Service Manual R&S FSH3 FSH CD ROM/FSH7.10 (D)/Manuals/Service_Manual_FSH
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User Manual: R&S FSH CD-ROM/FSH7.10 (D)/Manuals/Service_Manual_FSH
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Test and Measurement Division Service Manual Handheld Spectrum Analyzer R&S FSH 1145.5850.03 1145.5850.06 1145.5850.13 1145.5850.23 1145.5850.26 1145.5973.82-05- 1 Dear Customer, R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG. Trade names are trademarks of the owners. 1145.5973.82-05- 2 R&S FSH Contents Contents Safety Instructions Certificate of Quality Spare Parts Express Service List of R&S Representatives Contents of Manuals for Spectrum Analyzer R&S FSH Service and Repair 1 Performance Test .......................................................................................................................1.1 Test Instructions...............................................................................................................................1.1 Measuring Equipment and Accessories ........................................................................................1.1 Performance Test .............................................................................................................................1.2 Checking the frequency accuracy...............................................................................................1.2 Checking the level accuracy and the frequency response..........................................................1.3 Checking the accuracy of the RF attenuator ..............................................................................1.5 Checking the accuracy of the IF gain setting ..............................................................................1.6 Checking the displayed average noise floor ...............................................................................1.7 Checking the phase noise...........................................................................................................1.8 Checking the display linearity......................................................................................................1.9 Performance Test Tracking Generator............................................................................................1.11 Checking output level / frequency response .............................................................................1.11 Performance Test Report...............................................................................................................1.12 Performance Test Report Tracking Generator ............................................................................1.19 1145.5973.82 I.1 E-5 Contents R&S FSH 2 Adjustment ....................................................................................................................................2.1 Quick Verification .............................................................................................................................2.1 Measurement Equipment and Accessories for Quick Verification..............................................2.2 Verifying on/off functionality ........................................................................................................2.2 Verifying power and AF connections .........................................................................................2.2 Verifying the display ....................................................................................................................2.3 Verifying the level and noise .......................................................................................................2.3 Verify the tracking generator output level ...................................................................................2.4 Adjustment functions......................................................................................................2.4 Adjustment ........................................................................................................................................2.5 Adjustment Instructions ..............................................................................................................2.5 Measurement Equipment and Accessories ...................................................................................2.6 Adjusting the reference frequency accuracy...............................................................................2.6 Adjusting the level accuracy .......................................................................................................2.7 Frequency Response Correction ....................................................................................................2.8 1145.5973.82 I.2 E-5 R&S FSH Contents 3 Repair ..............................................................................................................................................3.1 Instrument Design and Functional Description ............................................................................3.1 Description of the block diagram ................................................................................................3.2 Attenuator ...................................................................................................................................3.2 RF to IF conversion.....................................................................................................................3.2 Tracking generator (Model 1145.5850.13/23/26 only) ................................................................3.4 RF/IF control ...............................................................................................................................3.4 Mainboard ...................................................................................................................................3.4 Power and battery management.................................................................................................3.4 Processing of measured data detectors .....................................................................................3.5 Resolution bandwidths (RBW)....................................................................................................3.5 Video bandwidths (VBW) ............................................................................................................3.5 Detectors.....................................................................................................................................3.6 Keypad control ............................................................................................................................3.6 Serial optical interface.................................................................................................................3.6 Power sensor ..............................................................................................................................3.6 Color LCD module ......................................................................................................................3.6 Module Replacement........................................................................................................................3.7 Overview of the modules ............................................................................................................3.9 Opening the instrument.............................................................................................................3.10 Closing the instrument ..............................................................................................................3.10 Replacing the battery ................................................................................................................3.11 Replacing the housing ..............................................................................................................3.12 Replacing the front unit for R&S FSH .......................................................................................3.13 Replacing the Color LCD Module .............................................................................................3.14 Replacing the RF/IF module .....................................................................................................3.15 Replacing the mainboard ..........................................................................................................3.16 Replacing the N connector........................................................................................................3.17 Replacing the binder and BNC connector block .......................................................................3.18 Replacing the power/audio connections ...................................................................................3.19 Replacing a cable from the cable set........................................................................................3.20 Troubleshooting .............................................................................................................................3.21 Overview of errors, causes, and possible corrective actions....................................................3.22 Troubleshooting problems in switching on the instrument ...........................................3.22 1145.5973.82 I.3 E-5 Contents R&S FSH 4 Software Updates / Installing Options ..............................................................................4.1 Installing New R&S FSH Software ..................................................................................................4.1 Installing the Options.......................................................................................................................4.1 5 Documents ....................................................................................................................................5.1 Shipping of Instrument and Ordering of Spare Parts ...................................................................5.1 Shipping of instrument ................................................................................................................5.1 Shipping of a module ..................................................................................................................5.1 Ordering spare parts ...................................................................................................................5.2 Refurbished modules ..................................................................................................................5.2 Return of defective replaced modules ........................................................................................5.2 Spare Parts........................................................................................................................................5.3 1145.5973.82 I.4 E-5 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. Safety-related symbols used on equipment and documentation from R&S: Observe operating instructions Weight indication for units >18 kg PE terminal Ground terminal 1. The unit may be used only in the operating conditions and positions specified by the manufacturer. Unless otherwise agreed, the following applies to R&S products: IP degree of protection 2X, pollution severity 2 overvoltage category 2, only for indoor use, altitude max. 2000 m. The unit may be operated only from supply networks fused with max. 16 A. Unless specified otherwise in the data sheet, a tolerance of ±10% shall apply to the nominal voltage and of ±5% to the nominal frequency. 