2820A-02 & 2820A-03 CHAMBER COMMUNICATOR USER MANUAL
2820A-02-UM
REV 1.0
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To connect the chamber in Full Duplex (4-Wire) mode, connect the chamber
headset microphone pin to this connection as shown in section 4.6.
To connect the chamber in 2-Wire mode, connect the talk-back speaker, such as
the Amron Model 3114 Chamber Speaker Box to this connection. You can have a
mixed Full Duplex and 2-Wire by having both a talk-back speaker and headset jack
by using the Amron Model 3115 Chamber Communicator Box as shown in section
4.6.
4.3.4
OUTER EARPHONE
- This connection functions as the output for the chamber
headset earphone. It is only used when the chamber is in Full Duplex (4-Wire)
mode.
4.3.5
INNER MICROPHONE
- This connection has the same function as the OUTER
MICROPHONE but for the inner lock.
4.3.6
INNER EARPHONE
- This connection has the same function as the OUTER
EARPHONE but for the inner lock.
4.3.7
EXTERNAL POWER
- The communicator can be powered using an external
battery or power supply via this connection. The input voltage must be between 9
and 16 VDC and must be able to supply a peak current of 3 Amps for proper
operation. The following warning should be followed when using the EXTERNAL
POWER connection. A minimum wire size of 18 AWG and maximum wire run of 3
feet (1 meter) is recommended.
4.3.8
ENTERTAINMENT AUDIO INPUT (2820A-03 ONLY)
This is a set of two RCA Phone jacks (color-coded red and white) that provides a
means to connect an external audio signal for chamber occupant’s entertainment.
Although this input will accept a stereo audio source, it will be converted into a
monaural signal before going to the chamber. The earphone output of most MP3
players can be connected to this input using an adaptor cable like the Amron Audio
Adaptor Cable (Amron Part Number 180-1000-00).
4.3.9
AC POWER INLET
This is a standard IEC type C14 AC Power Inlet. The communicator is shipped with
a NEMA 5-15 power cable but the communicator will accept AC input voltages from
90-264 VAC with a frequency 47-440 Hz.
WARNING!
The EXTERNAL POWER input can be used to recharge the 2820A-02 &
2820A-03 rechargeable sealed lead acid battery. If you use an external
power supply, the maximum voltage needs to be limited to 9-16 Volts.
Summary of Contents for 2820A-02
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