TB 9-6625-1314-35
NOTE
When indications specified in paragraphs 8 through 11 are not
within tolerance, perform the power supply check prior to
making adjustments. After adjustments are made, repeat
paragraphs 8 through 11. Do not
perform power supply check if
all other parameters are within tolerance.
NOTE
Unless otherwise specified, all controls and control settings
refer to the TI.
7. Equipment Setup
a. Remove TI protective cover as required for adjustments.
b. Install plug-in(model C15-3444A or 3444A) into TI main frame (model 3439A or
C28-3439A).
c. If necessary, set 115-220 power switch, located on rear panel, to 115.
e.
Connect autotransformer to
115 V ac
(volt alternating current) source and
adjust for
115 V.
f. Set TI LINE switch to on (up) position and allow at least 30 minutes for warm-up.
8. Dc Volts and Stability
a. Performance Check
(1) Set FUNCTION switch to VOLTS and RANGE switch to 10 V.
to red) using lead (B3).
(2) Short INPUT terminals (
(3) adjust rear panel ZERO adjust to obtain an indication of 0.000 on TI. If 0.000
cannot be obtained, perform b(1) through (6) below.
NOTE
Optimum adjustment is obtained when the + (plus) and
- (minus) indicators light alternately.
(4) Press INT CHECK 8000 pushbutton and adjust the INT CHECK 8000
adjustment to obtain an indication of -8.000 on TI. Release INT CHECK 8000 pushbutton.
(5) Set RANGE switch to 100 mV and adjust front panel ZERO, adjust to obtain an
indication of 00.00 on TI.
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