RTS PS-20 Power Supply

The RTS PS-20 is a Two-Wire Intercom 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-channel 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 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. 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.

RTS PS-20 Features

• Audio Linking
• Intercom Channels Connections
• Monitoring
• Program Input
• Selectable Mode Operation
• Selectable Termination Impedance
• Status Indicators

• PS-20 Power Supply1

• Input Voltage100 to 240 VAC, 50 to 60Hz
• Output Voltage28VDC to 32VDC
• Output Current1.8 Amps Maximum per channel
• Termination Impedance
  • Selectable 200Ω/400Ω
  • 1.8 Amps maximum per channel
• Ripple< 0.2V
• Program Input Levels
  • Nominal +2dBu
  • Balanced, High Impedance >10kΩ
• Two-Wire Output Levels
  • Nominal 30VDC
  • Unbalanced, selectable 200Ω/400Ω
• Monitor OutputNominal Gain of 0 dB for 1.0Vrms input level on the program input. 30VDC nominal, 100mA maximum.
• Audio LinkNominal input 2dBu with a Gain of 0 dB
• Connections
  • Type: 3-pin XLR male (RTS 2-channel Mode)
    • Pin 1: Common for Audio and DC
    • Pin 2: 30VDC and Mixed Audio Channel 1
    • Pin 3: 30VDC and Mixed Audio Channel 2
  • Type: 3-pin XLR male (RTS 4-channel Mode)
    • Pin 1: Common for Audio and DC
    • Pin 2: 30 VDC and Mixed Audio Channel 1 or 3
    • Pin 3: Mixed Audio Channel 2 or 4
  • Type: 3-pin XLR male (Clear-Com Mode)
    • Pin 1: Common for Audio
    • Pin 2: 30VDC
    • Pin 3: Mixed Audio Channel 1 or 2
• Program Input
  • Type: 3-pin XLR female
    • Pin 1: Common
    • Pin 2: Balanced Audio + Input
    • Pin 3: Balanced Audio – Input
• Audio Link
  • Input ¼-inch Stereo Phono Jack
    • Tip: CH 1
    • Ring: CH 2
    • Sleeve: Ground
  • Output ¼-inch Stereo Phono Jack
    • Tip: CH 1
    • Ring: CH 2
    • Sleeve: Ground
• AC Input
  • Type: Universal AC Plug
    • Pin 1: Hot
    • Pin 2: Neutral
    • Pin 3: Earth Ground
• Monitor Output
  • Type: 3-pin XLR male (RTS 2-channel Mode)
    • Pin 1: Common for Audio and DC
    • Pin 2: 30VDC and Mixed Audio Channel 1
    • Pin 3: 30VDC and Mixed Audio Channel 2
  • Type: 3-pin XLR male (RTS 4-channel Mode)
    • Pin 1: Common for Audio and DC
    • Pin 2: 30VDC and Mixed Audio Channel 1
    • Pin 3: Mixed Audio Channel 2
  • Type: 3-pin XLR male (Clear-Com Mode)
    • Pin 1: Common for Audio
    • Pin 2: 30VDC
    • Pin 3: Mixed Audio Channel 1 or 2
• Environmental
  • Operating Temperature: 0°C to 50°C (32°F to 122°F)
  • Storage: -40°C to 70°C (-40°F to 158°F)
  • Humidity: 0 to 95%, non-condensing
• Dimensions and Finish
  • Height: 1.72 in (44 mm)—1 RU (Rack Unit)
  • Width: 8.186 in (207.9 mm)
  • Weight: Under 5 lbs
  • Finish: Thermoplastic front panel, Aluminum case, RTS light gray paint—black silkscreen.
  • Mounting: MCP style rack kit or (included rubber adhesive feet)