TB 9-6625-2151-35
Test instrument FILTER selections and left display indications
Calibrator
15 kHz
C-
FLAT
MESSAGE
PROGRAM
50 KBIT
3 kHz FLAT
Notch filter1
settings (Hz)
(dBm)
(dBm)
(dBm)
(dBm)
(dBm)
(dBm)
100
---
---
---
62 to 65
---
---
300
73 to 74
---
---
---
---
---
400
---
---
---
---
---
90
500
---
---
---
83 to 84
---
---
≥88
862
---
---
---
---
---
900
89 to 90
---
---
---
---
---
1000
90
90
90
90
90
<40
1020
---
---
---
---
---
<40
≥88
1182
---
---
---
---
---
1700
---
---
---
---
---
90
2000
---
---
---
94 to 95
---
---
2500
88 to 89
---
---
---
---
---
3000
87 to 88
86 to 88
---
---
---
---
4500
66 to 71
---
---
---
---
---
5000
---
---
---
95 to 98
---
---
6000
---
75 to 80
---
---
---
---
10,000
---
---
---
78 to 85
---
---
15,000
---
---
86 to 88
---
89 to 90
---
25,000
---
---
---
---
87 to 88
---
30,000
---
---
75 to 80
---
---
---
35,000
---
---
---
---
84 to 86
---
50,000
---
---
---
---
62 to 67
---
Press MEASUREMENT MEAS key to select NOISE WITH TONE then press FILTER FILTER key to select 15 kHz
1
FLAT.
b. Adjustments
(1) Press calibrator RESET key and disconnect from TI.
(2) Connect left TRMT/RCV 310 to right RCV/TRMT 310.
(3) Press DISPLAY key to select TRMT and MEASUREMENT MEAS key to
select LEVEL FREQUENCY.
(4) Press ←, STEP UP, STEP DOWN, and → keys until TI right display indicates
995 Hz. Adjust OUTPUT LEVEL control until left display indicates 0.0 dBm.
(5) Press DISPLAY key to select RCV.
(6) Move shorting bars on JU5 (fig. 1) to right (shorting pins 5 to 12, 6 to 11, 7 to 10,
and 8 to 9).
(7) Connect oscilloscope CH 1 to pin 1 of JU5 (fig. 1).
(8) Adjust R102 (fig. 1) for minimum ac signal on oscilloscope (R).
(9) Press ←, STEP UP, STEP DOWN, and → keys until TI right display indicates
1010 Hz.
10
