Pillow Speaker Setup - Zenith HealthView H20J55DT Installation Manual

Pillow Speaker Setup

Connect a pillow speaker to the TV
Pillow Speaker Control
Pillow Speaker Interface
This connector furnishes three control lines and an audio output. A patient-pendant remote control,
or entertainment audio and nurse call system may be connected here. All lines are isolated from the
AC power line and earth ground. (Opto-isolators isolate the control lines, and a transformer isolates
the audio. There are no relays or inductive components in the control lines.)
4
5
6 3
1
2
1
T V O N / O F F
2
O P E N
3 C H A N U P / D A T A I N
4
C O M M O N
5
A U D I O O U T
6 C H A N D O W N
Controlling the TV with Mechanical Switches
Pin 4 (common) is momentarily connected to pin
1, 3, or 6 via push-action switches to control
On/Off and Channel Up/Down. These pins are at
+13 volts DC (when measured from pin 4) with
the switches open. Current draw is 8 mA when a
switch is closed. (This operation is identical to
previous Zenith models using the 5-Wire Interface
except that only +7 volts DC was supplied and
current draw was only 2.5 mA.)
206-4065
Pin No. Purpose
1 External TV On/Off switch.
ed.)
2 (Not us
3 External Channel Up switch or Data in.
4 Common connection for control, data, and audio
output. Impedance to earth ground is a 10-meg
resistor in parallel with a 1100 pf capacitor.
5 Isolated audio output. Nominal 14-ohm source
impedance with short circuit protection. Intended for
a pillow speaker with a low-impedance pad-type volume
control.
6 External Channel Down switch.
S P K R .
VOLUME CONTROL
TV
ON/OFF
4
5
3
6
1
2
(MALE
P L U G )
CHAN
CHAN
UP
DOWN
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