User Manual

EASy-PLUS
®
User Manual
– 11
TRILITHIC
Rev 1.02
if, you plan to use a video distribution amplifier at the CG VIDEO OUT to distribute the video back to
your tune-to modulator as well as to your comb generator. NOTE: This is done only if you plan to
use a “tune-to” video and audio message supplied to your comb generator prior to running the alert
on your “designated E.A.S. channel”. This will be explained further in the applications section of this
manual.
OUT: Connect CG VIDEO OUT to the input of your I.F. source modulator or to your comb generator.
If you are using an external video D/A, connect to input of D/A and then connect one output to your
comb generator and one output to your “designated E.A.S. channel” video input.
AUDIO EXPANSION 1:
Ch 1: AM or FM or NOAA radio antenna input.
Ch 2: AM or FM or NOAA radio antenna input.
AUDIO EXPANSION 2:
Ch 3: AM or FM or NOAA radio antenna input.
Ch 4: AM or FM or NOAA radio antenna input.
RS-485: For use with Trilithic external character generators, remote Virtual Controllers.
2.4 TERMINAL CONNECTOR:
TTL OUTPUTS: The individual programmable outputs which switch between TTL levels of 0 and 5 vdc. Each output
is programmable for switching with full system substitution timing, “designated E.A.S. channel”
substitution timing or “designated E.A.S. channel” audio-only switch timing. These outputs are
generally attached to the I.F. switching component (the LS-16P) or the baseband switching compo-
nent (the SW-8). This will be explained in more detail in the headend applications section.
CONTACT CLOSURES:
Used to connect such devices as a comb generator activation and Motorola OM-1000 Red/Black
terminals for digital settop force-tuning.
AUDIO OUTPUTS: E.A.S. alert audio is presented at all four audio outputs. Use these outputs to connect to E.A.S.
distribution equipment such as I.F. source modulator or comb generator.
AUDIO INPUTS: One extra set of baseband audio inputs used as audio input source #5 & #6 for monitoring stations.
AFSK SWITCH: Loop through baseband audio path from a modulator (usually your “designated E.A.S. channel) to
send AFSK tones downstream to the remote hub site Virtual Controllers.
AUDIO SWITCH: Input - Route the “designated E.A.S. channel” audio through for baseband control of “tune-to”
channel. Used usually in conjunction with an external video D/A. See applications section for further
information.
Output - Route the “designated E.A.S. channel” audio through for baseband control of “tune-to”
channel. Used usually in conjunction with an external video D/A. See applications section for further
information.
The INPUT/OUTPUT switch timing correlates to the E.A.S. channel substitution.