TB 9-6625-1978-35
8. Input Sensitivity
a. Performance Check
(1) Connect signal generator RF Output to TI BAND A 300-950 MHz input.
(2) Set signal generator frequency to 300 MHz and level output to 50 dBm.
(3) Slowly increase signal generator level output until TI displays a stable count of
applied frequency. Signal generator level output will not exceed -10 dBm.
950 MHz.
(5) Disconnect signal generator RF Output from TI.
(6) Set TI BAND select switch to B 18 GHz.
(7) Connect signal generator RF Output to TI BAND B 925 MHz 18 GHz input.
(8) Set signal generator frequency to 925 MHz and level output to 50 dBm.
(9) Slowly increase signal generator level output until TI displays a stable count of
applied frequency. Signal generator level output will not exceed -10 dBm.
GHz.
(11) Set signal generator frequency to 15 GHz and level output to 50 dBm.
(12) Slowly increase signal generator level output until TI displays a stable count of
applied frequency. Signal generator level output will not exceed -5 dBm.
b. Adjustments. No adjustments can be made.
9. Power Supply
a. Performance Check
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
(1) Connect multimeter between +12V test point (fig. 1) and chassis ground. If
multimeter does not indicate between 11.99 and 12.01 V dc, adjust A107R7 (fig. 1).
(2) Connect multimeter between +5V test point (fig. 1) and chassis ground.
If
multimeter does not indicate between 4.99 and 5.01 V dc, adjust A107R15 (fig. 1).
(3) Connect multimeter between -12V test point (fig. 1) and chassis ground.
If
multimeter does not indicate between -11.99 and -12.01 V dc, adjust A107R21 (fig. 1).
(4) Connect multimeter between -5V test point (fig. 1) and chassis ground.
If
multimeter does not indicate between -5.19 and -5.21 V dc, adjust A107R31 (fig. 1).
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