Innovating the Future of Global Communications

Technical Data Sheet

The RTS PS-20 is a complete independent

TW (Two-Wire) power supply. The PS-20 features 2- and 4-channel operation,

RTS monitoring, 2-channel program input, audio linking, and 3-mode operation: RTS 2-channel, RTS 4-channel and

Clear-Com mode. It also has double the power output of the PS-31 per channel, this increases the number of user stations

and beltpacks which can be connected substantially.

The PS-20 features two (2) channels of communication where both channels are wet, meaning there is power on each

channel (RTS 2-channel mode). In RTS 4-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 station 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 specifications for details). If additional user stations or

beltpacks are needed, two (2) 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.

• The PS-20 is selectable between RTS 2-channel,

RTS 4-channel and Clear-Com mode.

• There is an audio link connection (¼-inch (6.3 mm)

stereo plug) on the back of the unit.

• 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.

• 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.

• 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 (user stations) are connected to the

rear panel of the PS-20 with 3-pin XLR connectors.

• 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

PS-20

Power Supply

Line Drawings