HP 8901B

Model 8901B Adjustments
Supply
Adjustment 1
Voltage Limits (Vdc)
Maximum
Test Point I
POWER SUPPLY
Service Sheets 31 and 32
Description
The +15V supply is adjusted, and the other supplies, which are dependent upon it, are checked.
Equipment
Digital Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 3455A
Procedure
1. Set the voltmeter to measure +15 Vdc. Connect its input to AlOTP3 (+15V SW).
2. Adjust A10R24 (+15V) for +14.99 to f15.01 Vdc at AlOTP3.
3. Check the other supplies with the voltmeter
as indicated in the following table.
A1 OTP4 -15.2 -14.8
-5v A1 OTP6 -5.2 -4.9
+40V A1 OTP7
+42.5
A1 OTP5
Adjustment 1 5-5