SECTION III CALIBRATION PROCESS

CALIBRATION PROCESS

8. Preliminary Procedure

It is recommended that personnel familiarize themselves with the entire procedure

before performing calibration,

d. Insulate unused power cord plug on test

a. Position test instrument on its back.

b. Remove SB-3100/ARM-109 Power Distribution

instrument Power Distribution Panel.

CAUTION

Panel to gain access to power cables.

c. Connect TS-2354/ARM-109 power cord to 115/

Power source must be within ±5V rms of

Vrms, 400 Hz source. Refer to figure 2 for typical

115V, ±1 Hz of 400 Hz and waveshape must

be sinusoidal for correct calibration.

hookup.

Figure 2 Typical 400 Hz power application.

justment before continuing with the calib-

e. Check zero indicator of the Test instrument

ration procedure. When the performance

METER and adjust if necessary.

check is not within tolerance and the

WARNING

adjustment cannot bring it into tolerance,

HIGH VOLTAGE is used during the

the deficiency must be corrected before

performance of this calibration. DEATH

continuing with the procedure.

ON CONTACT may result if personnel fail

9. Negative Error. a. Performance Check.

to observe safety precautions.

(1) Position the test instrument controls as

NOTE

follows:

The following paragraphs are divided into

(a) POWER switch to ON.

subparagraph a, performance check, and

(b) OFF/SELF-TEST ON switch to ON.

subparagraph b, adjustments. When the

performance check is within tolerance, do

not perform the corresponding adjustment.

(2) Connect electronic voltmeter (A1) to connec-

When the performance check is not within

tor J1, pin 33 (fig. 3) and chassis ground using test

tolerance, perform the corresponding ad-

lead set (B4).