Agilent 8922 - Manual

Contents Contents-2 6 Troubleshooting the Power Supply Introduction 6-2 Power Cord Verification 6-3 Line Voltage Selection / Line Fuse Replacement 6-5 Transformer / Power Switch 6-6 A28 Power Supply 6-7 Where To Go Next 6-8 7 Adjustments and Calibration Introduction 7-2 Timebase Adjustments 7-3 Peri...

Contents Contents-3 9 Replacing a Part Introduction 9-2 Replaceable Parts 9-3 Firmware Upgrades 9-29 10 Service Screen Introduction 10-2 11 Self-Test Error Messages Introduction 11-2 12 Module I/O Specifications Introduction 12-2 A2 Audio Analyzer 2 12-3 A3 Audio Analyzer 1 12-5 A4 Modulation Distri...

Contents Contents-4 A28 Power Supply 12-58 A33 Hop Controller 12-59 13 Instrument Block Diagrams Introduction 13-2 14 Block Diagram Theory of Operation Introduction 14-2 Technical Discussion 14-3 Block Diagram 1 14-4 Block Diagram 2 14-9 Block Diagram 3HP/Agilent 8922B Only 14-15 Block Diagram 4 14-...

Contents Contents-5 16 Measurement Theory Introduction 16-2 17 GSM Theory Introduction 17-2 The GSM System 17-3 E-GSM, DCS1800 and PCS1900 Systems 17-4 Index 1

Contents Contents-6 This Page Intentionally Left Blank

1-2 Localizing the ProblemIntroduction Introduction This chapter helps to determine if a problem actually exists and which section of theinstrument has a problem. This chapter comprises of four sections. ❒ Localizing the Problem Flow Chart (Power-Up) ❒ Power-Up Checks ❒ If Power-Up Failed • Power-Up...

1-3 Localizing the Problem Localizing the Problem - Flow Chart (Power-Up) Localizing the Problem - Flow Chart (Power-Up) See "Power Up Checks", in this Chapter, for details of the steps given in the flow chartbelow. Figure 1-1 Localizing the Problem - Flow Chart Power On Fan On? Messages OK?...

1-4 Localizing the ProblemPower-Up Checks Power-Up Checks The following checks show whether the instrument is powering up correctly. (a) Depress the power button on the front panel (see diagram). (b) Check that the fan on the rear panel is working. (c) Listen for a single “beep” after pressing the p...

1-5 Localizing the Problem If Power-Up Checks FAILED If Power-Up Checks FAILED If the power up checks failed, continue with this section. ❒ If the fan did not start, see "Troubleshooting the Power Supply", Chapter 6. ❒ If the fan started, but any of the other power-up checks failed, see "...

1-6 Localizing the ProblemIf Power-Up Checks FAILED Power-Up Self Test Diagnostics If the power-up sequence failed, the power-up self-tests can be re-run with the covers off.The LED’s on the controller board give the results of the power-up self-test. (a) Remove the instrument covers. Refer to the s...

1-7 Localizing the Problem If Power-Up Checks FAILED The following conventions are used to represent the LED’s throughout this chapter. LED Sequences The LED error sequence will show two states, pass or fail, which are outlined below. Thesuspect assembly is given in the following tables, before movi...

1-9 Localizing the Problem If Power-Up Checks FAILED Where to Go Next ❒ If the LED’s did not light at all, go to Chapter 6, "Troubleshooting the Power Supply". ❒ If an error messgae occurs, use it in Chapter 2, "Running Diagnostics" to choose whichdiagnostic test to run. See also Cha...

1-10 Localizing the ProblemIf Power-Up Happened Correctly If Power-Up Happened Correctly If power-up happened correctly and no problem is indicated, this section is used to func-tionally check most of the hardware. The generators are checked first with external mea-surements, then the analyzers are ...

1-11 Localizing the Problem If Power-Up Happened Correctly Highlight the RF Output field (1). Select AUX RF OUT from the list of choices. Set the RF Generator Amplitude field to 10 dBm (2). Set the AF Generator Amplitude field to 1 V (3). Figure 1-5 RF Analyzer Settings Where to Go Next • If the gen...

1-12 Localizing the ProblemIf Power-Up Happened Correctly Checking the RF Analyzer Using the RF Generator This section tests the RF Analyzer using the RF Generator as a signal source. This taskassumes the same setting used in the previous section. • Connect the RF In/Out to the Aux RF Out. Figure 1-...

1-13 Localizing the Problem If Power-Up Happened Correctly • Set the RF Analyzer Frequency field to 935 MHz (1). • Set the RF Analyzer Amplitude field to 10 dBm (2). • Set the Mod Source GMSK field to Off (3). • Select More in the bottom right-hand corner of the screen (4). Figure 1-7 RF Generator/A...

1-14 Localizing the ProblemIf Power-Up Happened Correctly • Select CW/AF ANL from the list of choices, and read the CW Freq (5) and CW Power (6) fields. Figure 1-8 CW Readings Where to Go Next• If the analyzer measurement was within the specification, go to the next section,“Checking the AF Analyzer...

