TB 9-6625-1314-35
d. Connect TI to autotransformer (A5).
f. Set TI SAMPLE RATE control fully ccw (counterclockwise) (but not to LINE OFF),
and allow at least 30 minutes for warm-up.
16. Dc Volts and Stability (Level A and GSM-259)
a. Performance Check
(1) Set FUNCTION switch to DC and RANGE switch to 10 V.
(2) Short TI plug-in INPUT terminals, using lead (B3).
(3) Adjust TI rear panel ZERO adjustment to obtain an indication of 0.000 on TI. If
0.000 cannot be obtained, perform b(1) through (7) below.
NOTE
Optimum adjustment is indicated by alternate flashing of the
+ (plus) and - (minus) lights.
(4) Remove short from INPUT terminals.
(5) Depress and hold INT CHECK 8000 pushbutton and adjust INT CHECK 8000
adjustment to obtain an indication of -8.000. Release INT CHECK 8000 pushbutton.
(6) Connect dc voltage standard (A7) to TI plug-in INPUT, using two leads (B4).
(7) Adjust output of dc voltage standard to obtain an indication of 9.000 on TI. If dc
voltage standard does not indicate between 8.9945 and 9.0055 V, perform b(8) through (21)
below.
(8) Adjust autotransformer (A5) between 105 and 125 V while repeating (7) above.
(9) Adjust autotransformer to 115 V.
(10) Repeat technique of (7) above, using RANGE switch settings and indications
listed in table 10. If dc voltage standard does not indicate within limits specified, set
RANGE switch to 10 V and perform b(8) through (21) below.
20
