RTS PS-20 Power Supply User Manual


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PS-20
Power Supply
The RTS PS-20 is the new agship of a complete independent TW power supply. The PS-20 features two- and four-channel
operation, RTS monitoring, two-channel program input, audio linking, and three-mode operation: RTS 2-channel, RTS 4-chan-
nel and Clear-Com mode. It also has double the power output of the PS-31 per channel, which will increase the number of user
stations and beltpacks which can be connected substantially.
The PS-20 features two channels of communication where both channels are “wet”, meaning there is power on each channel
(RTS two-channel mode). In RTS four-channel mode, the audio signals and DC exist on the same wire. The PS-20 can also be
switched into Clear-Com mode. The PS-20 has a 3-pin XLR (male) connector on the front of the system, where a RTS user sta-
tion can connect and monitor activity on either or both channels. A single PS-20 power supply has 1.8 ampere per channel which
means the user can power up more stations (see specications for details). If additional user stations or beltpacks are needed,
two PS-20’s can be joined together to double the power capability. A pair of standard stereo plug connectors are available on the
back of the power supply to connect two PS-20’s through audio linking as well . The PGM IN (3-pin XLR female Program Input)
connector can be used to send audio to both CH 1 and/or CH 2.
Selectable Mode Operation
The PS-20 is selectable between RTS 2-channel, RTS
4-channel and Clear-Com mode.
Audio Linking
There is an audio link connection (¼” (6.3mm) Stereo plug)
on the back of the unit.
Monitoring
The 3-pin XLR Monitoring output connector on the front of
the PS-20 allows the user to connect a RTS user station to
monitor a channel or both channels.
Status Indicators
There is a green status indicator for each channel on the
front of the unit. Each of these indicators will remain lit during
normal operation, but will turn 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. 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 (user stations) 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 200Ω or 400Ω operation. Select
200Ω for each channel operated independently. Select 400Ω
for each channel connected to another channel.
Features
Line Drawing