1-15 Localizing the Problem If Power-Up Happened Correctly Checking the AF Analzyer Using the AF Generator This section tests the AF Analyzer with the AF Generator as a source. The AF Generatorsettings are the same as the first task, and displays the CW MEAS/AF ANL screen. • Connect the AUDIO OUT to...

2-3 Running Diagnostics Running Memory Card or ROM Based Diagnostics Running Memory Card or ROM Based Diagnostics Do these steps in the order shown 3 Press TESTS 1 - Press PRESET 2 - Insert Memory Card (Optional)

2-6 Running DiagnosticsRunning Memory Card or ROM Based Diagnostics Selecting Memory Card Diagnostic Test Execution Conditions Where to Go Next: If any high-probability failures occurred, those assemblies can be replaced and the test re-run. When the tests pass, the performance tests can be run to v...

2-7 Running Diagnostics Loading and Running the Ram Test Loading and Running the Ram Test Your HP/Agilent 8922B comes with software to test the Data Buffer. Loading the RAM Test 1 Locate the floppy disk labeled “08922-10001, 8922B Driver.” 2 Insert the disk into the drive. 3 Type MSI A: (substitute ...

3-2 Verifying PerformanceIntroduction Introduction Because of the specialized nature of the HP/Agilent 8922 and the equipment required tosupport it, it is recommended that calibration and repair be performed only by speciallyequipped Agilent Technologies service centers. A list of specifications and...

3-3 Verifying Performance Using the Compatibility Switch for the HP/Agilent 8922F/H or M/S To Load the Program in the Agilent 8922M/S. To verify the performance of the HP/Agilent 8922H/M you need to convert the instrumentback from an HP/Agilent 8922G, or convert the HP/Agilent 8922F/S to an HP/Agile...

3-4 Verifying PerformanceUsing the Compatibility Switch for the HP/Agilent 8922F/H or M/S To Configure the GPIB Addresses 1) With the program loaded, type ``EDIT DEFAULT_ADDRESS'', press ENTER. 2) Modify each line to indicate the proper instrument address (700-730). It is now possible to re-store th...

4-3 Using the HP/Agilent 83210A Service Kit Configuring the RF Extender Configuring the RF Extender To extend RF modules, it is necessary to use the RF extender board (08922-60129) withthe correct coax jumper cables. These cables route the RF signals to and from the moduleand allow the signal path t...

4-4 Using the HP/Agilent 83210A Service KitConfiguring the RF Extender The following example shows how to interpret table 4-2 and install the coax jumpers onthe extender board. This example shows the configuration for the A13 assembly. Figure 4-1 RF Extender Board

4-5 Using the HP/Agilent 83210A Service Kit Extending Modules Extending Modules The modules shown in the following table can be extended using the appropriate extenderboards from the HP/Agilent 83210A Service Kit. Assemblies that cannot be extended canusually be accessed directly while the assembly ...

4-6 Using the HP/Agilent 83210A Service KitMaking Measurements Making Measurements Audio / Digital Assemblies The extender boards for the audio and digital assemblies allow the boards to be extendedabove the instrument. This provides better access to signals going to and from theseassemblies. Refer ...

4-7 Using the HP/Agilent 83210A Service Kit Making Measurements 3. Remove the correct coax jumper and connect a measurement instrument as shown in the following diagram. To measure signals going TO the module, measurements shouldbe made on the lower row of connectors on the extender module. Outputs ...

5-3 Troubleshooting the Controller/Display Parallel Bus Parallel Bus The parallel bus is at the center of the control section. The parallel bus is defined as directconnections to the A7 Controller. These connections include the data bus, address bus anddedicated parallel control lines. The assemblie...

5-4 Troubleshooting the Controller/DisplaySerial Bus Serial Bus The serial bus controls many of the assemblies through individual serial control lines. Theserial control lines are generated at the A33 Hop Controller. The A33 Hop Controller takes parallel data from the A7 Controller and de-multiplexe...

5-5 Troubleshooting the Controller/Display Display Display The display section contains the A22 CRT, and the A20 CRT Drive. The A20 CRT Drivereceives parallel data from the A7 Controller and generates the drive signals for the A22CRT. The A20 CRT Drive is tested during the power-up self-tests for th...

5-6 Troubleshooting the Controller/DisplayKeyboard Keyboard The A1 Keyboard assembly contains both the keys and the knob. The keyboard isconfigured in a matrix with the rows being scanned with pulses from the A7 Controllerand the columns being read by the controller. The column lines are pulled up t...

6-3 Troubleshooting the Power Supply Power Cord Verification Power Cord Verification Use this diagram to verify that the correct line cord is being used. Table 6-1 Line Cords PlugType Cable Agilent Part Number CD Plug Description Length, inches (mm) Cable Color For Use In Country 8120-13518120-1703 ...

6-5 Troubleshooting the Power Supply Line Voltage Selection / Line Fuse Replacement Line Voltage Selection / Line Fuse Replacement Use this diagram to verify that the line module is set to the correct line voltage, that thefuse is not blown, and that it is the correct value.