2. For measurements in circuits with voltages Vrms > 30 V, suitable measures should be taken to avoid any hazards. (using, for example, appropriate measuring equipment, fusing, current limiting, electrical separation, insulation). 3. For permanently installed units without built-in fuses, circuit breakers or similar protective devices, the supply circuit must be fused such as to provide suitable protection for the users and equipment. 4. Prior to switching on the unit, it must be ensured that the nominal voltage set on the unit matches the nominal voltage of the AC supply network. If a different voltage is to be set, the power fuse of the unit may have to be changed accordingly. 5. If the unit has no power switch for disconnection from the AC supply, the plug of the connecting cable is regarded as the disconnecting device. In such cases it must be ensured that the power plug is easily reachable and accessible at all times (length of connecting cable approx. 2 m). Functional or electronic switches are not suitable for providing disconnection from the AC supply. If units without power switches are integrated in racks or systems, a disconnecting device must be provided at system level. Danger! Shock hazard Warning! Hot surfaces Ground Attention! Electrostatic sensitive devices require special care 6. Applicable local or national safety regulations and rules for the prevention of accidents must be observed in all work performed. Prior to performing any work on the unit or opening the unit, the latter must be disconnected from the supply network. Any adjustments, replacements of parts, maintenance or repair may be carried out only by authorized R&S technical personnel. Only original parts may be used for replacing parts relevant to safety (eg power switches, power transformers, fuses). A safety test must be performed after each replacement of parts relevant to safety. (visual inspection, PE conductor test, insulationresistance, leakage-current measurement, functional test). 7. Ensure that the connections with information technology equipment comply with IEC950 / EN60950. NiMH batteries must not be exposed to high temperatures or fire. Keep batteries away from children. If the battery is replaced improperly, there is danger of explosion. Only replace the battery by R&S type (see spare part list). NiMH batteries are suitable for environmentallyfriendly disposal or specialized recycling. Dispose them into appropriate containers, only. Do not short-circuit the battery. 8. 9. Equipment returned or sent in for repair must be packed in the original packing or in packing with electrostatic and mechanical protection. 10. Electrostatics via the connectors may damage the equipment. For the safe handling and operation of the equipment, appropriate measures against electrostatics should be implemented. Safety Instructions 11. The outside of the instrument is suitably cleaned using a soft, lint-free dustcloth. Never use solvents such as thinners, acetone and similar things, as they may damage the front panel labeling or plastic parts. 12. Any additional safety instructions given in this manual are also to be observed. Certified Quality System Certified Environmental System ISO 9001 ISO 14001 DQS REG. NO 1954 QM DQS REG. NO 1954 UM Qualitätszertifikat Certificate of quality Certificat de qualité Sehr geehrter Kunde, Dear Customer, Cher client, Sie haben sich für den Kauf eines Rohde & Schwarz-Produktes entschieden. Hiermit erhalten Sie ein nach modernsten Fertigungsmethoden hergestelltes Produkt. Es wurde nach den Regeln unseres Qualitätsmanagementsystems entwickelt, gefertigt und geprüft. Das Rohde & SchwarzQualitätsmanagementsystem ist u.a. nach ISO 9001 und ISO14001 zertifiziert. You have decided to buy a Rohde & Schwarz product. You are thus assured of receiving a product that is manufactured using the most modern methods available. This product was developed, manufactured and tested in compliance with our quality management system standards. The Rohde & Schwarz quality management system is certified according to standards such as ISO9001 and ISO14001. Vous avez choisi d'acheter un produit Rohde & Schwarz. Vous disposez donc d'un produit fabriqué d'après les méthodes les plus avancées. Le développement, la fabrication et les tests respectent nos normes de gestion qualité. Le système de gestion qualité de Rohde & Schwarz a été homologué, entre autres, conformément aux normes ISO 9001 et ISO14001. 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. 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Technology Centre 8/F, HITC Building 239 Xuan Thuy Road Cau Giay, Tu Liem Hanoi West Indies siehe / see Mexico +84 (4) 834 61 86 +84 (4) 834 61 88 svnhn@schmidtgroup.com R&S FSH Manuals Contents of Manual for Spectrum Analyzer R&S FSH Service Manual - Instrument The Service Manual - Instrument describes how to check compliance with rated specifications, as well as instrument function, repair, troubleshooting and fault elimination. It contains all information required when repairing the R&S FSH by replacing modules. This Service Manual consists of four chapters and an annex (chapter 5) that describes how to ship the instrument and to order spare parts. Chapter 1 provides all the information necessary to check for compliance with rated specifications. The required test equipment is also specified. Chapter 2 describes the manual adjustment of the calibration source and of the frequency accuracy as well as the automatic adjustment of individual module data following module replacement. Chapter 3 describes the design as well as simple measures for repair and fault diagnosis, including in particular the replacement of modules. Chapter 4 contains information about extensions and modifications by installing instrument software and retrofitting options. Chapter 5 describes how to ship the instrument and order spare parts, and contains spare parts lists. Operating Manual The Operating Manual provides information about the technical specifications, the controls and connectors on the front and rear panel, required steps for placing the instrument into operation, the basic operating concept, as well as manual and remote control. Typical measurement tasks are explained in detail using the functions of the user interface and program examples. The Operating Manual also provides useful information on preventive maintenance and fault diagnosis by means of warnings and error messages output by the unit. Quick Start Manual The Quick Start Manual provides information about typical measurement tasks, the basic operation concept, as well as manual and remote control. Each of these items is explained in detail using the functions of the user interface and program examples. 1145.5973.82 0.1 E-4 Manuals R&S FSH Service and Repair If your equipment requires service or repair or if you want to order spare parts and modules, please contact your Rohde & Schwarz support center or our spare parts express service. Rohde & Schwarz representatives and the address of our spare parts express service are listed in the front section of this service manual. You will need to provide the following information in order for us to respond to your inquiries quickly and accurately and to determine whether the warranty for your instrument is still valid: • Instrument model • Serial number • Firmware version • Detailed error description in case of repair • Contact partner for checkbacks Rohde & Schwarz offers the following calibrations: • Calibration on R&S-type test systems. The calibration documentation meets the requirements of the quality management system ISO 9000. • Calibration at an R&S calibration center approved by the German Calibration Service (DKD). The calibration documentation consists of the DKD calibration certificate. Refer to Chapter 5 for a detailed description of how to ship the instrument and to order spare parts. 