TB 9-6625-2170-35
(3) Set calibrator for a 774.6 mV, 1 kHz output. If TI does not indicate between -
00.3 and +00.3 dBm, perform b(1) through (11) below.
(4) Repeat technique of (3) above using settings listed in table 5. If TI does not
indicate within limits specified, perform b(1) through (11) below.
Test instrument indications
Calibrator settings
(dBm)
Amplitude
(kHz)
(mV)
Min
Max
1
244.95
-09.7
-10.3
1
77.46
-19.7
-20.3
1
24.495
-29.7
-30.3
1
7.746
-39.7
-40.3
(5) Set calibrator for a 774.6 mV, 1 kHz output.
(6) Press FUNCTION dB RATIO pushbutton and press and release PUSH TO
SET 0 dB REF pushbutton. If TI does not indicate between -00.3 and +00.3 dB, perform
b(12) through (15) below.
(7) Set calibrator frequency to 10 Hz. If TI does not indicate between -00.5 and
+00.5 dB, perform b(12) through (15) below.
(8) Repeat technique of (7) above using settings listed in table 6. If TI does not
indicate within limits specified, perform b(12) through (15) below.
Calibrator
Test instrument indications
frequency
(dB)
settings
Min
Max
20
Hz
-00.3
+00.3
20
kHz
-00.3
+00.3
100
kHz
-00.5
+00.5
(8) Set calibrator for a 100 V, 1 kHz output.
(9) Press and release PUSH TO SET 0 dB REF pushbutton.
(10) Set calibrator amplitude to 1 mV. TI will indicate between -99.3 and -100.7 dB.
b. Adjustments
(1) Set INPUT RANGE switch to 2V.
(2) Set calibrator for a 774.6 mV, 1 kHz output.
(3) Adjust 0 dB CAL (fig. 3) until TI indicates 00.0 dBm (R).
(4) Set calibrator amplitude to 77.46 mV.
(5) Adjust R2161 (fig. 1) until TI indicates -20.0 dBm (R).
(6) Set calibrator amplitude to 7.746 mV.
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