6-6 Troubleshooting the Power SupplyTransformer / Power Switch Transformer / Power Switch Use this diagram to verify that the correct voltages are present when the instrument’spower cord is connected. The table shows the expected values and pin numbers.

6-7 Troubleshooting the Power Supply A28 Power Supply A28 Power Supply Use this diagram to verify that the regulated voltages are present and correct at the outputof the power supply board, and at the mother board connection to the regulator. Use thisdiagram also to check the fuses on the fuse board...

6-8 Troubleshooting the Power SupplyWhere To Go Next Where To Go Next If any part of the power supply is defective refer to chapter 8 “Assembly/Disassembly”and chapter 9 “Replacing a Part” for removal and replacement. After the power supply isrepaired, go to chapter 1 “Localizing the Problem” to ver...

7-3 Adjustments and Calibration Timebase Adjustments Timebase Adjustments Standard Timebase Adjustment Procedure (Reference Calibration) NOTE This procedure should only be performed after the instrument has warmed up at least 30minutes. It should be performed after replacement of the reference secti...

7-4 Adjustments and CalibrationTimebase Adjustments Option 001 High Stability Timebase Adjustment Procedure 1. Remove the instrument top cover. Power up the instrument and let it warm up for approximately 1 hour. 2. Remove the rear-panel cable between the Opt. 001 REF OUT and REF IN connectors (if p...

7-5 Adjustments and Calibration Periodic Calibrations Periodic Calibrations To Run the Periodic Self-Calibration Program 1. Press to access the TESTS screen. 2. Select the field to the right of the colon under Procedure . 3. Select ROM under the Choices: menu. 4. Select the field to the left of the ...

7-6 Adjustments and CalibrationSum Loop Adjustment Procedure Sum Loop Adjustment Procedure This procedure should be performed whenever Step Loop A Assembly (A26) or SumLoop Assembly (A25) is replaced. It is not necessary to perform this adjustment for aperiodic calibration. A spectrum analyzer is re...

7-7 Adjustments and Calibration Sum Loop Adjustment Procedure Second Adjustment 9. Now set the HP/Agilent 8922 frequency to 502 MHz. 10. Set the spectrum analyzer center frequency to 488.6 MHz with a span of 10 MHz per division. 11. Adjust R180 “GAIN” on top of Sum Loop (A25) until the signal on the...

8-2 Assembly and Disassembly ProceduresIntroduction Introduction Removing and replacing assemblies is straightforward. This chapter contains tool lists,hints and drawings to help you do it effectively. Detailed step-by-step procedures are notgiven for all assemblies. After replacing certain assembli...

8-3 Assembly and Disassembly Procedures Top and Bottom Cover Removal Top and Bottom Cover Removal 1. Remove four 2-pt. Pozidriv top bumper mounting screws. 2. Remove four 2-pt. Pozidriv side mounting screws and bumpers. 3. Remove four 2-pt. Pozidriv screws and standoffs. 4. Remove fourteen TX-10 scr...

8-4 Assembly and Disassembly ProceduresInside Protective Covers Inside Protective Covers All covers can be removed with a TX-15 screw driver. Screws shown circled only requireloosening. 12 CRT Bracket 426 3 424 416-421,427-456 502-504Nut 499-501Washer 506-521 493-498 114 RegularMountingBracket and11...

8-5 Assembly and Disassembly Procedures AF, Digital and RF Assemblies Removal AF, Digital and RF Assemblies Removal A27A28 A25A13A15 A11 A16 A18 A17 A14 A2 A3 A4 A5 A6 A9 A8 A7 A33 A34, (A,G) A37 (B) A31, (G)A36, (B) A32 A19 A20

8-7 Assembly and Disassembly Procedures A1 Front Panel Removal A1 Front Panel Removal Done with top, bottom, and inside protective covers removed. Removing Modules 1. Remove RF cover. 2. Remove RF modules. Disconnecting Cables 3. Disconnect RF cable on mixer assembly. (1/4-inch SMA connector) 4. Dis...

8-8 Assembly and Disassembly ProceduresA1 Front Panel Removal A1 6 7-11 (A1 Mounting Screws) 49-52,54-63,66 547(Trim) 2 (Frame) 1 (Panel 31 (Nut under Dress) volume knob) 48 33 32 J1 70 W31PowerSwitch 34 38-43,45, 46,65 546(Trim) 27-30 47 35 (Trim)548 37 36 RFI Gaskets Top 532Bottom 533Right Side 52...

8-9 Assembly and Disassembly Procedures A10 Power Supply Regulator Removal A10 Power Supply Regulator Removal Done with top cover removed. 1. Remove Digital cover. 2. Remove A33 Hop Controller to expose A10 screw. 3. Loosen TX-15 screw. 4. Disconnect attached cable and remove power regulator. Tools ...