1145.5973.82 0.2 E-4 R&S FSH Test Instructions 1 Performance Test Test Instructions • The rated specifications of the analyzer are tested after a warm-up time of at least 15 minutes. Only by adhering to this requirement can compliance with the guaranteed data be ensured. • Values specified in the following sections are not guaranteed. Only the technical specifications provided on the data sheet are binding. • The values specified in the data sheet are the guaranteed limits. • Inputs for settings during measurements are shown as following: [] Press a key on the front panel, eg [SPAN] [ ] Press a softkey, e.g. [MARKER -> PEAK]. [ ] Enter a value and terminate by entering the unit, e.g. [12 kHz]. Successive entries are separated by [:], e.g. [ BW : MANUAL RES BW : 3 kHz ]. Measuring Equipment and Accessories Item Type of equipment Specifications recommended 1 Signal generator Frequency: R&S°FSH3 R&S°FSH6 Equipment R&S order recommended no. 10 MHz to 3 GHz 10 MHz to 6 GHz R&S SML03 R&S SMT06 1090.3000.13 1039.2000.06 Use Frequency response Frequency accuracy of reference oscillator Uncertainty of frequency: 0.1 ppm Phase noise at 500 MHz: < -100 dBc (1Hz) @ 10 kHz < -110 dBc (1Hz) @ 100 kHz < -130 dBc (1Hz) @ 1 MHz 2 6-dB divider (power splitter) Weinschel 1506A Frequency response 3 Power meter R&S NRVD 0857.8008.02 Frequency response 4 Power sensor 1 MHz to 6 GHz RSS ≤ 0.8% Meter noise ≤ 20 pW R&S NRV-Z4 0828.3618.02 Frequency response 5 N cable Attenuation < 1 dB to 6 GHz Tracking generator output level 6 50-Ω termination 1 MHz to 6 GHz Noise display Return loss ≤ -10 dB 1145.5973.82 1.1 E-5 Performance Test R&S FSH Performance Test Checking the frequency accuracy Test equipment: Signal generator (refer to section "Measurement Equipment and Accessories", item 1) Test setup: ¾ Connect the signal generator to the RF input of the R&S FSH. Signal generator settings: - Frequency - Level R&S FSH settings: - [ PRESET ] - [ FREQ : 1 GHz ] - [ SPAN : 100 kHz ] - [ BW : MANUAL RES BW : 10 kHz ] - [ MARKER : MARKER MODE : FREQ COUNT ] Measurement: ¾ Read out the frequency value (Count:) of the marker. 1 GHz -30 dBm Nominal frequency: ............................................................ 1.0 GHz ± 1 kHz Note: 1145.5973.82 The frequency of the reference oscillator can be adjusted by means of a service function (refer to Chapter 2 "Adjustment"). 1.2 E-5 R&S FSH Performance Test Checking the level accuracy and the frequency response Test equipment: - Signal generator (refer to section "Measurement Equipment and Accessories", item 1) - Power meter (refer to section "Measurement Equipment and Accessories", item 3) - Power sensor (refer to s ection "Measurement Equipment and Accessories", item 4) - 6-dB p ower splitter (refer to section "Measurement Equipment and Accessories", item 2) Determining the level accuracy at 100 MHz Test setup: ¾ Connect the power sensor (item 4) to the power meter and execute function ´ZERO´ when there is no signal applied to the power sensor. ¾ Connect the RF output of the signal generator to the input of the divider. ¾ Connect output 1 of the divider to the power sensor / power meter. ¾ Connect output 2 of the divider to the RF input of the R&S FSH. Signal generator settings: - Frequency - Level 100 MHz 6 dBm ¾ Determine the output power of the signal generator with the power meter. Adjust the output power of the generator until the power meter shows 0 dBm. R&S FSH settings: - [ PRESET ] - [ FREQ : 100 MHz ] - [ AMPT: 0 dBm ] - [ SPAN : 100 kHz ] - [ BW : MANUAL RES BW : 10 kHz ] - [ TRACE : DETECTOR : RMS ] ¾ Set the marker to the peak of the signal. - [ MARKER: SET MARKER: PEAK ] Evaluation: The difference between the signal levels measured with the power meter and the level reading of the marker reflects the absolute level error of the R&S FSH. It can be calculated as: Level error100 MHz = L - Lpowermeter 1145.5973.82 1.3 E-5 Performance Test R&S FSH Checking the frequency response For the measurement of the frequency response, the value at 100 MHz for each reference level setting is used as the reference. The reference level influences the RF attenuation (RF attenuation = +10 dBm + reference level). Test setup: ¾ Connect the RF output of the signal generator to the input of the divider. ¾ Connect output 1 of the divider to the power sensor / power meter. ¾ Connect output 2 of the divider to the RF input of the SA.. Signal generator settings: R&S FSH settings: - Frequency {fin} * - Level -4 dBm Determine the output power of the signal generator with the power meter. Adjust the output power of the generator until the power meter shows -10 dBm. - [ PRESET ] - [ AMPT : Ref_Lev*) ] - [ SPAN : 100 kHz ] - [ BW : MANUAL RES BW : 10 kHz ] - [ TRACE : DETECTOR : RMS ] - [ FREQ : CENTER : {fin} * ] - [ SETUP : Hardware Setup: Low Noise] *) Refer to table under “Performance Test Report” for values of Ref_Lev and fin. If the a RF preamplifier is installed, its frequency response has to be checked also. To switch it on please enter: Reference measurement: - [ SETUP : Hardware Setup: Preamp: ON ] ¾ Determine signal level Lpowermeter. ¾ Set the marker to the peak of the signal. - [ MARKER: SET MARKER: PEAK ] The signal level L is displayed by the level reading of the marker. Ref100MHz = L - Lpowermeter Measurement Signal generator settings: Power meter settings: R&S FSH settings: - Frequency {fin} Refer to table under “Performance Test Report” for values of {fin}. Determine the signal level Lpowermeter. To achieve higher accuracy, compensating the frequency response of the power sensor is recommended. - [ FREQ : {fin} ] Refer to table under “Performance Test Report” for values of {fin}. Evaluation: ¾ Set the marker to the peak of the signal. - [ MARKER: SET MARKER: PEAK ] The signal level L is displayed by the level reading of the marker. The frequency response can be calculated as: Frequency response = L - Lpowermeter - Ref100 MHz 1145.5973.82 1.4 E-5 R&S FSH Performance Test Checking the accuracy of the RF attenuator Test principle: Test equipment: The RF attenuator of the R&S FSH can be switched from 0 to 30 dB in 10-dB increments by changing the reference level (RF attenuation = +10 dBm + reference level). Signal generator (refer to section "Measurement Equipment and Accessories", item 3) Frequency 100 MHz Maximum level ≥ 6 dBm Test setup: ¾ Connect the RF output of the signal generator to the input of the divider. ¾ Connect output 1 of the divider to the power sensor / power meter. ¾ Connect output 2 of the divider to the RF input of the R&S FSH. Signal generator settings: - Frequency R&S FSH settings: - [ PRESET ] - [ FREQ : 100 MHz ] - [ SPAN : 10 kHz ] - [ BW : MANUAL RES BW : 1 kHz ] - [ BW : MANUAL VIDEO BW : 100 Hz ] - [ TRACE : DETECTOR : RMS ] - [ AMPT: 0 dBm ] - [ SETUP : Hardware Setup: Low Noise ] ¾ Set the marker to the peak of the signal. [ MARKER: SET MARKER: PEAK ] Reference measurement: 100 MHz - Level -14 dBm ¾ Determine the output power of the signal generator with the power meter. Adjust the output power of the signal generator until the power meter shows -20 dBm ± 0.2 dB. The signal level L is displayed by the level reading of the marker. Ref0dBm = L - Lpowermeter Measurement Signal generator settings: - Frequency - Level 100 MHz Ref_Lev *) – 14 dB *) Refer to table under “Performance Test Report” for values of {Ref_Lev}. ¾ Determine the output power of the signal generator with the power meter. Adjust the output power of the generator until the power meter shows the value Ref_Lev – 10 dB. R&S FSH settings: - [ AMPT : {Ref_Lev} ] - [ MARKER: SET MARKER: PEAK ] Evaluation: The signal level L is displayed by the level reading of the marker. The difference between the level inaccuracy of the R&S FSH and Ref0dBm (at 10 dB RF-Att) is the uncertainty of the RF attenuation: IF-Gainaccuracy = (L - Lpowermeter ) – Ref0dBm 1145.5973.82 1.5 E-5 Performance Test R&S FSH Checking the accuracy of the IF gain setting Test principle: The IF gain of the R&S FSH can be switched from 0 to 15 dB by changing the reference level. Test equipment: - Test setup: ¾ Connect the RF output of the signal generator to the input of the divider. Signal generator (refer to section "Measurement Equipment and Accessories", item 3) Frequency 100 MHz Maximum level ≥ -10 dBm ¾ Connect output 1 of the divider to the power sensor / power meter. ¾ Connect output 2 of the divider to the RF input of the SA. Signal generator settings: - Frequency - Level 100 MHz -4 dBm ¾ Determine the output power of the signal generator with the power meter. Adjust the output power of the generator until the power meter shows -10 dBm ± 0.2 dB. R&S FSH settings: - [ PRESET ] - [ FREQ: 100 MHz ] - [ SPAN : 10 kHz ] - [ BW : MANUAL RES BW: 1 kHz ] - [ BW : MANUAL VIDEO BW : 100 Hz ] - [ TRACE : DETECTOR : RMS ] - [ AMPT : Ref_Lev *)] *) Refer to table under “Performance Test Report” for values of {Ref_Lev}. Reference measurement: ¾ Set the marker to the peak of the signal. - [ MARKER: SET MARKER: PEAK ] The signal level L is displayed by the level reading of the marker. Ref-10dBm = L - Lpowermeter Measurement Signal generator settings: - Frequency - Level 100 MHz Ref_Lev + 6 dB ¾ Determine the output power of the signal generator with the power meter. Adjust the output power of the generator until the power meter shows the value Ref_Lev ± 0.2 dB. R&S FSH settings: - [ AMPT : {Ref_Lev} ] *) Refer to table under “Performance Test Report” for values of Ref_Lev. - [MARKER: SET MARKER: PEAK ] Evaluation: The signal level L is displayed by the level reading of the marker. The difference between the level inaccuracy of the R&S FSH and Ref10dBm (at 0 dB IF gain) is the uncertainty of the IF gain: IF-Gainaccuracy = (L - Lpowermeter ) - Ref-10dBm 1145.5973.82 1.6 E-5 R&S FSH Performance Test Checking the displayed average noise floor Test equipment: 50-Ω termination (refer to section "Measurement Equipment and Accessories", item 6) Test setup: ¾ Terminate the RF input of the R&S FSH with 50 Ω. R&S FSH settings: - [ PRESET ] - [ SPAN : ZERO SPAN ] - [ Manual Res BW : 1 kHz ] - [ Manual Video BW : 10 Hz ] - [ TRACE : TRACE MODE: AVERAGE ] - [ AMPT : -30 dBm ] - [ FREQ : {fn} ] Refer to table under “Performance Test Report” for values of fn. Measurement: ¾ Read out the marker level. Evaluation: The displayed average noise floor is displayed by the level reading of the marker. 