TB 9-6625-2271-40
9. Ac Measurement Accuracy
a. Performance Check
(1) Connect calibrator OUTPUT HI and LO to TI INPUT HIGH and LOW using
balanced cable.
(2) Press LCL INIT key. Press INPUT FLOAT key and verify INPUT FLOAT
indicator is illuminated.
(3) Set calibrator for a 3 mV, 1 kHz output. If TI indication is not between 2.970
and 3.030 mV, perform b below.
(4) Repeat technique of (3) above using calibrator output settings and TI indications
listed in table 4.
Table 4. Ac Measurement Accuracy
Calibrator
Test instrument indications
output settings
(V)
Amplitude
(V)
Min
Max
0.03
1 kHz
29.70
m
30.30
m
0.3
1 kHz
297.0
m
303.0
m
3
1 kHz
2.970
3.030
30
1 kHz
29.70
30.30
300
1 kHz
297.0
303.0
0.003
50 Hz
2.970 m
3.030
m
0.03
50 Hz
29.70
m
30.30
m
0.3
50 Hz
297.0
m
303.0
m
3
50 Hz
2.970
3.030
30
50 Hz
29.70
30.30
300
50 Hz
297.0
303.0
0.003
49 Hz
2.940 m
3.060
m
0.03
49 Hz
29.40
m
30.60
m
0.3
49 Hz
294.0
m
306.0
m
3
49 Hz
2.940
3.060
30
49 Hz
29.40
30.60
200
49 Hz
196.0
204.0
0.003
20 Hz
2.940 m
3.060
m
0.03
20 Hz
29.40
m
30.60
m
0.3
20 Hz
294.0
m
306.0
m
3
20 Hz
2.940
3.060
30
20 Hz
29.40
30.60
200
20 Hz
196.0
204.0
3
100 kHz
2.940
3.060
30
100 kHz
29.40
30.60
200
100 kHz
196.0
204.0
0.003
51 kHz
2.940 m
3.060 m
0.03
51 kHz
29.40
m
30.60
m
0.3
51 kHz
294.0
m
306.0
m