8-10 Assembly and Disassembly ProceduresA11 Receiver Mixer Removal A11 Receiver Mixer Removal Done with top cover removed. 1. Remove RF cover. 2. Remove at least three RF modules. 3. Remove three TX-10 screws. 4. Disconnect all cables and remove the A11 Receiver Mixer assembly. Tools Required • TX-1...

8-12 Assembly and Disassembly ProceduresA12 Pulse Attenuator Removal A12 Pulse Attenuator Removal Done with top cover removed. 1. Remove RF cover. 2. Remove at least three RF modules. 3. Remove two TX-10 screws. 4. Disconnect all cables and remove A12. Tools Required • TX-15 screw driver • TX-10 scr...

8-14 Assembly and Disassembly ProceduresA21 GPIB Interface Removal A21 GPIB Interface Removal Done with top cover removed. 1. Remove four TX-15 power supply cover screws. 2. Remove two 7mm bolts. 3. Remove one TX-10 screws. 4. Disconnect ribbon cable. Tools Required • TX-15 screw driver • TX-10 scre...

8-16 Assembly and Disassembly ProceduresA22 Display Removal A22 Display Removal Done with instrument top and bottom covers removed. 1. Do steps 1 through 11 of the A1 Front Panel removal instructions. NOTE The front panel assembly must be separated from the main chassis. Considerable pullingforce is...

8-17 Assembly and Disassembly Procedures A22 Display Removal 8 7 6 5 CRT SIDE VIEW 4 (4 places) 2 CRT 3

8-18 Assembly and Disassembly ProceduresA23 Input Section Removal A23 Input Section Removal Done with instrument top and bottom cover removed. 1. Do steps 1 through 11 of the A1 Front Panel removal instructions. NOTE The front panel assembly must be separated from the main chassis. Considerable pull...

8-19 Assembly and Disassembly Procedures A24 Attenuator Removal A24 Attenuator Removal Done with instrument top and bottom covers removed. 1. Do steps 1 through 11 of the A1 Front Panel removal instructions. NOTE The front panel assembly must be separated from the main chassis. Considerable pullingf...

8-20 Assembly and Disassembly ProceduresA28 Power Supply Removal A28 Power Supply Removal Done with instruments top and bottom covers removed. 1. Remove power supply cover. 2. Remove standard plate. If installed remove option 001. 3. Remove five TX-10 screws that attach power supply board to the mai...

8-22 Assembly and Disassembly ProceduresFan Removal Fan Removal Done with top cover removed. 1. Remove four TX-15 power supply cover screws and remove cover. 2. Remove four 2-pt. fan mounting Pozidriv screws. 3. Disconnect cable and remove fan. Tools Required • TX-15 screw driver • 2-pt. Pozidriv

8-24 Assembly and Disassembly ProceduresTransformer Removal Transformer Removal Done with top and bottom covers removed. 1. Do steps 1 through 8 of the A28 Power Supply Removal instructions. 2. Disconnect cables and remove transformer using illustration below. Tools Required • TX-15 screw driver • 2...

9-2 Replacing a PartIntroduction Introduction To order parts contact your local Agilent Technologies Sales and Service office. Assembly Replacements For most parts, you can either order a new assembly or an exchange assembly. Exchangeassemblies are factory-repaired, inspected, and tested. If you ord...

9-3 Replacing a Part Replaceable Parts Replaceable Parts The following tables and figures list part numbers for replaceable parts. For moreinformation or details of replaceable parts, contact your local Agilent Technologies Salesand Service Office.

9-28 Replacing a PartReplaceable Parts Table 9-14 Miscellaneous Replaceable Parts Item Agilent PartNumber C D Qty. Description Mfr. Code Mfr.Part Number 26,205-207 1400-0249 0 4 CABLE TIE 00000 ORDERBY DESCRIPTION 53 08590-80007 0 1 LBL WARNING-CRT 00000 ORDER BYDESCRIPTION 64,208 1400-1391 5 3 CLAM...

9-29 Replacing a Part Firmware Upgrades Firmware Upgrades In The Agilent 8922M HOST and GSM Firmware are upgraded using an external controller or PersonnalComputer. In The HP/Agilent 8922A, B, E, G, F, H, S The firmware for the HP/Agilent 8922A,B,E,G,F,H,S is grouped in single ROM sets.These sets ar...

10-2 Service Screen Introduction Introduction This chapter describes the fields on the service screen. The service screen is intended tosupport component level repair and the features are of greatest use with component leveldocumentation. Component level documentation is beyond the scope of this boo...

10-3 Service Screen Introduction 4. Counter Connection This field selects the frequency test point. The frequency will be counted and displayed inthe frequency field. 5. Gate Time This field selects the gate time used by the frequency counter. 6. Latch This field selects the data latch to be read or...

12-3 Module I/O Specifications A2 Audio Analyzer 2 A2 Audio Analyzer 2 Use extender card 08920-60142 Power Supplies Inputs AUDIO INPUT MUX DC AUDIO INPUT +5 V J1(21,22) 200 mA +12 V J1(19) 80 mA -12 V J1(20) 80 mA GND (Analog) J1(6,7,10,13,14,17,18) GND (Digital) J1(23,24,25,27) From A3 Audio Analyz...

