TB 9-6625-1138-24
(5) Adjust calibrator output to 0.95 V at 1 kHz.
(6) Adjust FREQUENCY dial for maximum indication on TI R.M.S. VOLTS meter
(peaks at approx. 1 kHz).
(7) Set MODE SELECTOR switch to AFC.
(8) Adjust calibrator output until TI R.M.S. VOLTS meter indicates 1.0 on 0 to 1.0
scale. If calibrator output is not between 0.95 and 1.05 V, perform b (1) through (5) below.
(9) Connect oscilloscope to TI OUTPUT connector. If oscilloscope does not display
an undistorted waveform with an amplitude between 6.3 and 7.7 V p-p, perform b( 6) below.
(10) Disconnect oscilloscope from TI and repeat technique of (8) above for TI switch
settings listed in table 4. Calibrator will indicate within limits specified.
Table 4. Voltage Accuracy
Test instrument
Calibrator indications
R.M.S. VOLTS
RANGE
MAX INPUT
(rms)
(VOLTS)
VOLTAGE
meter indications
switch
switch
0 to 1.0
0 to 3
Min
Max
positions
positions
scale
scale
300 V
285 V
315 V
0.03
---
3
0.03
1 MV
1.0
---
0.95 mV
1.05 mV
0.03
3 MV
---
3
2.85 mV
3.15 mV
0.03
10 MV
1.0
---
9.5 mV
10.5 mV
0.1
30 MV
---
3
28.5 mV
31.5 mV
0.1
100 MV
1.0
---
95 mV
105 mV
0.3
300 MV
---
3
285 mV
315 mV
1
1 V
1.0
---
0.95 V
1.05 V
1
1 V
.8
---
0.75 V
0.85 V
1
1 V
.6
---
0.55 V
0.65 V
1
1 V
.4
---
0.35 V
0.45 V
1
1 V
.2
---
0.15 V
0.25 V
3
3 V
---
3
2.85 V
3.15 V
10
10 V
1.0
---
9.5 V
10.5 V
30
30 V
---
3
28.5 V
31.5 V
100
100 V
1.0
---
95 V
105 V
300
300 V
---
3
285 V
315 V
(13)
Connect equipment as shown in figure2.
7