1145.5973.82 1.7 E-5 Performance Test R&S FSH Checking the phase noise Test equipment: Signal generator (refer to section "Measurement Equipment and Accessories", item 3) Frequency 500 MHz Level ≥ 0 dBm Phase noise at 500 MHz: < -100 dBc (1Hz) @ 10 kHz < -110 dBc (1Hz) @ 100 kHz < -120 dBc (1Hz) @ 1 MHz Test setup: ¾ Connect the RF output of the signal generator to the RF input of the R&S FSH. Signal generator settings: - Frequency - Level 500 MHz 8 dBm *) *) The overrange of the AD converter is used for higher dynamic range. R&S FSH settings: - [ PRESET ] - [ FREQ : 500 MHz ] - [ AMPT : 0 dBm ] - [ SPAN : {span} ] - [ BW : RBW MANUAL : {RBW} ] Depending on the offset, refer to the table below for values of RBW and span. - [ TRACE : TRACE MODE: AVERAGE ] - Marker to peak [MARKER: SET MARKER: PEAK ] - Delta marker to {offset} [MARKER: DELTA: {offset}: kHz ] - Set marker mode to noise measurement [MARKER: MARKER MODE: NOISE ] Evaluation: The phase noise is displayed in the marker field by the reading Delta [dBc/Hz]´. Phase noise measurement settings 1145.5973.82 Offset Span RBW 30 kHz 100 kHz 1 kHz 100 kHz 220 kHz 10 kHz 1 MHz 2.2 MHz 100 kHz 1.8 E-5 R&S FSH Performance Test Checking the display linearity Test equipment: - Signal generator (refer to section "Measurement Equipment and Accessories", item 1) - Power meter (refer to section "Measurement Equipment and Accessories", item 3) - Power sensor (refer to section "Measurement Equipment and Accessories", item 4) - 6-dB power splitter (refer to section "Measurement Equipment and Accessories", item 2) Test setup: ¾ Connect the power sensor (item 4) to the power meter and execute function ´ZERO´ when there is no signal applied to the power sensor. ¾ Connect the RF output of the signal generator to the input of the divider. ¾ Connect output 1 of the divider to the power sensor / power meter. ¾ Connect output 2 of the divider to the RF input of the R&S FSH. 1st Measurement 0 to 30 dB below reference level Signal generator settings: - Frequency - Level 100 MHz + 6 dBm ¾ Determine the output power of the signal generator with the power meter. Adjust the output power of the generator until the power meter shows 0 dBm. R&S FSH settings: - [ PRESET ] - [ AMPT: 0 dBm ] - [ FREQ: 100 MHz ] - [ SPAN : 10 kHz ] - [ Manual Res BW : 1 kHz ] - [ Manual SWPTime : 1 s ] - [ TRACE : DETECTOR : RMS ] Reference measurement: ¾ Set the marker to the peak of the signal. - [MARKER: SET MARKER: PEAK ] The signal level L is displayed by the level reading of the marker. Ref0dBm = L - Lpowermeter Signal generator settings: - Frequency - Level 100 MHz Sig_Lev + 6 dB Refer to table under “Performance Test Report” for values of {Sig_Lev}. ¾ Determine the output power of the signal generator with the power meter. Adjust the output power of the generator until the power meter shows the value of {Sig_Lev}. 1145.5973.82 1.9 E-5 Performance Test Evaluation: R&S FSH The signal level L is displayed by the level reading of the marker. The difference between the level inaccuracy of the R&S FSH and Ref0dBm is the uncertainty of the display linearity: Linearityuncertainty = (L - Lpowermeter ) – Ref0dBm 2nd Measurement 30 to 50 dB below reference level Because the sensitivity of the power meter is limited, the internal RF attenuator of the Galaxy is used to increase the dynamic range of the input signal. R&S FSH settings: - [ AMPT: 20 dBm ] Signal generator settings: - Frequency - Level 100 MHz - 4 dBm ¾ Determine the output power of the signal generator with the power meter. Adjust the output power of the generator until the power meter shows -10 dBm. Reference measurement: ¾ Set the marker to the peak of the signal. - [MARKER: SET MARKER: PEAK ] The signal level L is displayed by the level reading of the marker. With the result of the 1st linearity measurement, a new correction factor is to be calculated. “Linearityuncertainty (-30dB)” is the measured uncertainty of the R&S FSH linearity at 30 dB below reference level. Ref20dBm = (L - Lpowermeter ) – Linearityuncertainty (-30dB) Signal generator settings: - Frequency - Level 100 MHz Sig_Lev + 6 dB Refer to table under “Performance Test Report” for values of {Sig_Lev}. ¾ Determine the output power of the signal generator with the power meter. Adjust the output power of the generator until the power meter shows the value Sig_Lev ± 0.2 dB. Evaluation: The signal level L is displayed by the level reading of the marker. The difference between the level inaccuracy of the R&S FSH and Ref20dBm is the uncertainty of the display linearity: Linearityuncertainty = (L - Lpowermeter ) – Ref20dBm 1145.5973.82 1.10 E-5 R&S FSH Performance Test Tracking Generator Performance Test Tracking Generator (Model 1145.5973.13, 1145.5973.23 or 1145.5973.26 only) Checking output level / frequency response Test equipment: - N cable (refer to section "Measurement Equipment and Accessories“, item 5) Frequency up to 3 GHz Maximum attenuation < 0.2 dB Test setup: ¾ Connect the tracking generator output to the RF input of the R&S FSH. R&S FSH settings: - [ PRESET ] - [ MEAS: TRACKING GENERATOR ] - [ AMPT : REF: 10 dB ] - [ FREQ : START FREQ 10 MHz ] In the model 1145.5973.23 the output level of the tracking generator can be set to 0 dBm. Check the output level also with this setting: - [ PRESET ] - [ MEAS: TRACKING GENERATOR ] - [ Output Level : 0 dBm ] - [ AMPT : REF: 10 dB ] In the FSH6 the output level of the tracking generator is measured with two different frequency settings : 1) - [ FREQ : START FREQ 10 MHz ] - [ FREQ : STOP FREQ 3 GHz ] 2) - [ FREQ : START FREQ 3 GHz ] - [ FREQ : STOP FREQ 6 GHz ] Measurement: Tune the marker to the maximum level of the trace. - [MARKER: ] Read out the marker level. Tune the marker to the minimum value of the trace. Read out the marker level. 1145.5973.82 1.11 E-5 Performance Test Report R&S FSH Performance Test Report Table 1-1 Performance Test Report ROHDE & SCHWARZ Performance Test Report Spectrum Analyzer Version 2 April 2004 Model ( ): Order number: Serial number: Test person: Date: Sign: Characteristic Frequency accuracy Included in Min. value Actual value Max. value Unit 0.999999 ________ 1.000001 GHz -0.5 ________ +0.5 dB Measurement uncertainty Page 1.2 Reference oscillator Level accuracy Page 1.3 at 100 MHz with Ref_Lev = 0 dBm 1145.5973.82 1.12 E-5 R&S FSH Characteristic Frequency response Performance Test Report Included in Min. value Actual value Max. value Unit -1 ________ +1 dB Measurement uncertainty Page 1.3 with Ref_Lev = 20 dBm ffresp 10 MHz dB Reference 100 MHz 500 MHz -1 ________ +1 dB 1000 MHz -1 ________ +1 dB 1500 MHz -1 ________ +1 dB 2000 MHz -1 ________ +1 dB 2500 MHz -1 ________ +1 dB 2990 MHz -1 ________ +1 dB 3500 MHz -1 ________ +1 dB 4000 MHz -1 ________ +1 dB 4500 MHz -1 ________ +1 dB 5000 MHz -1 ________ +1 dB 5500 MHz -1 ________ +1 dB 5990 MHz -1 ________ +1 dB -1 ________ +1 dB R&S°FSH6 only : Frequency response Page 1.3 with Ref_Lev = 10 dBm ffresp 10 MHz dB Reference 100 MHz 500 MHz -1 ________ +1 dB 1000 MHz -1 ________ +1 dB 1500 MHz -1 ________ +1 dB 2000 MHz -1 ________ +1 dB 2500 MHz -1 ________ +1 dB 2990 MHz -1 ________ +1 dB 3500 MHz -1 ________ +1 dB 4000 MHz -1 ________ +1 dB 4500 MHz -1 ________ +1 dB 5000 MHz -1 ________ +1 dB 5500 MHz -1 ________ +1 dB 5990 MHz -1 ________ +1 dB R&S°FSH6 only : 1145.5973.82 1.13 E-5 Performance Test Report Characteristic Frequency response Included in R&S FSH Min. value Actual value Max. value Unit -1 ________ +1 dB Measurement uncertainty Page 1.3 with Ref_Lev = 0 dBm ffresp 10 MHz dB Reference 100 MHz 500 MHz -1 ________ +1 dB 1000 MHz -1 ________ +1 dB 1500 MHz -1 ________ +1 dB 2000 MHz -1 ________ +1 dB 2500 MHz -1 ________ +1 dB 2990 MHz -1 ________ +1 dB 3500 MHz -1 ________ +1 dB 4000 MHz -1 ________ +1 dB 4500 MHz -1 ________ +1 dB 5000 MHz -1 ________ +1 dB 5500 MHz -1 ________ +1 dB 5990 MHz -1 ________ +1 dB -1 ________ +1 dB R&S°FSH6 only : Frequency response Page 1.3 with Ref_Lev = -10 dBm ffresp 10 MHz dB Reference 100 MHz 500 MHz -1 ________ +1 dB 1000 MHz -1 ________ +1 dB 1500 MHz -1 ________ +1 dB 2000 MHz -1 ________ +1 dB 2500 MHz -1 ________ +1 dB 2990 MHz -1 ________ +1 dB 3500 MHz -1 ________ +1 dB 4000 MHz -1 ________ +1 dB 4500 MHz -1 ________ +1 dB 5000 MHz -1 ________ +1 dB 5500 MHz -1 ________ +1 dB 5990 MHz -1 ________ +1 dB R&S°FSH6 only : 1145.5973.82 1.14 E-5 R&S FSH Characteristic Frequency response Performance Test Report Included in Min. value Actual value Max. value Unit -1 ________ +1 dB Measurement uncertainty Page 1.3 with PreAmp = ON (only if PreAmp is implemented) Ref_Lev = -15 dBm ffresp 10 MHz 100 MHz Reference dB 500 MHz -1 ________ +1 dB 1000 MHz -1 ________ +1 dB 1500 MHz -1 ________ +1 dB 2000 MHz -1 ________ +1 dB 2500 MHz -1 ________ +1 dB 2990 MHz -1 ________ +1 dB 3500 MHz -1 ________ +1 dB 4000 MHz -1 ________ +1 dB 4500 MHz -1 ________ +1 dB 5000 MHz -1 ________ +1 dB 5500 MHz -1 ________ +1 dB 5990 MHz -1 ________ +1 dB -1 ________ +1 dB R&S°FSH6 only : Frequency response Page 1.3 with PreAmp = ON (only if PreAmp is implemented) Ref_Lev = -25 dBm ffresp 10 MHz dB Reference 100 MHz 500 MHz -1 ________ +1 dB 1000 MHz -1 ________ +1 dB 1500 MHz -1 ________ +1 dB 2000 MHz -1 ________ +1 dB 2500 MHz -1 ________ +1 dB 2990 MHz -1 ________ +1 dB 3500 MHz -1 ________ +1 dB 4000 MHz -1 ________ +1 dB 4500 MHz -1 ________ +1 dB 5000 MHz -1 ________ +1 dB 5500 MHz -1 ________ +1 dB 5990 MHz -1 ________ +1 dB R&S°FSH6 only : 1145.5973.82 1.15 E-5 Performance Test Report Characteristic Min. value Actual value Max. value 0 dB / -10 dBm -0.5 ________ +0.5 dB 10 dB / 0 dBm - Reference - - 20 dB / 10 dBm -0.5 ________ +0.5 dB 30 dB / 20 dBm -0.5 ________ +0.5 dB -0.5 ________ +0.5 dB -10 dBm - Reference - - -15 dBm -0.5 ________ +0.5 dB -20 dBm -0.5 ________ +0.5 dB -25 dBm -0.5 ________ +0.5 dB 9.9 MHz - ________ -105 dBm 101 MHz - ________ -105 dBm 501 MHz - ________ -105 dBm 1001 MHz - ________ -105 dBm 1501 MHz - ________ -105 dBm 2001 MHz - ________ -105 dBm 2501 MHz - ________ -105 dBm 2999 MHz - ________ -105 dBm 3501 MHz - ________ -103 dBm 4001 MHz - ________ -103 dBm 4501 MHz - ________ -103 dBm 4999 MHz - ________ -103 dBm 5501 MHz - ________ -96 dBm 5999 MHz - ________ -96 dBm Attenuator accuracy Included in R&S FSH Unit Measurement uncertainty Page 1.5 RF_Att / Ref_Lev : PreAmp = ON (only if PreAmp is implemented) 0 dB / -15 dBm IF gain Page 1.5 Switching accuracy Reference level Displayed average Page 1.7 Noise floor fnoise: R&S°FSH6 only : 1145.5973.82 1.16 E-5 R&S FSH Characteristic Performance Test Report Min. value Actual value Max. value Unit 9.9 MHz - ________ -120 dBm 101 MHz - ________ -120 dBm 501 MHz - ________ -120 dBm 1001 MHz - ________ -120 dBm 1501 MHz - ________ -120 dBm 2001 MHz - ________ -120 dBm 2499 MHz - ________ -120 dBm 2999 MHz - ________ -115 dBm 3501 MHz - ________ -115 dBm 4001 MHz - ________ -115 dBm 4501 MHz - ________ -115 dBm 4999 MHz - ________ -115 dBm 5501 MHz - ________ -105 dBm 5999 