4
789-44D
CAUTION NOTE
When using long lengths (> 50 feet) of inter-room shielded cable in your installation, it may be necessary
to connect a 470-Ohm 1/8-Watt resistor between IR IN and GND at the 4-terminal connector of the 789-44D.
Refer to Fig. 4.
The resistor discharges the cable capacitance more quickly, allowing IR codes of high bit rates to pass
without data loss.
+ 1 2 V
G N D
S TAT U S
I R I N
470-Ohm
resistor
Shielded Cable
to remote room
789-44D
Input
Terminals
Ground Shield as shown
REFINISHING AND MOUNTING
The printed circuit boards and jacks can be easily removed so that the metal plate can be refinished in other
colors, if desired. Simply remove the four screws that secure the PCB's to the metal plate.
The 789-44D can be mounted into any single gang space in standard "J" boxes, using the two 6-32 pan-
head screws supplied.
Fig. 4
470-Ohm Capacitance Discharge Resistor
