TB 9-6625-2020-35
(8) Position dBm/dBV jumper (fig. 2) in dBV position.
(9) Press TI MAX dB pushbuttons and set calibrator output for settings listed in
table 12. TI will
indicate within limits
specified.
Test instrument
Calibrator output settings
Test instrument
MAX dB
indications
pushbuttons
Voltage
Min
Max
-10
1 mV
20 Hz
-59.5
-60.5
-10
1 mV
2 kHz
-59.5
-60.5
-10
1 mV
10 kHz
-58.5
-61.5
-10
100 mV
10 kHz
-19.5
-20.5
+10
1V
20 Hz
-0.5
+0.5
+30
10 V
10 kHz
+19.5
+20.5
+50
100 V
10 kHz
+39.5
+40.5
b. Adjustments
(1) Press TI 200 V pushbutton.
(2) Connect multimeter INPUT HI to TP1108 (fig. 2) and LO to TI LOW.
(3) Set calibrator for a 77.46 V, 100 Hz output. Adjust R1201 (fig. 2) until
(5) Adjust R1518 (fig. 2) until TI indicates +40.0 (R).
(6) Set calibrator for a 77.46 mV, 100 Hz output.
(7) Press TI 200 mV pushbutton. Adjust R1521 (fig. 2) until TI indicates -20.0 (R).
(8) Set calibrator for a 0.7746 mV, 100 Hz output. Adjust R1102 (fig. 2) until TI
indicates -60.0 (R).
(9) Press TI 2 V pushbutton.
(10) Set calibrator for a 3.0984 V, 100 Hz output. Adjust R1024 (fig. 2) until TI
indication just begins to flash (starts to blink).
(11) Set calibrator for a 23.238 mV, 100 Hz output. Adjust R1012 (fig. 2) until TI
indication just begins to flash (starts to blink).
a. Performance Check
NOTE
Do not perform power supply check if all other parameters
are within tolerance.
(1) Short TI VOLTS/Ω and LOW.