MHz - ________ -105 dBm 30 kHz - ________ -85 dBc (1Hz) 100 kHz - ________ -100 dBc (1Hz) 1 MHz - ________ -120 dBc (1Hz) Displayed average Included in Measurement uncertainty Page 1.7 Noise floor with PreAmp = ON (only if PreAmp is implemented) fnoise: R&S°FSH6 only : Phase noise Page 1.8 at 500 MHz Offset frequency: 1145.5973.82 1.17 E-5 Performance Test Report Characteristic Min. value Actual value Max. value Unit 0 dBm - Reference - - -5 dBm -0.2 ________ +0.2 dB -10 dBm -0.2 ________ +0.2 dB -15 dBm -0.2 ________ +0.2 dB -20 dBm -0.2 ________ +0.2 dB - 25 dBm -0.2 ________ +0.2 dB - 30 dBm -0.2 ________ +0.2 dB -10 dBm - Reference - - -15 dBm -0.3 ________ +0.3 dB -20 dBm -0.3 ________ +0.3 dB - 25 dBm -0.3 ________ +0.3 dB - 30 dBm -0.3 ________ +0.3 dB Display linearity Included in R&S FSH Measurement uncertainty Page 1.9 0 to -30 dB Reference level: 0 dBm Sig_Lev : Display linearity Page 1.9 -30 to -50 dB Reference level: 20 dBm Sig_Lev : 1145.5973.82 1.18 E-5 R&S FSH Performance Test Report Tracking Generator Performance Test Report Tracking Generator (model 1145.5850.13, 1145.5850.23 or 1145.5850.26 only) Table 1-2 Performance Test Report ROHDE & SCHWARZ Performance Test Report Option -B9 Version 2 April 2004 Serial number: Test person: Date: Sign: Characteristic Min. value Actual value Max. value Unit Maximum value -3 ________ +5 dB Minimum value -7 ________ -1 dB Maximum value -3 ________ +5 dB Minimum value -7 ________ -1 dB Maximum value -2 ________ +6 dB Minimum value -5 ________ +4 dB Maximum value 2 ________ 11 dB Minimum value -11 ________ 6 dB R&S°FSH3: Included in Measurement uncertainty Page 1.11 Level accuracy output level: -20 dBm R&S°FSH3: Page 1.11 Level accuracy output level: 0 dBm (model 1145.5850.23 only) R&S°FSH6: Page 1.11 Level accuracy 10 MHz to: 3 GHz 3 GHz to 6 GHz 1145.5973.82 1.19 E-5 R&S FSH Quick Verification 2 Adjustment This chapter describes the adjustment of the software-controlled module data following the replacement of modules. Adjustments can be performed only by using the adjustment program that is available from the R&S Service Board on the R&S Internet site. Using this program prevents mistakes in the calibration data. The R&S FSH permits the following manual adjustments: • • Adjustment of the 10-MHz reference oscillator that determines the frequency accuracy of the R&S FSH. Adjustment of the level accuracy of the R&S FSH for different attenuator settings. Adjustment enables you to maintain and restore the data integrity of the instrument. Manual adjustments must be performed at an ambient temperature between +20°C and +30°C after the instrument has warmed up. After the adjustments have been performed, the R&S FSH is ready for use and offers full data integrity. This can be verified by performing the Performance Test as described in Chapter 1. Verifying the functionality of the R&S FSH is recommended before you start performing adjustments or the performance test. The verification procedure is described in the following section, ”Quick Verification”. Quick Verification The quick verification procedure verifies hardware functionality before full testing can start. Testing of the following is recommended: • On/off functionality • Connections of the power adapter and the AF output • Display • Level and noise 1145.5973.82 2.1 E-4 Measurement Equipment and Accessories for Quick Verification R&S FSH Measurement Equipment and Accessories for Quick Verification The quick verification procedure requires a very limited amount of equipment. Item Type of equipment Specifications recommended Equipment R&S order recommended no. Use 1 Signal generator Frequency: R&S SML Level 2 N-cable Attenuation: 10 MHz to 3 GHz < 0.2 dB to 3 GHz Tracking generator output level Verifying on/off functionality Test equipment None R&S FSH settings Switch instrument ON. Measurement ¾ Verify that the instrument switches ON. Verifying power and AF connections Test equipment None Accessories AC power adapter Headphone R&S FSH settings Switch instrument ON. Connect the AC power supply. Reference measurement ¾ Verify in the display that the battery symbol changes to a power plug. R&S FSH settings Connect the headphone. - [ Marker : MARKER DEMOD : AM ] Reference measurement ¾ Verify that a noise signal is heard on the headphone. 1145.5973.82 2.2 E-4 R&S FSH Measurement Equipment and Accessories for Quick Verification Verifying the display Test equipment None R&S FSH settings Switch instrument ON. Reference measurement ¾ Check the display for disturbance. Verifying the level and noise Test principle The RF attenuator of the R&S FSH can be switched from 0 to 30 dB by changing the reference level in the instrument. Test equipment - Test setup ¾ Connect the RF output of the signal generator to the input of the R&S FSH. Signal generator settings - Frequency - Level Signal generator (refer to section "Measurement Equipment and Accessories for Quick Verification", item 1). Frequency 100 MHz Maximum level ≥ 6 dBm 100 MHz - 20 dBm R&S FSH settings - [ PRESET ] - [ FREQ : 100 MHz ] - [ SPAN : 10 kHz ] - [ BW : RES BW MANUAL : 1 kHz ] - [ BW : VIDEO BW MANUAL : 100 Hz ] - [ TRACE : DETECTOR : RMS ] - [ AMPT: 0 dBm ] Verification ¾ Read the level and verify that it shows -20 dBm +/- 2 dB. ¾ Verify that the noise level in the display is < - 60 dBm. Check 30 dB attenuation Change signal generator setting Change R&S FSH setting Verification - Level - [ AMPT : -10 dBm] Check 10 dB attenuation Change signal generator setting Change R&S FSH setting Verification - Level - [ AMPT : 10 dBm ] Check 0 dB attenuation Change signal generator setting Change R&S FSH setting Verification - Level - [ AMPT : 20 dBm ] 1145.5973.82 -30 dBm ¾ Read the level and verify that it shows -30 dBm +/- 2 dB. -10 dBm ¾ Read the level and verify that it shows -10 dBm +/- 2 dB. 0 dBm ¾ Read the level and verify that it shows 0 dBm +/- 2 dB. 2.3 E-4 Measurement Equipment and Accessories for Quick Verification R&S FSH Verify the tracking generator output level Test principle The generator output must be connected to the RF input and verified. Test equipment None Test setup ¾ Connect the generator output of the R&S FSH to the RF input. R&S FSH settings - [ PRESET ] - [ MEAS : TRACKING GEN :] Verification ¾ Verify that the level of the sweep shows 0 dB +5 /-7 dB. ¾ Following internal calibration, verify that the level shows 0 +/-1 dB. Adjustment functions Caution: Only qualified personnel should carry out the re-alignment since any change substantially influences the measurement accuracy of the instrument. For this reason, the calibration program is available only on the R&S Service Board. 1145.5973.82 2.4 E-4 R&S FSH Adjustment Adjustment This section describes the measurement equipment and accessories required for the manual adjustment of the R&S FSH, the appropriate preparations of the equipment, and the individual adjustments. An adjustment program provides the instructions for the input settings. Adjustment Instructions • The adjustment of the analyzer must be performed after a warm-up time of at least 30 minutes. Only by adhering to this requirement can compliance with the guaranteed data be ensured. • Inputs for setting the R&S FSH during adjustment will be programmed automatically. 1145.5973.82 2.5 E-4 Measurement Equipment and Accessories R&S FSH Measurement Equipment and Accessories Item Type of equipment Specifications recommended Equipment R&S order recommended no. Use 1 Signal generator Frequency: 10 MHz to 3 GHz Uncertainty of frequency: 0.1 ppm R&S SML Frequency accuracy of reference oscillator Phase noise at 500 MHz: < -100 dBc (1Hz) @ 10 kHz < -110 dBc (1Hz) @ 100 kHz < -130 dBc (1Hz) @ 1 MHz 2 6-dB divider (power splitter) 3 Power meter 4 Power sensor Frequency response 1 MHz to 3 GHz RSS ≤ 0.8% Meter noise ≤ 20 pW R&S NRVD 0857.8008.02 Frequency response R&S NRV-Z4 0828.3618.02 Frequency response Adjusting the reference frequency accuracy Test equipment Signal generator (refer to section "Measurement Equipment and Accessories", item 2) Test setup ¾ Connect the generator to the RF input. Generator settings - Frequency - Level R&S FSH settings - [ PRESET ] - [ FREQ : 1 GHz ] - [ SPAN : 100 kHz ] - [ BW : MANUAL RES BW : 10 kHz ] - [ MARKER : MARKER MODE : FREQ COUNT ] Adjustment The program will adjust the reference oscillator to 10 MHz ± 1 ppm. 1145.5973.82 1 GHz -30 dBm 2.6 E-4 R&S FSH Measurement Equipment and Accessories Adjusting the level accuracy Test equipment - Signal generator (refer to section "Measurement Equipment and Accessories ", item 1) - Power meter (refer to section "Measurement Equipment and Accessories ", item 3) - Power sensor (refer to section "Measurement Equipment and Accessories ", item 4) - 6-dB power splitter (refer to section "Measurement Equipment and Accessories ", item 2) Determining the level accuracy at 100 MHz Test setup ¾ Connect the power sensor (item 4) to the power meter and execute function ´ZERO´ when there is no signal applied to the power sensor. ¾ Connect the RF output of the signal generator to the input of the divider. ¾ Connect output 1 of the divider to the power sensor / power meter. ¾ Connect output 2 of the divider to the RF input of the R&S FSH. Signal generator settings - Frequency - Level 100 MHz 6 dBm ¾ Determine the output power of the signal generator with the power meter. Adjust the output power of the generator until the power meter shows the expected level “Ampt”. This level is displayed on the PC display during adjustment. R&S FSH settings - Performed automatically via the adjustment program. Adjustment The program will guide you through the required adjustments for different levels. Save calibration data If the measured values are within the programmed limits, the new constants will be automatically stored in the R&S FSH and will be used for future measurements. 1145.5973.82 2.7 E-4 Frequency Response Correction R&S FSH Frequency Response Correction Frequency response correction is part of the RF/IF module and is delivered with the module in an EEPROM. Any change requires the use of a special test program and test setup. If necessary, the module must be sent to R&S Service. 