Table 6. Ratio Accuracy, Model DP211

TB 9-1430-201-50

(2) Position TI dials to 999(10) (999(100)) for model DP311.

(3) Adjust voltage divider (Ae) to 999999X.

(4) Adjust output of voltage standard (A4) to 12 volts.

(5) Adjust lead compensator (A5) BALANCE 1 control for null on null detector (A1).

(6) Set TI and voltage divider controls to zero.

(7) Adjust lead compensator BALANCE 2 control for null on null detector.

(8) Repeat (2) through (7) above until no further adjustment is required.

(9) Set TI dial to 9999 (99990 for model DP311).

(10) Adjust voltage divider dials to obtain null on null detector. Voltage divider will

indicate between 9998000 and 999999X for model DP211 or between 9998500 and 9999500

for model DP311.

(11) Repeat technique of (9) and (10) above at TI dial settings listed in table 6 for

model DP211 or table 7 for model DP311. Voltage divider will indicate within limits

specified.

Table 6. Ratio Accuracy, Model DP211

Test instrument

Voltage divider indication

dial setting

Min

Max

8888

8887000

8889000

7777

7776000

7778000

6666

6665000

6667000

5555

5554000

5556000

4444

4443000

4445000

3333

3332000

3334000

2222

2221000

2223000

1111

1110000

1112000

Table 7. Ratio Accuracy, Model DP311

Test instrument

Voltage divider indication

dial setting

Min

Max

88889

8888400

8889400

77777

7777200

7778200

66666

6666100

6667100

55555

5555000

5556000

44444

4443900

4444900

33333

3332800

3333800

22222

2221700

2222700

11111

1110600

1111600