12-4 Module I/O SpecificationsA2 Audio Analyzer 2 Outputs AUDIO OUT MEAS MUX SPEAKER To A19 Measurement Board AUD2_VM J1(11) Selected path = POS/NEG peak detectors. Input = FILT_AUD Response Time < 1 ms (Rise time) DC Offset < ± 15 mV Detector Range 0.424 to 5 V Peak Selected path = Pre Notch ...

12-5 Module I/O Specifications A3 Audio Analyzer 1 A3 Audio Analyzer 1 Use extender card 08920-60142. The Primary function of Audio Analyzers 1 and 2 is to provide oscilloscope functions. Power Supplies Inputs AUDIO INPUT MUX +5 V J1(21,22) 20 mA +12 V J1(19) 60 mA -12 V J1(20) 60 mA GND (Analog) J1...

12-6 Module I/O SpecificationsA3 Audio Analyzer 1 Outputs To Audio Analyzer 2 FIL_AUD J1(15) Output Z < 1 Ω Unit Gain Opamp Selected Inputs (DEMOD_AUD,MOD_MON,EXT_SCOPE, AUX_IN2, DET_LO) Total Path Accuracy 0.02 to 10 kHz ± 0.45 % 0.02 to 25 kHz ± 1.05 % 0.02 to 75 kHz ± 7.7 % 0,20,40 dB, No Filt...

12-7 Module I/O Specifications A3 Audio Analyzer 1 To A19 Measurement Board AUD1_VM J1(16) Output Z > 1 Ω Unity Gain buffer DC Offset < ± 9 mV Selected input =Range/Over-voltage detector Response Time < 1 ms (Rise time) DC Offset ± 15 mV Specified input range .29 to 5 Vp Accuracy ± 2% 20 Hz...

12-8 Module I/O SpecificationsA4 Modulation Distribution A4 Modulation Distribution Use extender card 08920-60141 Power Supplies Inputs AFG1 and AFG2 are both sine wave signals with the audio frequency set on the RFGenerator page, the attenuation takes place on the modulation distribution board. Too...

12-9 Module I/O Specifications A4 Modulation Distribution Outputs The output of AUDIO_OUT_HI can be set on the RF Analyzer page. To route the input signal AFG1 to the output AM_MOD, access the SERVICE Screen.Select the latch ’dstr_mod_destination’ and change the value to any odd number (forexample ’...

12-10 Module I/O SpecificationsA5 Premodulation Filter and NSM A5 Premodulation Filter and NSM Use extender card 08922-60132. Power Supplies Inputs Clock signal input is a square wave of duty cycle 50% and approximately 4.4Vp-p whenmeasured on an oscilloscope. To view on a spectrum analyzer, set cen...

12-12 Module I/O SpecificationsA5 Premodulation Filter and NSM Figure 4-1 Typical Oscilloscope Display Serial I/O Channel 1 = 500.0 mvolts/div Offset = 1.810 volts Trigger mode: Edge on positiveedge on Chan1 Timebase = 20.0 ns/div Delay = 0.000 s Trigger Levels Ch. 1 Parameters P-P Volts = 3.187 vol...

12-13 Module I/O Specifications A6 Signaling Source/Analyzer A6 Signaling Source/Analyzer Use extender card 08920-60140. Power Supplies Inputs +12 V J1(9) 21 mA +5 V J1(37,39,40) 650 mA -12 V J1(10) 41 mA D_Ground J1(13,14,31,32) A_Ground J1(2,7) From A2 Audio Ananlyzer 2 PROC_AUD J1(11) Input Imped...

12-15 Module I/O Specifications A9 Global Test and Demod A9 Global Test and Demod Use extender card 08922-60133. Power Supplies Inputs The 10.7 MHz is orginated from the A16 Receiver. It is down converted to 700 kHz ± 50 kHz within the Global Test and Demod assembly. To obtain a reading either with ...

12-16 Module I/O SpecificationsA9 Global Test and Demod Figure 4-2 Expected Output Channel 1 = 500.0 mvolts/div Offset = -50.00 volts Trigger mode: Edge on positiveedge on Chan1 Timebase = 20.0 ns/div Delay = 0.0000 s Trigger Levels Ch. 1 Parameters P-P Volts = 1.468 volts Chan1 = -50 mvolts Rise Ti...

12-17 Module I/O Specifications A9 Global Test and Demod Figure 4-3 on page 12-17 shows the expected oscilloscope reading. This signal can alsobe clearly seen on a spectrum analyzer. Figure 4-3 Expected Display From A15 Reference Section 20M_REF_A J1(11) Wave Shape: Sine Frequency: 20 MHz ± 1 ppm Re...

12-18 Module I/O SpecificationsA9 Global Test and Demod To set up this signal for measuring, follow the same procedure as for "10.7M_IF J1(7)",page 12-15, by running the RF Diagnostics. The signal can be seen on a spectrum analyzeror measured on an oscilloscope, see Figure 4-4 on page 12-18 ...