1145.5973.82 2.8 E-4 R&S FSH Instrument Design and Functional Description 3 Repair This chapter describes the design of the R&S FSH, simple measures for repair and troubleshooting, and, in particular, the replacement of modules. Firmware updates and the installation of the DTF option are described in Chapter 4. Instrument Design and Functional Description The following figure shows a block diagram of the R&S FSH. FSH6 only IF 1b 3- 6 GHz Mixer IF 2b Filter 7231 MHz Mixer Filter x2 x2 3.2 GHz 5.1 - 6.6 GHz IF 1a Protection Attenuator LowPass IN 100 kHz .. 6 GHz 0-3 GHz Mixer IF 2a Filter 4031 MHz IF 3 Mixer Filter 831.25 MHz Mixer To Mainboard Filter 31.25 MHz ADC 12 12 Noise 800 MHz 3.2 GHz TG OUT 4 - 7 GHz Mixer Reference Synthesizer 4-7 GHz 3.2 GHz Oscillator 1 (LO 1) Buffer N = 1 for f < 3 GHz N = 2 for f > 3 GHz 10 MHz TCXO :4 xN REF Oscillator 2 (LO 2) 3615.6 or 4031.2 MHz Oscillator (TG) EEPROM Audio and TRIGGER Power Sensor Address, DATA and Control Bus 12 DATA Detector Program Memory Data Memory Interconnection Board Risc Controller Power and Battery Management Battery + Temp Sense Mainboard Fig. 3-1 Audio OUT Power Adapter 18 V Optical Interface Optical Adapter Trigger Key pad LCD Module Block Diagram R&S FSH 1145.5973.82 3.1 E-5 Instrument Design and Functional Description R&S FSH Description of the block diagram The R&S FSH is a triple-conversion super-heterodyne receiver for the frequency range 100 kHz to 3 GHz. After signals are received, they are processed by the RF/IF board and the mainboard. The RF/IF board contains the functions as described below. Attenuator The RF signal passes from the input connector RF INPUT to the programmable input attenuator, which can be switched from 0 dB to 30 dB in increments of 10 dB. The circuitry is protected from overvoltage. RF to IF conversion The RF/IF board converts the received frequencies in the range 100 kHz to 3 GHz to the low 31.25 MHz IF, which is digitized with 25 MHz before it is sent to the mainboard for digital processing. The RF/IF board also includes the required local oscillators and associated frequency processing circuits. The unit is housed in silver-plated aluminum packaging. The input signal passes via the input attenuator and the lowpass filter to the first mixer. The lowpass filter provides suppression of the image frequency (image = LO+ IF) to keep the conversion unambiguous. In the 1st mixer the input signal is up-converted to an IF of 4031.25 MHz by means of the first LO (4031.25 MHz to 7031.25 MHz). The mixer is followed by a low noise IF amplifier, which compensates for the loss due to mixing. The signal then passes a filter with a 3-dB bandwidth of approximately 400 MHz for filtering the first IF. The local oscillator frequency required for this conversion is also generated on the board. This signal is generated by three VCOs synchronized to 100 MHz, which in turn is synchronized to a Temperature Compensated 10-MHz Xtal Oscillator (TCXO). This TCXO is electrically calibrated. The signal from the 1st IF filter is converted to the 2nd IF of 831.25 MHz. The signal is routed to an 831.25 MHz filter with a 3-dB bandwidth of 20 MHz for further signal processing. The filter is followed by the 3rd mixer, which converts to 31.25 MHz and utilizes an IF filter that has a -3-dB bandwidth of approximately 2 MHz. The frequency range above 3°GHz in the R&S FSH6 is converted via two additional mixers to a first IF nd of 7231.25°MHz and to the same 2 IF as in the FSH3 of 831.25 MHz. As LO signals the oscillator signals of the FSH3 are doubled. 1145.5973.82 3.2 E-5 R&S FSH Instrument Design and Functional Description 1st Mixer 1st IF Amp 1st IF Filter 2nd Mixer 7231.25 MHz B= 600 MHz 3 to 6 GHz 10.23 to 13.23 GHz 6.4 GHz x2 x2 R&S FSH6 only 1st Mixer RF Input 1st IF Amp 1st IF Filter 2nd Mixer 2nd IF Amp 2nd IF Filter 3rd Mixer 3rd IF Amp 3rd IF Filter ADC Protect. / Att. 0..30dB 12 100 kHz to 3 GHz 4031.25 MHz B= 400 MHz 831.25 MHz B= 20 MHz 1st LO 4031.25 .. 7031.25 MHz 31.25 MHz B= 2 MHz 2nd LO 3200 MHz 3rd LO 800 MHz 100kHz 800 MHz 1/4 25 MHz noise LO1_TG 3x VCO VCO 1/32 1/8 or loopfilter 30 kHz PD :1 :2 1/64 126..188 MHz or 94..110 MHz Syncon 1/2 loopfilter 30 kHz 25 MHz (DDC, DCON) Disable PD :2 20 MHz 1/5 100 MHz 1/2 50 MHz 50 MHz (Spider) :1 REF_TG 1/M TCXO M= 2..15 10 MHz 100 MHz Fig. 3-2 Block Diagram: RF to IF Conversion and Synthesizer 1145.5973.82 3.3 E-5 Instrument Design and Functional Description R&S FSH Tracking generator (Model 1145.5850.13/23/26 only) The LO frequency of the 1st mixer is routed via isolation amplifiers to the TG mixer. The other input of the mixer is a fixed frequency of 4031.25 MHz generated with a VCO locked to the TCXO frequency. The resulting IF signal is routed to the generator output connector. RF/IF control The microcontroller available on the mainboard controls the RF/IF setting by programming registers via an internal serial bus. For calibration purposes the level correction values are stored in an EEPROM. This EEPROM also contains module-specific information. The temperature of the module is continuously measured, and the measured levels will be compensated for drift if the temperature change is too great. Mainboard The mainboard is a combination of the power supply and the functions controlled by a dedicated RISC controller (ARM 720). Power and battery management The ON/OFF key is de-bounced with the real-time clock in the controller. The ON/OFF function is completely software controlled. This implies that the controller must be operational in order for the the instrument to be switched ON. The µP-clock (50 MHz) is derived from the RF/IF board, thus requiring that this board be present. This frequency will always be present if the power adapter is connected or the instrument is in the ON state. If the instrument is in the OFF state and the power supply is connected, the µP will control the charging function of the battery depending on the battery condition. The maximum charging current is 1000 mA, which drops to a trickle charge of about 100 mA if the battery is fully loaded. To prevent damage to the battery, the charging stops if the battery temperature reaches ≤ 0°C or > 45°C. In the OFF state, the charging current is approximately 90 mA. This power supply and battery management arrangement uses a dedicated IC. The instrument can be switched ON only if the battery is in operating condition. Thus, if the battery is completely empty, the instrument cannot be switched ON until the charging current has re-loaded the battery, which takes several minutes. 1145.5973.82 3.4 E-5 R&S FSH Instrument Design and Functional Description Processing of measured data detectors The measured data is processed in two dedicated ICs to reduce the sample rate of the input signal to a value that can be handled by the hardware. The DDC converts the digital IF signal to I/Q base band and filters the base band signals using low pass filters with programmable bandwidth. In addtiotion it delivers the AM or FM demodulated audio signal. The DCON Asic detects the envelope of the filtered and combined base band signal and calculates its logarithm. It contains also the video filter and the different detectors. In addition it is resposible for the sweep control of the FSH. FM DAC Audio Amp AM DAC Measurement data AF OUT Control RAM DCON 12 DDC Detectors Filters Counter TRIGGER Address, DATA and control bus Fig. 3-3 Measured Data Processing Resolution bandwidths (RBW) The resolution bandwidths are implemented in the R&S FSH through digital processing in the DDC ASIC (Digital Down Converter). The RBW can be selected from within the range 1 kHz to 1 MHz in 1-, 3or 10-unit increments. The DDC first mixes its input IF to the baseband using an NCO (Numeric Controlled Oscillator) and then filters the resulting IQ signals via a combination of HDF (High Decimation Filter) and an FIR (Finite Impulse Response) stages. At the end of the DDC processing chain, the IQ signal is split into magnitude and phase. For AF demodulation the amplitude information is used. In the case of FM the phase information is used and fed to the headphone connector. In the analyzer mode the signal at the position of the marker can be demodulated. In this case the R&S FSH stops the sweep for a selectable period of time and demodulates the input signal. The volume can be adjusted. For a standard log display of the analyzed spectrum, the magnitude data is converted from linear to logarithmic in the DCON ASIC (Digital CONtroller). Video bandwidths (VBW) The video filters can be adjusted between 10 Hz and 3 MHz in increments of 1/3/10. They are designed as digital lowpass filters for the video signals in the DCON ASIC. Software can couple the VBW to the RBW, or the VBW can be set independently. 