HP 8560A, Руководство по обслуживанию

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3. IF Adjustment
Table 2-6. Factory-Selected LC Filter Capacitors
1 CC CTR Adjustment Fixed Factory Select Capacitor
LC CTR
1
LC CTR 2
LC CTR 3
LC CTR 4
Table 2-7. LC Factory-Selected Capacitor Selection
DVM Reading (V)
0 to 1.5
1.5
to 2.5
2.5 to 3.5
3.5 to 4.5
4.5 to 5.5
5.5 to 6.5
6.5 to 7.5
7.5 to 8.5
8.5 to 9.5
9.5 to 10
Replace
6.8 with:
*
18
15
10
8.2
no change
no change
*
*
*
Replace
8.2 with:
*
18
15
12
10
no change
no change
6.8
*
*
Loaded Value
Replace
10 with:
*
*
Replace
12 with:
*
*
18 18
15 15
12 15
no change no change
no change no change
8.2 10
6.8 8.2
6.8 8.2
Replace
15 with:
*
*
*
18
18
no change
no change
12
12
10
* Indicates a condition that should not exist; suspect broken hardware.
Replace
18 with:
*
*
*
*
*
no change
no change
15
15
12
XTAL Adjustments
13. On the HP press 1 and
14. Move the positive DVM test lead to
the HP press
ADJ CURR IF STATE.
Wait for the
IF ADJUST STATUS
message
to
disappear before continuing to the next step.
16. Read the voltage displayed on the DVM. If the voltage is less than Vdc, turn
XTAL CTR 1 clockwise. If the voltage is greater than Vdc, turn XTAL
CTR 1 counterclockwise.
17. Repeat steps 15 and 16 until the voltage reads Vdc
2-22 Adjustment Procedures