Auxiliary I.f. Switch Installation (Sw-4) - Trilithic EASy-PLUS User Manual

TTL Control Line from Encoder/
Decoder pins G and 1. Use
headend audio wire.
Input from I.F.
source modulator
LS-16P
The composite I.F. distribution system is now installed.
7.4

Auxiliary I.F. Switch Installation (SW-4)

The SW-4 switch is used to locally activate a contact closure on the rear of a modulator or processor enabling the
internal I.F. switch built into the chassis. The E.A.S. I.F. signal and DC current are fed to the input port of the SW-4
switch from the LS-16P. The signal passes through the switch to the Aux. I.F. Input port on the rear of the modulator or
processor. The DC current is blocked at the input to the SW-4 and converted to a normally open (N/O and N/C) contact
closure. The N/O terminal of the SW-4 should be attached to the rear of the modulator on the appropriate screw terminal
to cause the internal I.F. switch to activate when the LS-16P distribution system sends its signal to the SW-4. The ground
terminal on the SW-4 should also be attached to an appropriate grounding point on the modulator or processor.
EASy-PLUS User Manual
®
26 –
TRILITHIC
?
?
OFF
ON
16 14 12 10
15 13 11 9
I.F. IN
Primary LS-16P
LS-16P
LS-16P
LS-16P
8 6 4 2
7 5 3 1
I.F. output to any other LS-16P Lossless Splitter
or any other Aux. I.F. Input or any other SW-1 or
SW-4 switch located at a modulator or processor.
TEST
Front View
MAST IN
GND
E.A.S.
MAST IN
MAST OUT
Rear View
GND
PS
LS-16P
TRILITHIC
Rev 1.02