2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL
2820A-02-UM
REV 1.0
9
4.2.2
OPERATOR MICROPHONE
- This is a dual banana jack (color-coded red) that
functions as the microphone input from the operator's headset. It is only used if the
operator is in Full Duplex (4-Wire) mode.
4.2.3
PUSH-TO-TALK JACK -
This is a dual banana jack (color-coded yellow) that
allows for remote keying of the push-to-talk function of the communicator. The
difference between using the PUSH-TO-TALK JACK and PUSH-TO-TALK
SWITCH is that the switch allows the operator to communicate using the PANEL
MIC. If both are used at the same time, the PANEL MIC is active. This allows a
crew member to talk to the chamber occupants using the PANEL MIC even if the
operator is away from the communicator using the Remote Push-to-Talk Module in
2-Wire mode.
4.2.4
RECORDER OUTPUT
- This is a single RCA Phono jack (color-coded black) that
provides a transformer isolated of both the operator and chamber communications.
It is designed to drive the standard line-level inputs of audio or video recorders with
input impedances as low as 600 Ohms.
4.3
BACK PANEL CONNECTIONS
4.3.1
MS CONNECTOR
- There is a 14 pin MS Style connector located on the back
panel that provides the electrical connection to the chamber. The pin functions are
shown in the following table:
PIN NUMBER FUNCTION
K
Entertainment Speaker High (4003E Only)
L
Entertainment Speaker Low (4003E Only)
E
Outer Lock Microphone High
F
Outer Lock Microphone Low
G
Outer Lock Earphone High
H
Outer Lock Earphone Low
A
Inner Lock Microphone High
B
Inner Lock Microphone Low
C
Inner Lock Earphone High
D
Inner Lock Earphone Low
I
External Power +
J
External Power -
4.3.2
ENTERTAINMENT SPEAKER (2820A-03 only) -
This connection is only available
on the 2820A-03. It is routed to a separate entertainment speaker, such as the
Amron Model 3130, usually located in the Inner Lock.
4.3.3
OUTER MICROPHONE
- This connection functions as both an output (earphone)
and input (microphone) for the outer lock occupants as controlled by the PUSH-
TO-TALK SWITCH and PUSH-TO-TALK JACK. Using this connection, the
chamber can be wired in either 2-Wire or Full Duplex (4-Wire) mode regardless of
the mode used for the operator.
Summary of Contents for 2820A-02
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