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PAGE 16
1
2
3
4
5
6
3
1
5
2
4
6
TV ON/OFF
OPEN
CHAN UP/DATA IN
COMMON
AUDIO OUT
CHAN DOWN
Pillow Speaker used in your system?
- Connect pillow speaker and slide con-
trol switch to ‘Pillow Speaker’ to con-
trol TV and hear audio on pillow
speaker.
- For TV speakers sound with pillow
speaker control, set switch to ‘Normal
Speaker’ on connections panel.
Pillow Speaker Setup
3
TV
ON/OFF
CHAN
DOWN
CHAN
UP
(MALE
PLUG)
VOLUME CONTROL
SPKR.
5
1
4
6
2
TV
PILLOW
SPEAKER
PILLOW
SPEAKER
NORMAL
SPEAKER
SPEAKER SWITCH
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.)
Controlling the TV with Mechanical
Switches
Pin 4 (common) is momentarily con-
nected to pin 1, 3, or 6 via push-action
switches to control power 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
models using the 5-Wire Interface
except that only +7 volts DC was sup-
plied and current draw was only 2.5
mA.)
Pin No. Purpose
1 External TV On/Off switch.
2 (Not used.)
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.
Pillow Speaker Connections
Set up Pillow Speaker after commercial mode setup and cloning procedures are complete