FMCS-1 Monitor
Page 12
FMCS-1
16.
POPUP MENUS
Many of the FMCS-1 Parameters and Information are accessed using popup menus. To access the popup menus press and hold down the
encoder for 2 seconds. To navigate the popup menus rotate the encoder to highlight a menu choice and click the encoder. To exit the pop menu
at any time, hold down the encoder for 2 seconds.
RF:
Settings which affect the RF portion of the signal.
Composite:
Settings which affect the Composite or baseband part of the signal.
SCA:
Subcarrier settings for SCA#1 and SCA#2.
Spectrum:
RF, Composite, and Audio spectrum settings.
Settings:
Unit, outputs, and network settings and information.
16-1.
RF
P
OPUP
M
ENU
Input Select:
Select which RF input is used Antenna (off the air) or High Level (tx site).
Tuning:
Allows frequency tuning of the unit from any screen.
Calibrator:
Activates internal RF calibrator. Calibrate waveforms: off, zero (un-modulated carrier), mono 1kHz(1 kHz sine wave 75 kHz deviation), left
1 kHz (1 kHz 90% left only), left 5 kHz(5 kHz 90% left only), left 10 kHz (10 kHz 90% left only), left 15 kHz (15 kHz 90 left only), SCA 67 92 zero
(un-modulated 67 kHz and 92 kHz subcarriers at 10% injection), and SCA 67 92 1 kHz (1 kHz modulated 67 kHz and 92 kHz subcarriers , 6 kHz
deviation, 10% injection).
Attenuator:
0.0 to −31.5dB step attenuator adjustable in 0.5dB steps. There are separate attenuators on both the Antenna and High Level inputs, the
input select determines which attenuator is active.
Filter:
RF filter which affects all analog readings. Filter choices: wideband, HD −25DB MP1, HD −25dB MP3, HD −50dB MP1, and HD −50dB MP3.
Wideband mode should be used for the most accurate readings, except in the presence of HD carriers which introduce interference into the demodulated
analog signal. If HD carries are present, the HD −25dB filter is recommended to suppress the HD carriers, choose the MP mode based on the HD service
mode being broadcast. The HD −50dB filters are recommended when making AM noise measurements in the presence of HD carriers or when running
elevated HD carrier power.
Mute:
Mutes composite and audio outputs. In addition to manually turning the mute on or off, auto muting is done based on the thresholds for the high
level and antenna inputs on the alarm/relay screen.
