TB 9-6625-1957-24
Figure 2. Tektronix, Type DM 501 A - left side view.
WARNING
In the following table, use an insulated adjustment tool when
adjusting capacitors C1114, C1128 and C1129. The input
potential is connected to the metal top of these capacitors.
Table 8. Ac Voltage
Calibrator
Test instrument
output
Indications
Adjustments
Range
setting
Min
Max
Amplitude
100
mV
10 kHz
2V
0.0984 V
0.1016 V
LO VAC R1525
1.9 V
10 kHz
2V
1.8876 V
1.9124 V
2 VAC R1537
190 mV
1.0 kHz
200 mV
188.76 mV
191.24 mV
- - -
19 V
20 Hz
20 V
18.800 V
19.200 V
- - -
19 V
1 kHz
20 V
18.876 V
19.124 V
- - -
20 VAC1 C1114
19 V
10 kHz
20 V
18.876 V
19.124 V
19 V
20 kHz
20 V
18.800 V
19.200 V
- - -
190 V
10 kHz
200 V
188.76 V
191.24 V
200 VAC C1128
500 V
10 kHz
500 VAC
496.0
V
504.0
V
500 VAC C1129
Some units are labeled (C1144) on adjustment cover plate.
1
(4) Reduce calibrator output to minimum.
b. Adjustments. No other adjustments can be made.
12