HP 8648 A/B/C/D - Changpuak.ch

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Internal Reference Oscillator Adjustment 5. Follow the instructions on the signal generator’s display and adjust the knobs until the frequency counter reads 100 MHz within 1 Hz resolution. 6. When the adjustment is complete, turn off the signal generator. 7. Set the rear-panel TIMEBASE ADJUST swit<strong>ch</strong> to off (0). Adjustments 7-5
Pager Encoder Timebase Frequency Adjustment 7-6 Adjustments Use this procedure to adjust the pager encoder timebase frequency. Required Test w <strong>HP</strong> 5334B Option 010 Universal Counter Equipment Procedure 1. Turn off power to the signal generator. 2. Remove the instrument cover. 3. Connect the MOD INPUT/OUTPUT connector of the signal generator to the input of the universal counter as shown in Figure 7-4. [PUT UNIVERSAL COUNTER J an64abc Figure 7-4. Pager Encoder Timebase Frequency Adjustment Setup 4. 5. 6. 7. 8. 9. Turn on power to the signal generator and let it warm up for one hour. Enter the pager encoder mode by pressing (FM) (ENCODER) twice. (If FM was the last active function, only press the (FM) (ENCODER) key once.) Rotate the AMPLITUDE/ENCODER knob to set FORMAT to SERVICE. Press ($j (NEXT) and rotate the AMPLITUDE/ENCODER knob to set CALIBRATIONFSK to3200/2. Press @KKK) (START/STOP) to turn the encoder output on. The universal counter should now read close to 1600 Hz. Adjust the variable capacitor on the encoder timebase (labeled “TIMEBASE ADJUST 1EP” in Figure 7-5) until the frequency on the universal counter reads 1600 Hz rtO.0016 Hz.
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Operation and Service Guide HP 8648
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Certification Warranty Hewlett-Pack
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Instrument Support Center Hewlett-P
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General Safety Considerations Warni
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Contents 1. Operation Quick Overvie
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Message During Servicing . . . . .
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POWer Subsystem . . . . . . . . . .
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AM Modulator . . . . . . . . . . .
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Figures 2-l. HP 8648 Status Registe
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7-68. Using the Open Dialog Box to
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8-29. AM Accuracy Performance Test
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Operation “Operation” contains
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The following table describes the p
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7. Modulation Source Press CMOD ON/
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Operation Examples This section pro
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Turn on the RF Output 3. Press C-1
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Using the Increment 3. Enter a freq
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Saving Instrument In this ten step
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egseq9.dw la-l 0 Operation Examples
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I Deleting a Register In this examp
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Renumbering the In this example, yo
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Inserting a Register in In this exa
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Offsetting the RF Output from a Ref
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la-20 Operation Examples 6. Change
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la-22 Operation Examples Adjusting
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Setting the Modulated 2. Press the
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Setting Up Pager The following step
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Selecting the Data 3. Set DATA RATE
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Selecting the Pager Capcode (Addres
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Selecting the Roaming 11. Set ROAMI
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Frequency/Amplitude Frequency and A
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Function Function hmckeys.drw 1. FR
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Function Setting Up the Pager Encod
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Function Setting the Format The for
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Function lb-10 Operation Reference
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Function I- / I I / 1’gMRl 0 non
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Function 1 b-22 Operation Reference
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Function mmiii\ FREQUENCY 1 b-32 Op
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Function PN15 Setting the Data Rate
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Pulse Modulation Pulse Modulation N
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Increment Set Increment Set 1 b-38
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1 b-40 Operation Reference 2. Backs
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Instrument Preset lb-42 Operation R
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Instrument Preset 1 b-44 Operation
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Memory Memory The memory keys allow
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Memory 3. Register Recall The recal
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Modulation Source Modulation Source
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Modulation Source Note 5. EXT AC EX
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RF output RF Output 1. RF ON/OFF Pr
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Rear Panel Operation Rear Panel 1.
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Remote Interface Remote Interface (
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Memory Interface Memory Interface (
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Operation Messages Front Panel Oper
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011 017 Amplitude exceeds ATTN HOLD
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HP-IB - Command Errors -101 -102 -1
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HP-IB Execution Errors HP-IB Device
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HP-IB Programming Background This s
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Programming Examples Examples are p
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Programming Pager 188 I~IJTF’IJT
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Command Statement Description Query
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%ble 2-1. Programming Command State
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‘Ihble 2-1. Programming Command S
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Ftwer6e Pwmr UnspecMed Amplkde Ext.
