HP 8568B Instrukcja Użytkownika Strona 165
- Strona / 313
- Spis treści
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Oceniono. / 5. Na podstawie oceny klientów
3. Preliminary Display Adjustments (SN 3001A and Below)
28. Set the oscilloscope controls as follows:
Press
@iK]:
Channel 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . on
amplitude scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.6.25 V/div
Press
@iZZQ.
29. Adjust AlA4R7 X POS and AlA5R7 Y POS to either extreme to
position the CRT beam off-screen (to prevent possible damage to
the CRT phosphor). If it is not sealed, adjust
AlA2R5 INT GAIN
fully clockwise.
30. Adjust the spectrum analyzer’s front-panel INTENSITY control for
50V
peak-to-peak (8 divisions) as indicated on the oscilloscope.
See Figure 3-22.
1
8.00
V/div
offset:
45.00 v
10.00 : I dc
125.000
ns
375.000
ns
50.0
ns/dlv
1
f
50.00 v
Figure 3-22. 5OV,, Signal
31. Adjust AlA2R22 HF GAIN and
AIABCIO
for minimum overshoot
on rise and minimum rise and fall times of the pulse waveform.
32. Use the oscilloscope
[ml
markers to measure the risetime,
falltime, and percent overshoot of the pulse waveform. Rise
and falltimes should be less than 50 ns and 90 ns respectively.
Overshoot on
the rise should be less than 5% (approximately 0.4
divisions).
33. Set
the spectrum analyzer’s LINE switch to STANDBY, and center
potentiometers
AlA4R7 X POSN and AlA5R7 Y POSN.
34. Disconnect the oscilloscope channel 1 probe from the spectrum
analyzer. Remove
the Display Adjustment PC board from the
A3A2
slot, and reinstall the
A3A2
Intensity Control Assembly.
Replace the
A3
Section cover and cables.
35. Perform Adjustment Procedure 4, Final Display Adjustment (SN
3001A
and Below).
Adjustments 3-51
- HP Part No. 08568-90118 1
- Printed in USA 1
- September 1993 1
- Certification 3
- Warranty 3
- Assistance 4
- Safety Symbols 5
- General Safety 5
- Spectrum Analyzer 6
- Documentation 6
- Contents 7
- Contents-2 8
- Contents-3 9
- Contents-4 10
- Contents-6 12
- Contents-7 13
- Information 15
- Operation Verification 16
- Option 462 16
- Instruments 16
- Option 857 16
- General Information 1-3 17
- 2 to 22 18
- General Information 18
- HP85662-60088 20
- General Information 21
- Performance 23
- Equipment Required 24
- Test Record 24
- 1. Center 25
- Frequency Readout 25
- Performance Tests 2-5 27
- 2. Frequency Span 28
- 2-8 Performance Tests 30
- 3. Sweep Time 31
- Sweep Times 220 ms 32
- Performance Tests 33
- 2-12 Performance Tests 34
- 4. Resolution 35
- 2-14 Performance Tests 36
- 2-16 Performance Tests 38
- Performance Tests 2-17 39
- 6. Resolution 40
- Performance Tests 2-21 43
- 8. Frequency 44
- Response Test 44
- 2-24 Performance Tests 46
- to 20 MHz 47
- 50
- CLEAR-WRITE) 51
- 9. RF Gain Uncertainty Test 54
- 10. IF Gain 55
- 10 dB Gain Steps 56
- Performance Tests 2-35 57
- 2 dB Gain Steps 58
- 0.1 dB Gain Steps 59
- 2.38 Performance Tests 60
- 12. Amplitude 63
- 2-42 Performance Tests 64
- Linear Fidelity 65
- 2-44 Performance Tests 66
- 13. Average Noise 67
- 2-46 Performance Tests 68
- 14. Residual 69
- 15. Spurious 71
- Performance Tests 2-51 73
- Intermodulation 74
- Distortion 74
- GENERAToRS 75
- Performance Tests 2-55 77
- 16. Residual FM 78
- 2-58 Performance Tests 80
- Performance Tests 2-59 81
- 17. Line-Related 82
- Sidebands Tests 82
- Performance Tests 2-61 83
- 18. Calibrator 84
- 19. Fast Sweep 85
- Time Accuracy 85
- SEARCHJ@~EFZF),~ 86
- [FREQUENCY SPAN) to 0 Hz 86
- Performance Tests 2-65 87
- LO Output 88
- Amplitude Test 88
- 21. Frequency 89
- 1. Center 92
- ‘I&t 2. Frequency 93
- Span Accuracy Test 93
- Test 3. Sweep 94
- ‘I&t 4. Resolution 95
- (VIDEOBW] 96
- 6. Resolution 97
- Test 7. Input 98
- Attenuator 98
- 8. Frequency 99
- Test 9. RF Gain 100
- Uncertainty Test 100
- Test 10. IF Gain 101
- Performance Tests 102
- Step 24 103
- Step 23 103
- 11. Log Scale 104
- Switching 104
- Uncertainty 104
- Test 12. Amplitude 105
- Fidelity ‘I&t 105
- Test 13. Average 106
- Noise Level Test 106
- Test 14. Residual 107
- Responses Test 107
- 15. Spurious 108
- Responses 108
- Test 16. Residual 109
- Line-Related 110