1145.5973.82 3.5 E-5 Instrument Design and Functional Description R&S FSH Detectors The R&S FSH uses a detector for the positive peak and the negative peak value. In the “sample” mode the measured value is routed directly to the display. In the RMS“ mode the detector determines the rms value of the input signal for one specific point in the display during the measured time. Keypad control Keypad control is a dedicated function of the controller. For the implementation of the rotary knob, an encoder is used that is detected with a dedicated CPLD (Complex Programmable Logic Device). This “One Time Programmable” CPLD is programmed during production. Serial optical interface The interface to an external PC has been implemented with optical technology to avoid electrical loops. The protocol is RS-232-based and is implemented in the instrument by the UART of the controller. It requires a special optical RS-232 cable for communication (R&S FSH-Z34, delivered with the instrument). The maximum baud rate is 115200. Power sensor The power sensor uses the display of the R&S FSH. Communication is achieved with a separate UART from the controller. Color LCD module The ¼ VGA passive matrix display is backlighted by an FCC backlight, whose light output can be adjusted to an optimum between visibility and battery use. 1145.5973.82 3.6 E-5 R&S FSH Module Replacement Module Replacement This section describes the service concept and contains the spare parts list and the basic documents for the R&S FSH instrument. Note: The numbers indicated in brackets refer to items in the mechanical exploded drawings. Note: The words “left” and “right” in the manual always refer to the front view of the instrument. • Please pay close attention to the safety instructions in the front section of this manual. • Disconnect the power connector from the instrument before opening the case. • Safeguard the replacement site against electrostatic discharge to prevent damage to electronic components of the modules. • The following two methods of ESD protection can be used together or separately: Caution! Wrist strap with cord Building ground - Wrist strap with cord to ground connection - Conductive floor mat and heel strap combination Ground connection of operational site Heel strap Floor mat 1145.5973.82 3.7 E-5 Module Replacement R&S FSH S1 S1 2.4 S2 X2 S2 2.3 S2 9 7 S1 4 2.2 S1 8 10.2 W1 5 X2 10.1 S4 S4 S4 S4 10.3 S4 S4 S4 S4 S4 3 S3 1 6 S1 S3 S1 Fig. 3-4 2.1 Exploded View 1145.5973.82 3.8 E-5 R&S FSH Module Replacement Overview of the modules Table 3-1 List of spare parts and order numbers Reference Part R&S Order Number 1 Battery Pack for R&S FSH (R&S FSH-Z32) 1145.5796.02 2 Housing R&S FSH without top holster 1157.3258.00 2.4 Top holster for FSH without tracking generator 1157.3487.00 Top holster for FSH with tracking generator 1157.3493.00 Front unit for R&S FSH3 1157.3241.00 Front unit for R&S FSH6 1300.7591.00 LCD module 1157.3229.00 LCD plane for FSH3 1300.7704.00 LCD plane for FSH6 1300.7710.00 3 4 5 RF/IF module for R&S FSH3 without tracking 1157.3606.00 generator RF/IF Module for R&S FSH3 with tracking generator 1157.3612.00 RF/IF Module for R&S FSH6 without tracking 1300.7604.00 generator RF/IF Module for R&S FSH6 with tracking generator 1300.7610.00 6 Mainboard for R&S FSH 1157.3570.00 7 N connector 1157.3235.00 8 Interconnection board 1157.3587.00 9 Input unit (power and audio connectors, including wire tree) 1157.3270.00 10 Set of cables for R&S FSH 1157.3329.00 21 AC mains adapter for R&S FSH (EU Version) 1157.3293.00 22 AC mains adapter for R&S FSH (UK Version) 1157.3306.00 23 AC mains adapter for R&S FSH (US Version) 1157.3312.00 AC mains adapter for R&S FSH (AUS Version) 1157.3370.00 See exploded drawing on the previous page. 1145.5973.82 3.9 E-5 Module Replacement R&S FSH Opening the instrument (See exploded drawing for related numbers.) ¾ Disconnect the power plug. ¾ Switch the instrument to OFF. ¾ Loosen the six (S1) screws and remove the top cover (2.4) and bottom cover (2.1). ¾ Disconnect the connector (X2). ¾ Loosen the three (S2) screws and remove the grip cover (2.3). ¾ Loosen the two (S3) screws and remove the rear case (2.2). ¾ Loosen the nine (S4) screws and remove the mainboard shielding. Closing the instrument ¾ Mount the mainboard shielding and fasten the nine (S4) screws. Note that the shielding of wire-tree (W1) is reconnected again. ¾ Mount the rear case (2.2) and fasten the two (S3) screws. ¾ Mount the grip cover and fasten the three (S2) screws. ¾ Connect the connector (X2). ¾ Mount the top cover (2.4) and bottom cover (2.1). ¾ Fasten the six (S1) screws . ¾ Perform the quick verification test. Refer to Chapter 2 “Adjustment”. Caution! Note that the connecting cables are still connected. ¾ Note: When detaching the connectors, proceed with caution. Fig. 3-5 1145.5973.82 Opening the instrument 3.10 E-5 R&S FSH Module Replacement Replacing the battery ¾ Open the instrument. ¾ Disconnect connector (X1). ¾ Replace the battery. ¾ Connect (X1). ¾ Close the instrument. ¾ Charge the battery. ¾ Perform the quick verification test. Refer to Chapter 2 “Adjustment”. ¾ Note: It is recommended that battery charging be performed with the instrument switched OFF and the AC power connected to the mains. The charging time for a full battery is about 4 hours. X1 Fig. 3-6 Replacing the battery 1145.5973.82 3.11 E-5 Module Replacement R&S FSH Replacing the housing Housing parts: 2.1: Bottom cover 2.2: Rear case 2.3: Grip cover 2.4: Top cover Notes: When replacing the rear case, the existing type plate must be placed on the new rear case, or the old series number must be written on the new type plate. When the grip cover is replaced, the “input unit power/audio connections” have to be placed in the new grip cover. See also Replacing the power/audio connections. ¾ Open the instrument. ¾ Replace the specific housing part. ¾ Close the instrument. ¾ Perform the quick verification test. Refer to Chapter 2 “Adjustment”. 2.3 2.1 2.4 2.2 Type Plate Fig. 3-7 Replacing the housing 1145.5973.82 3.12 E-5 R&S FSH Module Replacement Replacing the front unit for R&S FSH ¾ Open the instrument. ¾ Remove the battery . ¾ Remove the Main Unit: ¾ Disconnect the connectors (X3), (X4), and (X5). ¾ Remove the main unit by unscrewing the two (S5) screws. ¾ Remove the LCD colour module: ¾ Losen the four (S6) screws. ¾ Remove the LCD colour module. ¾ Use the new front unit to assemble the instrument again. Before mounting the unit, make sure that no dust is present between the front unit and the LCD colour module. ¾ Mount the LCD colour module with the four (S6) screws. ¾ Mount the Main Unit with the two (S5) screws. ¾ Connect the connectors (X3), (X4), and (X5). ¾ Mount the battery. ¾ Close the instrument. ¾ Perform the quick verification test. Refer to Chapter 2 “Adjustment”. Main Unit S5 S5 S6 Color LCD Module S6 X3 X4 X4 X5 S6 S6 X5 X6 X3 Fig. 3-8 Replace Front Unit 1145.5973.82 3.13 E-5 Module Replacement R&S FSH Replacing the Color LCD Module ¾ Open the instrument. ¾ Remove the battery ¾ Remove the Main Unit: ¾ Disconnect the connectors (X3), (X4), and (X5). ¾ Remove the main unit by unscrewing the two (S5) screws. ¾ Remove the LCD colour module: ¾ Disconnect the connector (X6). ¾ Losen the four (S6) screws. ¾ Remove the LCD colour module. ¾ Use the new module to assemble the instrument again. Before mounting the unit, make sure that no dust is present between the front unit and the colour module. ¾ Mount the LCD colour module with the four (S6) screws. ¾ Mount the Main Unit with the two (S5) screws. ¾ Connect the connectors (X3), (X4), and (X5). ¾ Mount the battery. ¾ Close the instrument. ¾ Perform the quick verification test. Refer to Chapter 2 “Adjustment”. S6 S6 LCD Retaining Plate X5 S6 S6 X6 X4 X6 X3 Fig. 3-9 Replacing the Color LCD Module 1145.5973.82 3.14 E-5 R&S FSH Module Replacement Replacing the RF/IF module ¾ Open the instrument. ¾ Disconnect the flat cable (X8) and remove the tape. ¾ Disconnect the connectors (X7) and (X9). ¾ Remove the RF/IF module by unscrewing (S7). ¾ Remove the binder and BNC connector block: ¾ Loosen the four (S8) screws. ¾ Remove the connector block. ¾ Mount the new RF/IF module. ¾ Mount the binder and BNC connector block with the four (S8) screws. ¾ Connect connectors (X7) and (X9). ¾ Mount the flat cable (X8), including the ferrite. ¾ Fasten the flat calbe with the tape. ¾ Close the instrument. ¾ Perform the manual adjustment. Refer to Chapter 2 “Adjustment”. S8 S8 Binder and BNC Connector Block S8 S8 S7 Tape X7 X8 X9 Fig. 3-10 Replacing the RF/IF Module 1145.5973.82 3.15 E-5 Module Replacement R&S FSH Replacing the mainboard The mainboard contains information about the instrument like the serial number. Special tools are necessary to update this information after replacement of the mainboard. Therefore the exchange of the mainboard is possible in a R&S Service Center, only. ¾ Open the instrument. ¾ Remove the battery. ¾ Loosen the two (S5) screws. ¾ Disconnect the connectors (X3), (X4), (X5), (X7), (X8) and (X9). ¾ Loosen the three screws (S11) and the remove the board. Note that the two lower screws are isolated. ¾ Remove the distance screw (S12) ¾ Mount the new board and fasten (S11) and (S12). ¾ Connect connectors (X3), (X4), (X5), (X7), (X8) and (X9). ¾ Mount the Battery. ¾ Close the instrument. ¾ Perform the manual adjustment. Refer to Chapter 2 “Adjustment”. S12 X7 X8 X7 X5 X8 X9 X4 S11 X3 S11 X1 S5 S11 S5 Fig. 3-11 Replacing the Main Board 1145.5973.82 3.16 E-5 R&S FSH Module Replacement Replacing the N connector ¾ Open the instrument. ¾ Remove the battery. ¾ Remove the RF/IF module by unscrewing (S7). ¾ Disconnect the flat cable (X8). ¾ Disconnect the connectors (X7) and (X9). ¾ Remove the binder and BNC connector block: ¾ Loosen the four (S8) screws. ¾ Remove the connector block. ¾ Loosen the two screws (S9) from front RF housing for each N connector. ¾ Loosen the 9 screws (S10) from the RF housing. ¾ Remove the front RF housing. ¾ Clean the center contact of solder left from the N connector to be replaced. ¾ Loosen the other two screws (S9) from the appropriate N connector. ¾ Mount the new connector by first screwing it into the rear RF housing. ¾ Solder the center connection. ¾ Mount the front RF housing (S10). ¾ Fasten the two screws (S9) to the front RF housing for each the N connector. ¾ Mount the binder and BNC connector block with the (S8) screws. ¾ Mount the flat cable (X8), including the ferrite. ¾ Connect the connectors (X7) and (X9). ¾ Mount the RF/IF module (S7). ¾ Mount the Battery and close the instrument. ¾ Perform the manual adjustment. Refer to Chapter 2 “Adjustment”. S9 S9 S9 S9 S8 Rear RF Housing S8 S8 S9 S9 Front RF Housing Binder and BNC Connector Block S10 X10 S10 S10 S10 S10 Fig. 3-12 Replacing the N-Connector 1145.5973.82 3.17 E-5 Module Replacement R&S FSH Replacing the binder and BNC connector block (See exploded view for references). ¾ Open the instrument. ¾ Disconnect the flat cable (X10). ¾ Disconnect the connector (X7). ¾ Remove the binder and BNC connector block: ¾ Loosen the four (S8) screws. ¾ Remove the connector block. ¾ Mount the binder and BNC connector block with the four (S8) screws. ¾ Connect the connectors (X7). ¾ Mount the flat cable (X10). ¾ Close the instrument. ¾ Perform the quick verification test. Refer to Chapter 2 “Adjustment”. S8 S8 S8 S8 X10 X7 Fig. 3-13 Replacing the Binder and BNC connector block 1145.5973.82 3.18 E-5 R&S FSH Module Replacement Replacing the power/audio connections ¾ Remove the top cover. ¾ Disconnect the connector (X2) ¾ Remove the connection wire tree from the grip cover. ¾ Mount the wire tree again. ¾ Mount the top cover. ¾ Perform the quick verification test. Refer to Chapter 2 “Adjustment”. X2 Fig. 3-14 Replacing the Power/ Audio Connections 1145.5973.82 3.19 E-5 Module Replacement R&S FSH Replacing a cable from the cable set Note: The cable set is needed in the event that a cable is damaged during the replacement of one of the modules. Cables from the set: ¾ 10.1: 50-p 10.2: Flat flexible cable, 8 connections 10.3: Flat cable 22-p For replacement instructions, refer to the individual modules. 