User's Manual Part 3

Quick Start Procedure - 144 -
Affinity® LBD-200C-N1 Transmitter
Product Manual
15. If required, raise or lower power (see calibration sections below for process). Note that
some sites may require power to be re-adjusted to compensate for antenna feed line
loss. This is normal, and is site specific. The Affinity® system, as calibrated by the
factory, will not allow the transmitter rated power output to be exceeded by more than
1dB. This 1dB margin is intended to compensate for transmitter drift with ageing, and
serves as the power limiter for transmitter safety and protection against overdrive
damage. Thales requires that the transmitter be operated at or below rated output, and
that the total effective radiated power at the antenna terminal(s) not exceed the FCC
limit of 2kW for this wireless service under part 27 of the commission regulations.
16. Recalibrate meter if required, see calibration process below.
17. Enable adaptive non-linear pre-corrector via front panel MMI. First, place the pre-
corrector in frozen mode, then enter adaptive mode. Observe shoulder performance via
spectrum analyzer and /or exciter front panel display; shoulder level greater than 34dBc
is acceptable, 36 dB is typical.
18. Enable adaptive linear pre-corrector via front panel MMI. First, place the pre-corrector in
frozen mode, then enter adaptive mode. Observe frequency response and group delay
through appropriate measurement technique.
19. As a safety precaution, place the transmitter into standby; also remove the UHF input to
the UCA. Now, connect the transmitter output to the antenna system. Note that the
return loss of the antenna should be greater than 15 dB at minimum.
20. Reconnect the UHF input and place transmitter into transmit mode.
21. See that shoulder performance and linear response has not changed with connection to
antenna system.
22. Ensure digital transmission quality by the appropriate demodulation and signal analysis
techniques.
NOTE: If this is the initial turn on, Thales recommends that the full site proof be conducted in
accordance with the provided field proof and handover documentation. All required data should
be recorded within that specific documentation. Typically, a Thales field engineer will conduct
this site turn-on process test during the site installation and proof. This eliminates the need for
any specialized test equipment by the product end-user. Once the system is setup, the
customer may maintain and view operating parameters via the onboard control and diagnostic
tools, which have been designed for ease-of-use, and to minimize the operator’s cost of
maintenance.