- Sidebands Test 110
- Test 18. Calibrator 111
- Amplitude 111
- Accuracy ‘I&t 111
- Test 20 113
- Output Amplitude 113
- Test 21. Frequency 114
- Reference Error 114
- Warning 115
- Considerations 116
- Equipment 116
- Required 116
- Adjustment Tools 116
- Factory-Selected 117
- Components 117
- 3-4 Adjustments 118
- Adjustments 3-5 119
- Adjustments 3-7 121
- 3-8 Adjustments 122
- Adjustments 3-9 123
- Adjustments 124
- Adjustments 3-11 125
- 3-12 Adjustments 126
- Adjustments 3-13 127
- 3-14 Adjustments 128
- Adjustments 3-15 129
- Adjustments 3-17 131
- 3-18 Adjustments 132
- Adjustments 3-19 133
- Adjustments 3-21 135
- 3-22 Adjustments 136
- Adjustments 3-23 137
- 3-24 Adjustments 138
- 1. Low-Voltage 139
- Power Supply 139
- Adjustments 139
- 4. Connect the DVM to 140
- 6. Connect the DVM to 140
- RF Section 141
- 3-28 Adjustments 142
- Reference 143
- Description 143
- High-Voltage 144
- Adjustment Procedure 144
- Adjustments 3-3 1 145
- EXAMPLE: 146
- Focus and Intensity 147
- 3-34 Adjustments 148
- 60.00 v 149
- 3-36 Adjustments 150
- Adjustments 3-37 151
- 3-38 Adjustments 152
- Adjustments 3-41 155
- Discharge Procedure 157
- 3-44 Adjustments 158
- 3. Preliminary 159
- Adjustments (SN 159
- 3001A and Below) 159
- Procedure 160
- X and Y Deflection 160
- Amplifier Pulse 160
- Response Adjustments 160
- ~000uu000000u00ur 161
- Pulse Response of 164
- Control Gate Z 164
- Amplifier to BLANK 164
- 45.00 v 165
- 3004A and Above) 166
- 3-54 Adjustments 168
- Pulse Response of 21 171
- Input 22 171
- 3-58 Adjustments 172
- 4. Final Display 175
- 3-62 Adjustments 176
- Adjustments 3-63 177
- 3-64 Adjustments 178
- 5. Log Amplifier 179
- 5. Adjust 180
- 3.66 Adjustments 182
- 6. Video Processor 183
- Adjustments 3-7 1 185
- Related Performance 186
- 3-74 Adjustments 188
- Adjustments 3-75 189
- 3-76 Adjustments 190
- Adjustments 3-81 195
- 3-82 Adjustments 196
- A level should indicate 0.00 197
- Bandwidth 198
- Adjustments 3-85 199
- 20. Key in 203
- Adjustments 3-89 203
- Adjustments 3-91 205
- 11. Down/Up 206
- Converter 206
- Optional 207
- Down Converter Gain 208
- Adjustment 208
- 3-98 Adjustments 212
- 12. Time Base 213
- Adjustment (SN 213
- 3217A05567) 213
- (CLEAR-WRITE) 214
- MATH (SELECT/ENTER] 215
- 3-102 Adjustments 216
- Adjustments 3-l 09 223
- Second IF Amplifier 227
- 3-114 Adjustments 228
- Third Converter 229
- 18. Frequency 233
- Start-Up Time 234
- Slow Sweep 234
- DACS 1023.) 235
- START and STOP 236
- FM SPAN Adjustment 236
- Second LO Frequency 238
- Adjustments 3-125 239
- Second Converter 240
- Bandpass 240
- 42. Key in 241
- Adjustments 3-127 241
- 3-128 Adjustments 242
- Final Adjustments 243
- Voltage-Tuned 244
- Oscillator 244
- DACS Accuracy Check 245
- Positive Supply 245
- Adjustments 3-135 249
- Procedure 1 251
- 3-138 Adjustments 252
- Standard Procedure 254
- Alternate Procedure 255
- Adjustments 3-143 257
- 3-144 Adjustments 258
- 25. Digital Storage 259
- 3-146 Adjustments 260
- 0.000 V 261
- 0.000 v 261
- X and Y Offset and 262
- Gain Adjustments 262
- Final Graticule 263
- X and Y Expand 263
- Low-Noise DC 264
- Crystal Filter 265
- Bypass Network 265
- Configuration 265
- Resolution 267
- Bandwidth 267
- Accuracy Test 267
- 4. Impulse and 269
- Resolution 269
- Accuracy 269
- Option 462 271
- 4-8 Option 462 273
- Option 462 4-9 274
- Selectivity Test 275
- 4-12 Option 462 277
- Related Adjustment 281
- Specification 281
- I I I I I I I 282
- 4-18 Option 462 283
- Option 462 4-19 284
- 4-20 Option 462 285
- Option 462 4-21 286
- 4-22 Option 462 287
- Option 462 4-23 288
- Option 462 4-25 290
- A indication of 1.5 kHz while 291
- 9. Impulse 292
- A indication of 500 kHz while 293
- A indication of 150 kHz while 293
- A annotation indicates 1.00 294
- 12. Option 857 296
- Amplitude Fidelity 296
- 5-4 Option 857 298
- Option 857 5-5 299
- 5-6 Option 857 300
- Performance Test 301
- Test 12. Option 302
- 857 Amplitude 302
- Fidelity Test 302
- Option 857 5-9 303
- IF-Display Section 304
- Figure Index 304
- RF Section Figure 305
- RF Section, Top View 307
- and Above) 311
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