TB 9-6625-2343-50
(23) Connect equipment as shown in figure 14.
(24) Set audio analyzer source output to 1 kHz at a level of 3 V.
CALIBRATOR
TO
TO
WIDEBAND
AUDIO ANALYZER
TO HIGH OUT
TO LOW OUT
CABLE AND TERMINATION
SUPPLIED WITH WIDEBAND
OPTION
TO TI MODULATION
OUTPUT/AUDIO INPUT
TEST INSTRUMENT
(25) Set calibrator output for a frequency of 2 kHz at a level of -57 dBm.
(26) Press TI keys as listed in (a) through (c) below:
(a) DATA 30.0.
(b) DATA SPCL.
(c) DISPLAY RATIO.
(27) Set audio analyzer source output level to 0 V.
(28) Increase calibrator output level to 22.53 dBm.
(29) Adjust calibrator output, if necessary, for a TI indication between 99 and 100%.
(30) Decrease calibrator output level exactly 40 dBm down.
(31) Press calibrator NEW REF key.
(32) Set audio analyzer source output level back to 3 V.
(33) Press TI keys as listed in (a) and (b) below:
(a) MEASUREMENT S (shift).
(b) AUDIO DISTN.
(34) If TI indication is not within limits specified in first row of table 14, perform b below.
indications are not within limits specified in table 14, perform b below.
Calibrator
Test instrument
Output
Indications
frequency
(%)
(kHz)
Min
Max
2
0.89
1.12
3
0.89
1.12
4
0.89
1.12
5
0.89
1.12
(36) Set audio analyzer source output frequency to 400 Hz.
(37) Press TI keys as listed in (a) and (b) below:
30
