Harris Constellation Installation And Maintenance Manual page 66

4-24
The reason for performing these procedures is to ensure that the Transmitter
Assembly is operating on the correct frequency and power level to comply with
the license requirements. (Example: FCC Title 47, Part 101.107, 101.111,
101.113, and 101.217.) It also ensures that the residual BER floor and
acquisition time remain within specification.
a. Record the operating frequency of the Transmitter from the Keypad
b. This frequency should match the one written on the Tx filter and the
c. Determine from the table in
d. Connect a frequency counter to the REF MON port on the Transmitter
e. To adjust the frequency, use Keypad hidden menu command
f. Adjust the frequency to
Year of Operation
Initial adjustment
After one year of operation
Thereafter
Constellation™
hidden menu.
CONFIGURATION > F1 + F3 or Ctrl B > TX FREQ
station authorization.
be used (or is in use).
The Transmitter Assembly should be plugged into the
rack and powered for at least 30 minutes prior to
adjusting the frequency. The position of the TX On/OFF
switch does not affect the measurement. The power
supply should be ON.
The Frequency Counter should be plugged in and
powered for at least 30 minutes prior to adjusting the
frequency.
Assembly (Figure 4-16).
CONFIGURATION > F1 + F3 or Ctrl B > TX 100MHZ TUNE
±
100.000,000 MHz
Appendix C, which multiplier-filter should
(see table)
Tolerance
± 100 Hz
± 200 Hz
± 300 Hz
2002 June 20