TB 9-6625-2059-24
(23) Set FREQUENCY MHz switches to 900 000 0 and HI LVL - VX100-NORM
switch to HI LVL.
(24) Adjust BFO-RF LEVEL control until TI 0-dBm light just illuminates.
(25) Repeat (4) above.
(26) Measuring receiver will indicate between 6.0 and +6.0 dB.
(27) Set HI LVL - VX100-NORM switch to VX100 and adjust BFO-RF LEVEL
control to the first setting in table 10. Measuring receiver will indicate within limits
specified in first row of table 10.
(28) Repeat technique of (27) above for BFO-RF LEVEL control settings and
FREQUENCY MHz switch settings at 900 000 0 listed in table 10. Measuring receiver
will indicate within limits specified.
Table 10. Output Level 900 MHz.
Test instrument
Measuring receiver indications
(dB)
BFO-RF LEVEL
FREQUENCY MHz
control settings
switch settings
Min
Max
80
900 000 0
-34
-46
90
900 000 0
-44
-56
100
900 000 0
-54
-66
110
900 000 0
-64
-76
120
900 000 0
-74
-86
(29) Set HI LVL - VX100-NORM switch to NORM and BFO-RF LEVEL control to
-80 dBm. Measuring receiver will indicate between -74 and -86 dB.
b. Adjustments. Adjust BFO-RF LEVEL control to -100 dBm. Adjust A1A1R43 (fig. 3)
until measuring receiver indicates -60 dB.
Figure 3. Test Instrument - Left View.
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