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Transmitter Level and Flatness
Figure 1. Transmitter/receiver hold coil current test.

Calibration Procedure For Transmission Impairment Measuring Set Model 4945A Page Navigation
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TB 9-6625-2221-24
Table 5B. Transmitter Level and Flatness
Level (dB)
Frequency
1
+5
0
Min
Max
Min
Max
Hz1
20
+4.5
+5.5
-0.5
+0.5
200
Hz
+4.8
+5.2
-0.2
+0.2
1004
Hz
+4.8
+5.2
-0.1
+0.1
14
kHz
+4.8
+5.2
-0.2
+0.2
84
kHz
+4.5
+5.5
-0.5
+0.5
110
kHz
+4.0
+6.0
-1.0
+1.0
1135:
is not specified above + 5 dB nor below 200 Hz.
Table 5C. Transmitter Level and Flatness
Level (dB)
Frequency
-20
-40
Min
Max
Min
Max
Hz1
20
-19.5
-20.5
-39.5
-40.5
200
Hz
-19.8
-20.2
-39.8
-40.2
1004
Hz
-19.9
-20.1
-39.8
-40.2
14
kHz
-19.8
-20.2
-39.8
-40.2
84
kHz
-19.5
-20.5
-39.5
-40.5
110
kHz
-19.0
-21.0
-39.0
-41.0
1135:
is not specified above + 5 dB nor below 200 Hz.
Table 5D. Transmitter Level and Flatness
Level (dB)
Frequency
-60
Min
Max
Hz1
20
-59.5
-60.5
200
Hz
-59.8
-60.2
1004
Hz
-59.8
-60.2
14
kHz
-59.8
-60.2
84
kHz
-59.8
-60.2
110
kHz
-59.0
-61.0
1135:
is not specified above + 5 dB nor below 200 Hz.
b. Adjustments. No adjustments can be made.
11. Transmitter Hold Coil Current
a. Performance Check
(1) Connect equipment to TRMT terminals as shown in figure 1.
(2) Press hardkey SET UP.
(3) Position keys as listed in (a) through (f) below:
(a) Press softkey DIAL/HOLD SET UP.
(b) Press softkey TRMT HOLD ON.
(c) Press softkey RCVR HOLD ON.
(d) Press hardkey SET UP.
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