TB 9-4931-290-50
d. Set multimeter to measure dc volts.
e. Position TI controls as listed (1) through (3) below:
(1) RANGE switch to 10 V.
(2) MODE switch to DC POS.
(3) OUTPUT VOLTAGE controls to TEN.000.
f. Energize TI and allow 2 hours for to warm-up and stabilize.
8. Output Stability
a. Performance Check
(1) Record multimeter indication.
(2) Vary autotransformer from 105 to 125 V and return to 115 V. Multimeter
indication will remain within .009 V of indication recorded in (1) above throughout
autotransformer variations.
b. Adjustments. No adjustments can be made.
9. Ac Voltage
a. Performance Check
(1) Position controls as listed in (a) through (c) below:
(a) MODE switch to 1 kc RMS.
(b) RANGE switch to 100 V.
(c) OUTPUT VOLTAGE controls to TEN0.00.
(2) Set multimeter to measure ac volts.
(3) If multimeter does not indicate between 99.8450 and 100.1550 volts, perform b (1) below.
(4) Repeat technique of (1) through (3) above for each TI output listed in table 3.
Table 3. Ac Voltage
Test instrument switch setting
Multimeter indications (V)
Test instrument
OUTPUT
Mode
RANGE switch
adjustments
VOLTAGE
Min
Max
switch
(V)
controls
1 kc RMS
100
99.90
99.745
100.055
---
1 kc RMS
100
88.80
88.645
88.955
---
1 kc RMS
100
77.70
77.545
77.855
---
1 kc RMS
100
66.60
66.445
66.755
---
1 kc RMS
100
55.50
55.345
55.655
---
1 kc RMS
100
44.40
44.245
44.555
---
1 kc RMS
100
33.30
33.145
33.455
---
1 kc RMS
100
22.20
22.045
22.355
---
