16
Table 2-3. Guide to Recalibration After Repair
Printed Circuit
Board
Block Name Circuit Within Ref.
Designator
Perform These
Procedures*
A1 Main Board R11
R13 (6011A)
3 then 4
A1 Main Board T1, T2 5
A5 Diode Board CR4
CR5, CR1 (6011A)
5
A2 Control Board Constant Voltage
(CV) Circuit
All Except Current
Source
All 1 then 2
A2 Control Board Constant Voltage
(CV) Circuit
Current Source All 6
A2 Control Board Constant Current
(CC) Circuit
All 3 then 4
A2 Control Board Power Limit
Comparator
All 5
A2 Control Board Bias Power Supplies ± 15V Supplies All All
A2 Control Board U7, R84, R85, R24 7
* Code To Calibration Procedure To Be Performed
1. V-MON Zero Calibration
2. Common-Mode Calibration
3. I-MON Zero Calibration
4. I-MON Full Scale (F/S) Calibration
5. Power Limit Calibration
6. Resistance Programming Full Scale (F/S) Calibration
7. Meter Full Scale (F/S) Calibration
Performance Tests
The following paragraphs provide test procedures for verifying the unit's compliance with the specifications of Table 1-1 in
the Operating Manual. Please refer to CALIBRATION PROCEDURE or TROUBLESHOOTING if you observe
out-of-specification performance.
Measurement Techniques
Setup For All Tests. Measure the DC output voltage directly at the + S and - S terminals. Connect unit for local sensing,
and ensure that MODE switches are set as shown below. Select an adequate wire gauge for load leads using the procedures
given in the Operating Manual for connecting the load.
Electronic Load. The test and calibration procedures use an electronic load to test the unit quickly and accurately. If an
electronic load is not available, you may substitute:
3.5Ω 1000W load resistor (6010A)
0.4Ω 1000W load resistor (6011A)
0.4Ω 1000W load resistor (6012B)
250Ω 1000W load resistor (6015A)