HP 8568B manual ‘Ihble 3-2. Adjustable Components Reference Designator, Adjustment Name Number

‘Ihble 3-2. Adjustable Components (continued)

Reference Designator

A6A12R82

A6A12R83

A6A12R84

A6A12R85

A6A12R98

A6A12R113

A7A2C 1

A7A2C2

A7A2C3

A7A2C4

A7A4AlAlCl

A7A4AlAlC5

A8R2

AlOAlL7

A10AlL8

AlOASLll

AlOA3L12

AlOA3L13

AlOA4C50

AlOA4Lll

AlOA4L16

AlOA4L17

AlOA5R2

AlOA5R4

AlOA8R4

AlOA8R9

AlOA8R25

AlOA8R27

Adjustment	Adjustment
Name	Number
E	21
D	21
C	21
B	21
ZERO	21
-9v	21
400 MHz OUT	14
400 MHz OUT	14
400 MHz OUT	14
100 MHz	14
FREQ ADJUST	15
PWR ADJUST	15
+ 22V ADJUST	1
50 kHz NULL	17
50 kHz NULL	17
165 MHz NULL	17
160 MHz NULL	17
170 MHz NULL	17
160 MHz PEAK	17
VCO ADJ	17
160 MHz PEAK	17
160 MHz PEAK	17
150 MHz ADJ	17
100 MHz ADJ	17
.2 MHz	17
.3 MHz	17
.5 MHz SCAN	17
5 MHz SCAN	17

Adjustment Function

Adjusts tracking at 18.6 GHz (18.6 to 22). Adjusts tracking at 12.5 GHz (12.5 to 18.6). Adjusts tracking at 5.8 GHz (5.8 to 12.5). Adjusts tracking at 4 GHz (2 to 5.8).

Sets SWEEP + TUNE OUT zero indication. Sets -9 V and +9 V dc reference supplies.

Peaks 400 MHz output signal.

Peaks 400 MHz output signal.

Peaks 400 MHz output signal.

Adjusts VCXO frequency.

Adjusts VCO frequency.

Adjusts VCO output level.

Sets +22 V de supply voltage.

Nulls 50 kHz output.

Nulls 50 kHz output.

Nulls signal at 165 MHz.

Nulls signal at 160 MHz.

Nulls signal at 170 MHz.

Peaks 160 MHz output signal.

Adjusts PLL3 VCO frequency.

Peaks 160 MHz output signal.

Peaks 160 MHz output signal.

Adjusts VCO TUNE voltage at 150 MHz. Adjusts VCO TUNE voltage at 100 MHz.

Sets discriminator pretune at 0.2 MHz. Sets discriminator pretune at 0.3 MHz.

Adjusts frequency span accuracy (20130 sweep). Adjusts frequency span accuracy (20/30 sweep).

Al lA2R2

;ATE BIAS ADJ

16

Adjusts CIA amplifier gate biasing.

3-10 Adjustments