Agilent Technologies 664xA, 665xA, 667xA, 668xA, AGILENT Model 6653A: 3145A-00551, Model 6641A: 3217A-00111, Model 6645A: 3215A-00111, Model 6651A: 3130A-00171, Model 6652A: 3201A-00381, Model 6654A: 3148A-00391, Model 6655A: 3152A-00176, Model 6671A: 3129A-00218, Model 6672A: 3138A-00101, Model 6673A: 3138A-00101, Model 6674A: 3133A-00161, Model 6675A: 3138A-00101, Model 6680A: 3302A-00101, Model 6681A: 3250A-00101, Model 6682A: 3339A-00101, Model 6683A: 3339A-00161, Model 6684A: 3339A-00101

128 Current Loop Compensation (Series 668xA Only)

Figure E-1. CC Loop Compensation Curves For Model 6684A

Setting The Loop Compensation Switch

SHOCK/ENERGY HAZARD. This procedure involves removing the outside cover and should only

be done by qualified electronics service personnel.

1. Turn off the power switch and disconnect the power cord from the power source. If this is not possible, remove the three

line fuses from the rear panel (see Figure 2-4).

2. Remove the four screws that secure the two carrying straps and outside cover.

3. Spread the bottom rear of the cover and pull it back to disengage it from the front panel.

4. Remove the cover by sliding it back towards the rear of the supply.

5. Locate the compensation switch (see Figure E-2).

6. Move the switches to the desired position.

7. Replace the outside cover.

Figure E-2. CC Loop Compensation Switch