User manual

4
Features
Selectable Mode Operation - The PS-20 is selectable between RTS 2-channel, RTS 4-channel and Clear-
Com mode.
Audio Linking - Audio Linking allows you to connect up to two (2) PS-20s with a standard
stereo cable. There is an Audio Link for CH1 and CH2 and an Audio Link
for CH3 and CH4 connection for two way communications. To learn how to
configure Audio Linking, Figure 2, “Audio Linking Two-way
communication configuration.,” on page 8
Monitoring - The 3-pin XLR Monitoring Output connector allows the user to monitor a
channel or channels. A user station or beltpack is required to use a headset
with this feature.
NOTE: In Clear-Com mode, only channel one (1) is heard.
Status Indicators - There is a green status indicator for each channel. Each of these indicators
remains lit during normal operation, but turns RED during a channel current
overload condition. Output current is automatically reduced during an
overload, and normal operation is restored when the overload is removed.
Program Input - There is a Program Input connector on the rear panel. This can be used to
connect a device that both channel 1 and channel 2 can listen to at the same
time (for example, a radio). A Channel Select switch on the front panel
assigns the program to either or both channels. A Level control adjusts the
program level to the intercom channel.
Intercom Channels
Connections - Intercom channels are connected to the rear panel of the PS-20 with 3-pin
XLR connectors.
Selectable Termination
Impedance - The IMPEDANCE SELECT switch on the rear panel allows each channel to
be set for 200 Ω or 400 Ω operation. Select 200 Ω for each channel operated
independently. Select 400 Ω for each channel connected to another channel.