10.1 10.2 10.3 Fig. 3-15 Cable set 1145.5973.82 3.20 E-5 R&S FSH Troubleshooting Troubleshooting Malfunctions can have simple causes but can also be due to faulty components or modules. These troubleshooting instructions can be used to locate causes of error down to the board level and to return the instrument to operability by replacing boards. We recommend that the instrument be shipped to our experts at the service centers (refer to address list) for module replacement and further error correction. Warning! Note: Do not plug or unplug boards without first disconnecting the battery and the AC Power Supply! When problems occur, first check whether any connections (cables, plug-in connections of boards, etc) are damaged or incorrectly connected. 1145.5973.82 3.21 E-5 Troubleshooting R&S FSH Overview of errors, causes, and possible corrective actions This section lists various errors, the probable module causing the problem, and the suggested corrective action. Troubleshooting problems in switching on the instrument • Error: R&S FSH cannot be switched on. Note: When the instrument is switched on, a beep is issued to indicate that the instrument has started. Troubleshooting procedure Verify that the AC power is present. ⇓ Press the On button for > 5 s. ⇓ Open the instrument and check the battery. Possible cause of error and further steps Connect the adapter to the mains and wait several minutes until the charger has recharged the battery. This will force the instrument to perform a software reset and a reset of the internal RAM. The instrument firmware will restart and all data will be reset. Voltage > 7.2 V. ⇓ Check the connectors from the AC power Power connector broken. supply: X2 and X7 (refer to section “Repair”). Replace the power and audio connections. Replace module”). • the mainboard (refer to “Replacing the Error: Display remains dark although the beep indicated that the software was started. Troubleshooting procedure Open the instrument and check X4 (backlight connector). Possible cause of error and further steps Backlight connection open or backlight converter broken. Connect again, or replace the mainboard or LCD colour module. 1145.5973.82 3.22 E-5 R&S FSH • Troubleshooting Error: Display has erroneous colours and characters. Troubleshooting procedure Open the instrument and check X5 and X6 (LCD data). Possible cause of error and further steps Data connection broken, or circuitry on the mainboard defective. Connect again, or replace the mainboard or LCD colour module • Error: Frequency response not compliant with specification. This response can only be corrected at the service center. Replace the RF/IF module. • Error: Level display very noisy. Troubleshooting procedure Check the N connector. ⇓ Possible cause of error and further steps The N connector is soiled. Clean or replace the N connector. Replace the RF/IF module. • Error: Several keys on the keypad do not respond. Troubleshooting procedure Check X3. Possible cause of error and further steps The connection is not operational or the keypad is broken. Correct the connection, or replace the front unit. • Error: Power sensor does not respond properly. Troubleshooting procedure Check X8 and X10. Possible cause of error and further steps The connection is not operating correctly, the binder connector is broken, the mainboard is broken, or the cables are broken. Correct the connection. Replace the binder and BNC connector block. Replace the mainboard. Replace any broken cable in the cable set. 1145.5973.82 3.23 E-5 R&S FSH Installing New R&S FSH Software 4 Software Updates / Installing Options This chapter provides information on software updates and how to install options on the R&S FSH. Additional manuals supplied along with software/firmware updates or with options obtained later can be recorded here. Installing New R&S FSH Software A new firmware version can be installed via the R&S website. You can download the newest software version, and the new software can be loaded onto the R&S FSH by using the setup program. The instructions are included in the program. Installing the Options The following options are available with the R&S FSH: Distance to Fault Measurement for R&S FSH R&S FSH-B1 1145.5750.02 Remote Control via RS-232-C R&S FSH-K1 1145.3458.02 Vector Transmission and Reflection Measurements R&S FSH-K2 1145.3387.02 1145.5973.82 4.1 E-4 R&S FSH Shipping of Instrument and Ordering of Spare Parts 5 Documents This chapter provides information on how to order spare parts, and it also contains the spare parts list. Shipping of Instrument and Ordering of Spare Parts Please contact your Rohde & Schwarz support center or our spare parts express service if you need to request service, repair your equipment, or order spare parts and modules. The list of Rohde & Schwarz representatives and the address of our spare parts express service are provided in the front section of this service manual. You will need to provide the following information in order for us to respond to your inquiries quickly and accurately and to determine whether the warranty for your instrument is still valid: • • • • Instrument model Serial number Detailed error description in case of repair Contact partner for checkbacks Shipping of instrument When shipping the instrument, be sure to provide sufficient mechanical and anti-static protection: ¾ Repack the instrument as it was originally packed. The antistatic packing foil prevents unintentional electrostatic charging from occurring. ¾ If you do not use the original packaging, include sufficient padding to prevent the instrument from slipping inside the package. Wrap antistatic packing foil around the instrument to protect it from electrostatic charging. Shipping of a module When shipping a module, be sure to provide sufficient mechanical and antistatic protection: ¾ Ship the module in a sturdy, padded box. ¾ Wrap the board in antistatic foil. If the packaging is antistatic but not conductive, additional conductive packaging is required. The additional packaging is not required if the enclosed packaging is conductive. 1145.5973.82 5.1 E-5 Shipping of Instrument and Ordering of Spare Parts R&S FSH Ordering spare parts To deliver replacement parts promptly and correctly, we need the following information: • • • • • R&S order number (refer to the spare part lists in this chapter) Designation Number of units Instrument type for the replacement part Contact person for possible questions The R&S order number to be used when ordering replacement parts and modules as well as power cables can be found further below. Refurbished modules ¾ Refurbished modules are an economical alternative to original modules. It should be kept in mind that refurbished modules are not new, but repaired and fully tested parts. They may have signs of use but they are electrically and mechanically equivalent to new modules. ¾ To find out which refurbished modules are available, please contact your Rohde & Schwarz representative (or the central service division at Rohde & Schwarz in Munich). Return of defective replaced modules ¾ Defective modules of the replacement program that can be repaired may be returned within 3 months after delivery of the replaced module. A repurchasing value is credited. ¾ Excluded are parts that cannot be repaired, e.g. PCBs that are burned, broken or damaged by repair attempts, incomplete modules, or parts that have endured heavy mechanical damage. ¾ Defective parts must be sent back with an accompanying document of returned items containing the following information: • R&S order number, serial number and designation of the removed part • Precise description of the error • R&S order number, serial number and designation of the instrument the part was removed from • Date of part removal • Name of the technician who exchanged the part ¾ A document of returned items is provided along with each replacement module. 1145.5973.82 5.2 E-5 R&S FSH Spare Parts Spare Parts The R&S Order numbers necessary for ordering replacement parts and modules can be found in the spare part lists provided below. List of R&S FSH spare parts The following table lists available spare parts together with their R&S order numbers. Reference Part R&S Order Number 1 Battery Pack for R&S FSH (R&S FSH-Z32) 1145.5796.02 2 Housing R&S FSH without top holster 1157.3258.00 2.4 Top holster for FSH without tracking generator 1157.3487.00 Top holster for FSH with tracking generator 1157.3493.00 Front unit for R&S FSH3 1157.3241.00 Front unit for R&S FSH6 1300.7591.00 LCD module 1157.3229.00 LCD plane for FSH3 1300.7704.00 LCD plane for FSH6 1300.7710.00 3 4 5 RF/IF module for R&S FSH3 without tracking 1157.3606.00 generator RF/IF Module for R&S FSH3 with tracking generator 1157.3612.00 RF/IF Module for R&S FSH6 without tracking 1300.7604.00 generator RF/IF Module for R&S FSH6 with tracking generator 1300.7610.00 6 Mainboard for R&S FSH 1157.3570.00 7 N connector 1157.3235.00 8 Interconnection board 1157.3587.00 9 Input unit (power and audio connectors, including wire tree) 1157.3270.00 10 Set of cables for R&S FSH 1157.3329.00 21 AC mains adapter for R&S FSH (EU Version) 1157.3293.00 22 AC mains adapter for R&S FSH (UK Version) 1157.3306.00 23 AC mains adapter for R&S FSH (US Version) 1157.3312.00 AC mains adapter for R&S FSH (AUS Version) 1157.3370.00 1145.5973.82 5.3 E-5 Spare Parts Note: R&S FSH The reference can be found in the exploded drawing in Chapter 3. Important Note! When replacing a module, please pay careful attention to the safety instructions and the repair instructions provided in chapter 3 and at the beginning of this service manual. When shipping a module, be sure to provide sufficient mechanical and antistatic protection. 1093.4820.82 5.4 E-5
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