TB 11-6625-2488-50/1
Table 3. Voltage Gain and Frequency Response
Dc voltage
standard indications
UUT INPUT
Test oscillator
(volts)
SELECTOR
frequencies (Hz)
positions
Min
Max
50
DCX10
0.91
1.11
50
DCX1
0.91
1.11
1000
DCX10
0.91
1.11
1000
DCX1
0.91
1.11
10,000
DCX10
0.91
1.11
10,000
DCX1
0.91
1.11
100,000
DCX10
0.91
1.11
100,000
DCX1
0.91
1.11
500,000
DCX10
0.91
1.11
500,000
DCX1
0.91
1.11
800,000
DCX10
0.71
1.41
800,000
DCX1
0.71
1.41
(6) Adjust autotransformer (A9, table 1) to 105
(4) Adjust oscillator amplitude until thermal
volts ac.
transfer indicates 100 volts rms.
(7) Balance thermal transfer.
Dc voltage
(5) Disconnect cable (B3, table 2) to paralleled
standard will indicate between 9.886 and 10.121.
decade resistors (A7, table 1). Balance thermal transfer.
(8) Adjust autotransformer to 125 volts ac.
Dc voltage standard will indicate between 97.0 and
(9) Repeat (7) above.
103.0 volts.
(10) Adjust autotransformer to 115 volts ac.
(6) Repeat (2) through (5) above at an oscillator
(11) Set UUT INPUT SELECTOR switch to
frequency of 50 kHz.
DCX1.
(7) Repeat (2) through (5) above at an oscillator
(12) Set dc voltage standard to 1.0 volt and
frequency of 100 kHz.
b. Adjustments. No adjustments can be made.
balance thermal transfer.
(13) Adjust oscillator amplitude until thermal
11. Voltage Gain and Frequency Response.
a.
transfer indicates 1.0 volt.
Performance Check.
(14) Repeat (4) above.
(15) Connect equipment as shown in connection
(1) Adjust oscillator (A3, table 1) output
A of figure 5. Replace oscillator with test oscillator (A4,
frequency to 5 Hz.
(2) Set dc voltage standard (A10, table 1) to
(16) Set UUT INPUT SELECTOR switch to
10.0 volts and balance thermal transfer (A8, table 1).
DCX10.
(3) Adjust oscillator amplitude until thermal
(17) Repeat (1) through (5) and (11) through (16)
transfer indicates 10.0 volts.
above for each test oscillator frequency listed in table 3.
(4) Connect equipment as shown in connection
DC voltage standard will indicate within limits specified in
B of figure 5. Balance thermal transfer. Dc voltage
standard will indicate between 0.91 and 1.11 volts.
(5) Connect equipment as shown in connection
A of figure 5.
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