12-19 Module I/O Specifications A11 Receiver Mixer A11 Receiver Mixer No extender card required. Power Supplies Inputs NOTE: Ensure the reference setting and RF Analyzer are set to the same frequency. LO (Local Oscillator) Frequency will be 114.3 MHz or 614.3 MHz away from frequencyset on RF Analyze...

12-23 Module I/O Specifications A13 Output See "A4 Modulation Distribution", page 12-8 for measurement procedure. Outputs From A4 Modulation Distribution AM_MOD J2(7) Input Z 25 k Ω 5000 pF parallel shunt. Sensitivity 25% AM / V To A12 Pulse Attenuator (Coax jumper connection) MAIN_RF_OUT J3...

12-24 Module I/O SpecificationsA14 Pulse Driver A14 Pulse Driver Use extender card 08922-60129. Use coax jumpers on Plug 1, pins 3, 13 and 17. Plug 3, pins 3, 9 and 17. Power Supplies Inputs +15 V J2(2) -15 V J2(3) +5 V J2(4) Ground J3(1-2,4-8,10-16,18-20)J1(1,4,6-12,14,16,18-19) From A15 Reference ...

12-28 Module I/O SpecificationsA15 Reference Figure 4-6 Typical Display Figure 4-7 Typical Display To A14 Pulse Driver 1M_REF_C J3(2) Frequency: 1 MHz ± 5 Hz See Figure 4-7 onpage 12-28 Levels: CMOS Duty Cycle: 800 ns low, 200 ns high Amplitude ≅ 1 Vdc Waveshape square wave (not a true square wave) ...

12-32 Module I/O SpecificationsA16 Receiver A16 Receiver Use extender card 08922-60129. Use coax jumpers on Plug 1, pins 3, 7 and 13. Plug 3, pins 3, 9 and 13. Power Supplies Inputs CAUTION Connection must be T’ed and measurement line must have DC blockingcapacitor. Refer to "A11 Receiver Mixer&...

12-33 Module I/O Specifications A16 Receiver Outputs Figure 4-8 Typical Display To test Pulse Demod apply RF Carrier with AM modulation to RF Input, measure PulseDemod Out on oscilloscope ≅ 180 mV x %MOD NOTE: Ensure correct settings on RF Analyzer page (frequency/amplitude). If the RF Input levelis...

12-35 Module I/O Specifications A16 Receiver To A18 Spectrum Analyzer SA_114.3_M J3(13) Frequency: 114.3 MHz ± 5 MHz Level -20 dBm To A19 Measurement Assembly Voltmeter MUX AUX7_VM J2(7) Voltage range: ± 5 V

12-36 Module I/O SpecificationsA18 Spectrum Analyzer A18 Spectrum Analyzer Use extender card 08922-60129. Use coax jumpers on Plug 1, pins 3 and 17. Plug 2, pin 17. Power Supplies Inputs +12 V J2(2) 165 mA -12 V J2(3) 300 mA +5 V J2(4) 225 mA Ground J1(1,2,4-20) J3(1-16,18-20) From A16 Receiver (Nee...

12-38 Module I/O SpecificationsA19 Measurement A19 Measurement Use extender card 08920-60138. Power Supplies +5 V J1(15,16) J2(21,24) 420 mA +12 V J2(26) 120 mA -12 V J2(25) 120 mA +38 V J3(17) < 1 mA +12 V Aux J2(28) 0 mA

12-39 Module I/O Specifications A19 Measurement Inputs Voltmeter Multiplexer +5 J2(24,21) J1(15,16)+12 J2(26) - FM Motherboard+38 J3(17) - FM Motherboard -12 J2(25) +12 AUX J2(28) IN_TEMP J3(4) IN_VOLT J3(5)DET_LO J3(7)DET_HI J3(6)AUD1_VM J3(8) - FM Audio Analyzer 1AUD2_VM J3(3) - FM Audio Analyzer ...

12-40 Module I/O SpecificationsA19 Measurement Scope Multiplexer PROC_AUD J3(24) - FM Audio Analyzer 2 A2SA_SCP J3(23) - From Spectrum Analyzer A18RI_SCP J3(26) - From Spectrum Analyzer A18AUX_SCP J3(21)DET_LO InternalDET_HI InternalGROUND InternalCALIBRATION REFERENCE Internal No Minimum Input Max ...

12-41 Module I/O Specifications A19 Measurement Counter Inputs AUDIO1_CNT J1(6) - FM Audio Analyzer 1 A3RI_CNT J1(8)IN_CNT J1(5) - From Input Section A23IF_CNT J1(9) - From Global Board A9TIME BASE REF 20 MHz J3(29)MIXED_IF InternalSTRIG InternalGND Internal 20 MHz Time Base Standard The 20 MHz Sine...

