TB 9-6625-164-24
(5) Press the Calibrator V button. The Calibrator display will indicate an
Equivalent Output value with an assumed load of 600 Ω. The Calibrator must indicate
within the Calibrator limits listed in table 5.
(6) Repeat steps (3) through (5) above for the remaining values and indications
listed in table 5 below.
Table 5. Receiver Level.
Calibrator
TI
Calibrator Limits (V rms)
Applied (dBm)
RX LEVEL (dBm)
Minimum
Maximum
+10
+10
2.31247
2.59463
0.0
0.0
0.731266
0.820494
-10
-10.0
0.231247
0.259463
-20
-20.0
0.073127
0.082049
-30
-30.0
0.023125
0.025946
-40
-40.0
0.007313
0.008205
-50
-50.0
0.002313
0.002595
-60
-60.0
0.000731
0.000821
-70.01
-70
0.000231
0.000259
Perform -70.0 dBm check only if TI is operating on battery power.
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(7) Connect Frequency Counter to TI RX input.
(8) Set Calibrator for 250 Hz at 0.775 Vrms output. Using the Calibrator EDIT
controls, adjust the frequency until the TI RX FREQ (Hz) display indicates 250 Hz.
(9) The Frequency Counter will indicate between 248.97 Hz and 251.03 Hz.
(10) Repeat steps (8) and (9) above for the values and indications listed in table 6
below.
Table 6. Frequency.
TI
Counter Limits (Hz)
RX FREQ (Hz)
Minimum
Maximum
1000
998.9
1001.1
2000
1998.8
2001.2
3000
2998.7
3001.3
4000
3998.6
4001.4
(11) Set Calibrator OPR/STBY to STBY.
b. Adjustments. No adjustments can be made.
10. Receiver Filter
a. Performance Check
(1) Set Calibrator for 1 kHz at 0.775 V rms and set Calibrator OPR/STBY to OPR.
(2) Set TI RX FILTERS C-MSG/3 kHz FLAT/NONE to C-MSG.
(3) Using the Calibrator EDIT controls, set the Calibrator output level until the TI
RX LEVEL (dBm) display indicates 0.0 dBm. Press the Calibrator NEW REF button.
(4) Set the Calibrator frequency to each of the values listed in the Calibrator frequency
column of table 7 below.
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