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Example: Generate a Service Request
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Unspecified Power This instrument p
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Line 50 Clears all status registers
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ABORt Subsystem ABORt (Option 1EP O
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Note FM Subsystem To set or change
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PAGing Subsystem [SOURceI (Option 1
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The contents of data to be filled i
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Note The data to be sent by the :DE
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[SOURce] : PAGing C : FORMatI :{FLE
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[SOURceI : PAGing C : FORMat] :
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[SOURceI :PAGing [:FORMat] :(FLEXIF
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PM Subsystem [SOURceI :PM [:DEViati
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STATUS Subsystem STATUS :QUEStionab
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Changing Parameters While Encoding
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HP-IB Capabilities The instrument i
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HP 8656157 Compatible Language The
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9-0~till Code* RC RL RP RO Rl R2 R3
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Installation Unpacking Your 1. Unpa
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Replacing the Fuse If a fuse failur
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Turning On the Signal Generator Con
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Specifications Options This chapter
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output 10 MHZ, typically > 0.5 Vm l
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Nonharmonics (2 5 kHz offset, < + 4
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Resolution < 2001 MHz 2 2001 MHz De
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Environmental Operating temperature
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output Front Panel BNC Nominally 1
Page 195 and 196: Regulatory Information IS0 9002 Com
Page 197 and 198: Service Ship]ping Your This chapter
Page 199 and 200: Instrument rrequency Counter +equen
Page 201 and 202: Post-Repair ‘able 5-2. Adjustment
Page 203 and 204: ‘Ihble 5-3. Adjustments and Perfo
Page 205 and 206: Theory of Operation Introduction Us
Page 207 and 208: Overview The HP 8648A/B/C/D signal
Page 209 and 210: A2 Power Supply The power supply is
Page 211 and 212: A6 Output (HP 8648A) The output ass
Page 213 and 214: A 13 Pulse Modulator (HP 8648B/C/D
Page 215 and 216: Troubleshooting Checklist 0 Li Ll D
Page 217 and 218: Modulation Test Points and Power Su
Page 220: jA30 PAGER ENCODER (OPT 1EP) ! ,~,
Page 224 and 225: 502 Service Error Messages 506 Desc
Page 226 and 227: 5c-4 Service Error Messages 512 Des
Page 232 and 233: Replaceable Parts Introduction Asse
Page 234 and 235: Al AlAl AlA AlA AlA AlJl AlMPl 41MP
Page 236 and 237: w14 WI5 W16 w17 Wl8 Item able 6-1.
Page 238 and 239: I ,I/.” All MI-LO LIP12 I MP25 Fi
Page 240 and 241: A10 All Al2 Al3 Al4 Bl Fl MPl MP2 M
Page 242 and 243: Adjustments This chapter documents
Page 244 and 245: 2 Crimp , Connector ( 6 ) &Pin Conn
Page 248 and 249: Pager Encoder Timebase Frequency Ad
Page 250 and 251: AM Level and Distortion HP 86488 On
Page 252 and 253: AM Level HP 8648B/C/D Only Descript
Page 254 and 255: Detector Offset HP 8648A Only Descr
Page 256 and 257: AM Level: FE HP 8648B/C/D Only (Not
Page 258 and 259: Predistortion and Detector Offset H
Page 260 and 261: Output Level: Frequency Extension C
Page 262 and 263: A3 Motherboard Figure 7-21. Locatio
Page 264 and 265: Motherboard Audio Path All HP 8648A
Page 266 and 267: DCFM All HP 8648A/B/C/D Description
Page 268 and 269: HF Power Level Accuracy All HP 8648
Page 270 and 271: 1 \ # I J @g@ ggjJ;o P~EEB~B~QH 6dB
Page 272 and 273: LF Power Level Accuracy All HP 8648
Page 274 and 275: FSK Deviation Option 1EP Only FSK D
Page 276 and 277: Service Support Software The Servic
Page 278 and 279: 4. Continue with the setup by selec
Page 280 and 281: Note 8. Continue with the setup by
Page 282 and 283: emember, you must restart MS Window
Page 284 and 285: 2. Once the User Information dialog
Page 286 and 287: d. Select the Add button to add the
Page 288 and 289: Running the Tests and Adjustments ,
Page 290 and 291: Printing the Test and Adjustment Re
Page 292 and 293: . In the Password field (item 2), t
Page 294 and 295: in measurements using the power sen
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Editing Test Equipment Editing of t
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j&tapsckt... Test Equipment... Prin
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Removing Device Drivers Removal of
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Figure 7-63. Adding a Test Driver U
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Adding Datapacks The addition of da
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Removing Datapacks Removal of datap
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HP-IB Address In the HP8648 Motherb
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FhRud hth Ih* PDllam 0°C 1 you ham
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Caution “lea tdaMtion , RoEoed -
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Performance lksts Calibration Cycle
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HP 438 Power Meter Instrumentation
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Performance Tkst Descriptions The p
