HP 8568B Performance Tests And Adjustments Manual page 124

Reference Adjustment
Designator Name
E
D
C
B
ZERO
400 MHz OUT
400 MHz OUT
400 MHz OUT
100 MHz
FREQ ADJUST
PWR ADJUST
+ 22V ADJUST
50 kHz NULL
50 kHz NULL
165 MHz NULL
160 MHz NULL
170 MHz NULL
160 MHz PEAK
VCO ADJ
160 MHz PEAK
160 MHz PEAK
150 MHz ADJ
100 MHz ADJ
5 MHz SCAN
Al lA2R2
Adjustment
Number
21
Adjusts tracking at 18.6 GHz (18.6 to 22).
21
Adjusts tracking at 12.5 GHz (12.5 to 18.6).
21
Adjusts tracking at 5.8 GHz (5.8 to 12.5).
21 Adjusts tracking at 4 GHz (2 to 5.8).
21 Sets SWEEP + TUNE OUT zero indication.
21 Sets -9 V and +9 V dc reference supplies.
14
Peaks 400 MHz output signal.
14 Peaks 400 MHz output signal.
14 Peaks 400 MHz output signal.
14
Adjusts VCXO frequency.
15 Adjusts VCO frequency.
15 Adjusts VCO output level.
1 Sets +22 V de supply voltage.
17 Nulls 50 kHz output.
17 Nulls 50 kHz output.
17 Nulls signal at 165 MHz.
17 Nulls signal at 160 MHz.
17 Nulls signal at 170 MHz.
17 Peaks 160 MHz output signal.
Adjusts PLL3 VCO frequency.
17
17 Peaks 160 MHz output signal.
17 Peaks 160 MHz output signal.
Adjusts VCO TUNE voltage at 150 MHz.
17
Adjusts VCO TUNE voltage at 100 MHz.
17
Sets discriminator pretune at 0.2 MHz.
17
17 Sets discriminator pretune at 0.3 MHz.
17 Adjusts frequency span accuracy (20130 sweep).
Adjusts frequency span accuracy (20/30 sweep).
17
Adjusts CIA amplifier gate biasing.
16
Adjustment Function