12-42 Module I/O SpecificationsA19 Measurement Trigger Input Scope Trigger InternalSIGN_SCP_TRIG J1(10)RI_SCP_TRIG J1(7)EXT_TRIG J1(4)INTERNAL TRIGGER Internal Trigger Logic SIGN_SCP_TRIG HCMOS (Vih > 4 V, Vil < 1 V) RI_SCP_TRIG HCMOS EXT_TRIG HCMOS Maximum Input ± 15 V EXT_TRIG

12-43 Module I/O Specifications A23 Input (HP/Agilent 8922A.B,E,F,G,H) Only A23 Input (HP/Agilent 8922A.B,E,F,G,H) Only NOTE: Applies to Mechanical Attenuator only. No extender card required. Power Supplies Inputs To avoid removing bottom cover and motherboard covers, measure MAIN_RF_OUT onA13 outpu...

12-44 Module I/O SpecificationsA23 Input (HP/Agilent 8922A.B,E,F,G,H) Only Outputs From Front Panel RF IN/OUT Output J1 Freq Range .4 to 1000 MHz From Front Panel AUX RF OUT J2 Freq Range .4 to 1000 MHz Relative path loss with respect to siggen input,thru path (0 dB). .4 MHz Loss < 1 dB 1000 MHz ...

12-45 Module I/O Specifications A23 Input (HP/Agilent 8922A.B,E,F,G,H) Only Measure using known reference signal, refer to "A11 Receiver Mixer", page 12-19, forprocedure. To A11 Receiver Mixer 1st_MIX_IN J5 Freq Range .4 to 1000 MHz Output Level Normal − 12 dBm to − 22 dBm Underrange − 22 dB...

12-55 Module I/O Specifications A17, A26 Step Loop To A19 Measurement Board AUX1/2_VM J2(6) Voltage Range: -5 V to +5 V - typically +5 Vdcfor default/Preset settings

12-58 Module I/O SpecificationsA28 Power Supply A28 Power Supply This spec is for the complete assembly which includes the transformer and plug-in boards. Input ❒ Overvoltage protected. ❒ +21 Volts and +25 Volt supplies always on, all other supplies controlled with frontpanel power switch. ❒ Short c...

12-59 Module I/O Specifications A33 Hop Controller A33 Hop Controller Power Supplies Inputs Hop Control Input Bus +15 V J21(100) < 5 mA -15 V J21(40,59,60,61,91,92) 0 mA (not used) +5 V J21(99)J2(1) < 1 A Ground J21(17,18,42,43,56,69,87,93,94) HOP_ADDR J21(5-15) Amplitude: TTL levels High driv...

12-61 Module I/O Specifications A33 Hop Controller Host Processor Interface Outputs Front Panel Input PULSE_MOD_IN J21(68) ON latency: ≅ 25 µ S OFF latency: ≅ 10 µ S Amplitude: TTL levels High: No attenuation of sig gen output Low: Attenuate sig gen output High drive requirement: 100 µ A Low drive r...

12-62 Module I/O SpecificationsA33 Hop Controller Fast Hop Busses I/O Clock, Data, and Enable Slow Busses Clock, Data, and Enable INPUT SECTION J21(40,46,44)STEP LOOP/A J21(29,27,30)STEP LOOP/B J21(37,35,36)PREMOD FILTER & NSMJ21(25,23,26) Amplitude: TTL Levels Clock Rate: 1 MHz (bursted) RECEIV...

13-2 Instrument Block DiagramsIntroduction Introduction This chapter contains the block diagrams for the HP/Agilent 8922A/B/E/F/G/H/M/S.Additional information for troubleshooting to the block diagram level can be found in thefollowing chapters. Chapter 4, Using the Service Kit, explains how to use t...

14-3 Block Diagram Theory of Operation Technical Discussion Technical Discussion The HP/Agilent 8922 can be divided into two instruments, a signal generator and a signalanalyzer. This discussion is intended to follow the block diagrams in chapter 13. Theassemblies in Block Diagrams 1 and 2 are cover...

14-4 Block Diagram Theory of OperationBlock Diagram 1 Block Diagram 1 RF Analyzer Audio Analyzer Spectrum Analyzer A23 InputA24 High Power Attenuator The A23 Input assembly is both the input for the RF Analyzer section and the final outputfrom the RF Generator section. Additional information on how ...

14-6 Block Diagram Theory of OperationBlock Diagram 1 To measure this signal it is necessary to “tee” the connection so that the dc control voltageis always available to the A11 Receiver Mixer assembly from the A16 Receiver assembly.It is then possible to measure the dc voltages with an external vol...

14-9 Block Diagram Theory of Operation Block Diagram 2 Block Diagram 2 RF Generator AF Generator A15 Reference The A15 Reference assembly contains the circuits necessary to generate reference signalsfor the other assemblies in the HP/Agilent 8922. The A15 Reference assembly can belocked to an extern...

14-11 Block Diagram Theory of Operation Block Diagram 2 necessary to do manual troubleshooting to find out if the A5 Premod Filter and NSMassembly is correctly locking to these other clock signals. By using the service screen andviewing the latch (NSM_PMF_CLK), it can be determined if the loop is lo...

