Table 2-2. Calibration Procedure (continued)

TEST

TESTED

TEST POINTS

 

TEST SEQUENCE AND ADJUSTMENTS

EXPECTED

 

VARIABLE

 

 

 

 

 

RESULTS

Power

V(OUT)

 

a.

 

Perform I-MON F/S Adjust before

30.2A 7.55V for

Limit

I(OUT)

 

 

 

proceeding.

CC operation

Adjust.

 

 

 

b.

 

Connect the unit to the ac power line via the

(6023A)

 

 

 

 

 

 

external variable auto-transformer which is set

10.2A, 23V for

 

 

 

 

 

 

to nominal line voltage.

 

 

 

 

c.

Connect a 0.25Ω, 250W (6023A), 2.3Ω,

CC operation

 

 

 

 

 

 

250W (6028A) resistor across the unit's output

(6028A)

 

 

 

 

 

 

and turn on ac power.

 

 

 

 

 

d.

Set voltage control to 9V (6023A) 9V≥ 3V

 

 

 

 

 

 

 

(6028A) and current control to 30.2A

 

 

 

 

 

 

 

(6023A), 10.2A (6028A)

 

 

 

 

 

e.

 

Set auto-transformer to minimum line

 

 

 

 

 

 

 

voltage.

 

 

 

 

 

f.

 

Turn A2R25 fully counterclockwise.

 

 

 

 

 

g.

Slowly adjust A2R25 clockwise until CC

 

 

 

 

 

 

 

LED just lights.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2-1. Common Mode Setup

13

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Agilent Technologies AGILENT MODELS 6023A and 6028A service manual Vout, Iout