......................5.1 Module and Cable Exchange......................5.1 List of Spare Parts for CRTU Radio Unit ..................5.5 Drawings ............................5.13 1140.0050.82 I-5.1...
Page 149: Documents
Radio Unit R&S CRTU-RU Module and Cable Exchange Documents This chapter contains the documents for the CRTU Radio Unit. The documents for the modules with the description of function, adjustment and interfaces are relegated to the Service Manual, Stock no.
Page 150: Table 5-1 List Of Power Cables Available
Radio Unit R&S Module and Cable Exchange CRTU-RU The defective parts must be sent back with a returned accompanying document containing the fol- lowing information: • Stock number, serial number and designation of the dismounted part, • Precise description of the error, •...
Page 151 Overview of Spare Parts for CRTU Radio Unit 1140.0050.82...
Page 153: List Of Spare Parts For Crtu Radio Unit
Radio Unit R&S CRTU-RU List of Spare Parts for CRTU Radio Unit List of Spare Parts for CRTU Radio Unit The CRTU Radio Unit is constructed in accordance with R&S design 2000. Overall dimension: W x H x L, 465 mm x 193 mm x 517 mm...
Page 154 Radio Unit R&S List of Spare Parts for CRTU Radio Unit CRTU-RU Current No. Designation Stock No. Electr. No. Shielded filter plate 1091.2014.00 RF Spring long 1069.3011.00 RF Spring short 1069.3105.00 Plate support 0852.0844.00 0048.6980.00 A 14 Display connector 1091.2620.00...
Page 155 Radio Unit R&S CRTU-RU List of Spare Parts for CRTU Radio Unit Current No. Designation Stock No. Electr. No. RX/TX BOARD2 1100.1733.02 1135.6702.02 TR CORRECTION MODULE 1100.1604.02 A 301 DIGITAL BOARD 1100.1791.03 DIGITAL BOARD 1100.1804.02 A 700 DDC MODULE1 1100.2300.03...
Page 156 Radio Unit R&S List of Spare Parts for CRTU Radio Unit CRTU-RU Current No. Designation Stock No. Electr. No. LINKHANDLER 1135.5406.02 LINK HANDLER BOARD 1135.5412.02 DSP MODULE (56311) 1135.4600.02 DSP MODULE (56311) 1135.4600.02 DSP MODULE (56301) 1135.5506.03 DSP MODULE (56301) 1135.5506.03...
Page 157 Radio Unit R&S CRTU-RU List of Spare Parts for CRTU Radio Unit Current No. Designation Stock No. Electr. No. RF cable 1139.0096.00 W 508* RF cable 1139.0109.00 W 509* RF cable 1139.0115.00 W 511* RF cable 1139.0138.00 W 516* RF cable 1139.0144.00...
Page 158 Radio Unit R&S List of Spare Parts for CRTU Radio Unit CRTU-RU Current No. Designation Stock No. Electr. No. RF cable 1100.4110.00 W 27* RF cable 1100.4132.00 W 29* RF cable 1138.6249.00 W 41* RF cable 1138.6255.00 W 42* RF cable 1138.6261.00...
Page 159 Radio Unit R&S CRTU-RU List of Spare Parts for CRTU Radio Unit Current No. Designation Stock No. Electr. No. 1100 Screw 1096.4780.00 1110 Rear panel foot 1096.2493.00 1120 Instrument foot 1096.2506.00 1130 Carrying handle 1096.2670.00 1140 Tube hood 1096.2558.00 1140.0050.82...
Page 160 SSI + DIGITAL Board Control Control CRTC_LH TX-DSP Channel 2 Control Aud-DSP Control FIFO Module TX-IF Modu- TX-DSP MULTI´DSP Board Data lator Master AUC-Module FIFO Reference Board CRTU-RU Block Diagram Mod / Demod Layer 1 MAC / RLC 5.12 1140.0050.82...
Page 161: Drawings
Drawings of all Radio Unit R&S CRTU-R U Modules 1140.0050.82 5.13...
Page 168 Circuit Diagrams for Radio Unit R&S CRTU-RU 1140.0050.82...
Page 212 CRTU-B7 ..............3.15 FRONT Module ............3.17 IQIF BOARD ..............3.15 FRONT Module Controller ........3.19 CRTU-K2 ..............1.19 FRONTPANEL BOARD1........3.50 CRTU-RU MS software ..........4.8 FRONTPANEL BOARD2........3.51 CRTU-RU MS Software ..........4.8 Hard Disk ............3.23, 4.1 CRTU-Z3..............1.10 Instrument fan ............3.48 IQIF BOARD ............3.47...
Page 213 Index Radio Unit R&S CRTU-RU REFERENCE OSC. CRTU-B2 (Option) ....3.9 Spare parts (order) ............5.1 Options Spinwheel (FRONT Module)...........3.5 Installation.............. 4.10 STANDBY circuit (POWER SUPPLY)......3.6 List ................. 4.10 STANDBY/ON signal (POWER SUPPLY) ......3.6 Overtemperature protection (POWER SUPPLY) .... 3.6 Synchonization Clocks..........1.11 PCMCIA interface ............

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Rohde & Schwarz CRTU-RU Service Manual

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Performance Test

Performance Test

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List of Figures

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Adjustment

Manual Adjustment

Automatic Adjustment of Module Data

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Software Update/Installing Options

Software Update/Installing Options

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Front Module Controller Bios

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