14-15 Block Diagram Theory of Operation Block Diagram 3 HP/Agilent 8922B Only Block Diagram 3HP/Agilent 8922B Only The HP/Agilent 8922B contains 3 modules: A35 “B” Reference; A36 FIFO/GPIO; andA37 Sequence Controller assemblies that are not used in either the HP/Agilent 8922A orHP/Agilent 8922G. The...

14-16 Block Diagram Theory of OperationBlock Diagram 3 HP/Agilent 8922B Only A37 Sequence Controller The A37 Sequence Controller assembly contains the switches which cause an HP/Agilent8922B to function like an HP/Agilent 8922B instead of an HP/Agilent 8922A. Activatingthe switches causes the Clock,...

14-17 Block Diagram Theory of Operation Block Diagram 4 Block Diagram 4 This block diagram illustrates the assemblies that are unique to the HP/Agilent 8922E/F/G/H. These modules are primarily digital and represent the hardware necessary to createthe digital protocol to set up and maintain a phone c...

14-18 Block Diagram Theory of OperationBlock Diagram 5 Block Diagram 5 This block diagram illustrates the busses that interconnect the instrument controllers (A7Controller, A32 GSM Controller, A34 GSM RTI, and A37 Sequence Controller) with theother assemblies. Chapter 5 “Troubleshooting the Controll...

15-3 Diagnostics Theory AF_DIAGS AF_DIAGS Audio Frequency Generators 1 and 2 This test checks the A6 Signaling Source/Analyzer assembly. As a test signal, a digital “1”exercises DACs on the output of the A6 Signaling Source/Analyzer assembly to verifyvoltage range, using the voltmeter at the LFS1_VM...

15-5 Diagnostics Theory RF_DIAGS RF_DIAGS Reference This test checks the A15 Reference Section assembly. 10 MHz Lock Detector State The 10 MHz VCO is measured using the counter; however, the counter uses the referenceso the measurement is an indication that the counter is working. This verifies that...

15-7 Diagnostics Theory RF_DIAGS Open Loop ALC Drive This test opens the ALC loop and checks the voltage that appears on the output of themodulator with the DAC at full scale, measured at the OUT_ALC_DRIVE using thevoltmeter referenced to the -6 Vdc measurement. Output Detector, Detector Caps The ou...

15-8 Diagnostics TheoryRF_DIAGS RF Detectors 1 The low and high sensitivity detectors are checked both with and without a signal present. Step Attenuator The step attenuator is checked by switching in one pad at a time. RF Detectors 2 The filter output detector is checked with no signal present. Fil...

15-9 Diagnostics Theory RF_DIAGS RF Analyzer Loop 1 MHz Reference Detector This test checks for the presence of the 1 MHz reference. RF Analyzer Loop Lock Detector This test checks the loop for lock at several frequencies. Loop B Output Detector This test checks the level detector at several frequen...

15-11 Diagnostics Theory MS_DIAGS MS_DIAGS External Reference Ext Reference Present Detector The external reference detector is read. Ext Reference Lock Detector The 10 MHz loop lock detector is read. Ext Reference Lock Out; the external referencelock out is checked by locking out the external refer...

15-12 Diagnostics TheoryGSM and DCS Diagnostic Tests GSM and DCS Diagnostic Tests Each of these tests performs a functional check on the instrument by generating a testsignal and looping the signal back to the measurement hardware. The tests with titles beginning with E are for use with an HP/Agilen...

15-13 Diagnostics Theory Interpreting Results Interpreting Results When a failure occurs, a message is displayed showing the number of failures and theprobability that the failure is caused by the assembly being tested. If the probability is nothigh, more measurements may be necessary to verify the ...

16-2 Measurement TheoryIntroduction Introduction This chapter describes which blocks of the instrument are used in the variousmeasurements. The measurements described include the following: • BIT ERROR • DSP ANL • OUT RF SP • PULSE • CW MEAS/AF ANL • SCOPE • SPEC ANL The descriptions are given in te...

16-3 Measurement Theory Introduction DSP ANL • A23 Input • A11 Receiver Mixer • A16 Receiver • A9 Global Test and Demod The DSP analyzer measurements digitally analyze the signal under test. The signal isleveled and converted to a 10.7 MHz IF and routed to the A9 Global Test and Demodassembly where ...

17-3 GSM Theory The GSM System The GSM System The GSM system uses two frequency bands ranging from 890 to 915 MHz and935 to 960 MHz. The bands are broken into 125 channels spaced 200 kHz apart. The GSM system uses one band to transmit and one to receive. The lower frequency band(890-915 MHz) is used...

Index-1 Symbols ”B” Reference theory, 14-15 Numerics 1 GHz and 500 MHz Level Detectors theory, 15-5 1 GHz Oscillator Lock Detector State theory, 15-5 10 MHz Fine and Coarse DACs State theory, 15-5 10 MHz Lock Detector State theory, 15-5 13 MHz Oscillator Lock Detector theory, 15-7 A A1 part number, ...