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Connect the Test Equipment Note Con
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HP 8648B/C/D Option lE2 Only Connec
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‘l&t Record HP 8648BKYD Only Conn
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AM Accuracy Performance Tkst (Optio
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Phase Modulation Distortion Perform
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Residual FM Performance Test Connec
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Harmonics Performance Tkst Connect
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DC FM Frequency Error Performance T
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Configure the HP 8648 1. Turn the R
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‘I&ble 8-1. High Power Level Accu
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Pulse Modulation Rise Time Performa
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Pager Encoder Timebase Accuracy Per
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Note FSK Deviation Accuracy Perform
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Symbol 0 0 0=0-Q Marker Desired Dev
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Internal Timebase: Aging Rate Perfo
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Measure the Phase Change Time Note
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Power Level Accuracy Performance Te
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HP 8648A ‘l&t Record ‘lhble 8-3
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‘able 8-5. FM Accuracy Performanc
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‘Ihble 8-7. FM Distortion Perform
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Amplitude (am) -6 HP 8648A Test Rec
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EIP 8648A Test Record Table 8-9. AM
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RF Frequency HP 8648A (MW 10 100 24
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Amplitude WW 4 -6 ‘able 8-14. Spu
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HP 8648A Test Record Note If the au
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EIP 8648A Test Record ‘able 8-16.
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Frequency NW 999.9 HP 8648A Test Re
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HP 8648B ‘I&t Record ‘able 8-20
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RF Frequency HP 8648B WW 1500 1500
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HP 8648B Test Record ‘Ihble 8-26.
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HP 8648B Test Record ‘I’kble 8-
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BP 8648B Test Record ‘Ihble 8-29.
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IIP 8648B Test Record ‘Ihble 8-31
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‘Ihble 8-35. Spurious Performance
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EIP 8648B Test Record Note If the a
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Frequency WW 400 HP 8648B Test Reco
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HP 8648B Test Record ‘able 8-37.
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HP 8648B Test Record If the automat
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HP 8648B Test Record ‘Ihble S-43.
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HP 8648C Test Record I%ble 8-46. HP
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HP 8648C Test Record 8-88 Performan
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FIP 8648C Test Record E-90 Performa
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HP 8648C Test Record 8-l 00 Perform
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HP 8648C Test Record E-102 Performa
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HP 8648C Test Record E-104 Performa
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BP 8648C Test Record Note If the au
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IIP 8648C Test Record E-108 Perform
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ElP 8648D Test Record ‘Ihble 8-71
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HP 8648D Test Record I I I I 1500 1
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HP 8648D Test Record RF Frequency H
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HP 8648D Test Record 8-l 16 Perform
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EIP 8648D Test Record 8-l 18 Perfor
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HP 8648D Test Record 8.120 Performa
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EIP 8648D Test Record 8-l 24 Perfor
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HP 8648D Test Record 8-128 Performa
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HP 8648D Test Record 8.130 Performa
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Supplemental Verification Tksts The
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CW Frequency Accuracy Supplemental
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Test Record 9 kHz RF’ Level Accur
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Index A Al theory of operation, 5a-
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computer requirements, 7-35 configu
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INT 1 kHz, lb-51 INT 400 Hz, lb-51
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HP 8648B/C/D, 5-5 power, 3-2 cable,
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T service information, 5-l support
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U uninstalling the software, 7-41 u
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HP 8648 A/B/C/D - Changpuak.ch

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