Table 2-3. Guide to Recalibration After Repair

Printed Circuit

Block Name

Circuit Within

Ref.

 

Perform These

 

Board

 

 

Block

Designator

 

Procedures*

A1 Main Board

 

 

 

R3

 

4

A1

Main Board

 

 

 

T1

 

4 then 5

A4

Power Mesh

 

 

 

T3

 

4 then 5 Board

A4 Power Mesh

 

 

 

CR7

 

4 then 5 Board

A2

Control Board

Constant Voltage

All Except Current

All

 

1 then 2

 

 

(CV) Circuit

 

Source

 

 

 

A2

Control Board

Constant Voltage

Current Source

All

 

6

 

 

(CV) Circuit

 

 

 

 

 

A2

Control Board

Constant Current

 

 

All

 

3 then 4

 

 

(CC) Circuit

 

 

 

 

 

A2

Control Board

Power Limit

 

 

All

 

4 then 5

 

 

Comparator

 

 

 

 

 

A2

Control Board

Bias Power Supplies

± 15V Supplies

All

 

All

A2

Control Board

 

 

 

U9, R79, R80, R24

 

7

 

 

* Code To Calibration Procedure To Be Performed

 

1.

V-MON Zero Calibration

4. I-MON Full Scale (F/S) Calibration

 

2.

Common-Mode Calibration

5.

Power Limit Calibration

 

3.

I-MON Full Scale (F/S) Zero 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 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 a 2Ω 250W load resistor for the electronic load in these tests:

CV Source Effect (Line Regulation)

CC Load Effect (Load Regulation)

You may substitute a 0.25Ω 250W load resistor in these tests:

CV Load Effect (Load Regulation)

CV PARD (Ripple and Noise)

CCSource Effect (Line Regulation) CC PARD (Ripple and Noise)

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Agilent Technologies AGILENT MODELS 6023A and 6028A service manual Performance Tests, Measurement Techniques, CR7