PS-31
RTS
PS-31
RTS PS-31 Power Supply
The device supplies 32 volts of regulated DC power to each of three intercom channels. It has short circuit and thermal overload protection, with automatic recovery when the fault is removed.
Product Weight: 14.5 lbs
Dimensions: 3.5”H x 19”W x 10.5”D
Technical Tools
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Manufacturer Specs
Channels
Three
Connectors
Six XLR-3 type connectors (two channel)
Three XLR-4 type connectors (three channel)
One XLR-3 type connector (program input)
DC Output Voltage (each channel)
32 volts nominal
Line Terminating Impedance (each channel)
200 Ω switchable to 400 Ω when operating two supplies in parallel
Output Current Ratings
Max before fault indication: 1.5 amps
Sustained overload 50°C ambient: 20 amps
Max before foldBack limiting: 2.5 amps
Short circuit current: 0.5 amps
Startup current: 0.5 amps
Max Total Sustained Current (50°C ambient)
2.0 amps
Intercom Audio
Level: 2 volts pp nominal
Head Room: 6 dB minimum
Frequency Response: 75 Hz to 20 kHz (-3 dB) unloaded
Signal to Noise and Hum Ratio (Ref to 2 V pp)
-60 dB
Program
Input: Balanced or unbalanced, transformer isolated, program assignable to channels 1-3
Program Input Sensitivity: 28 dBm to +14 dBm (Ref. 600 Ω) for 2 volts pp on RTS line
Input Impedance: 10,000 Ω
Frequency Response (-3dB): 100 Hz to 20 kHz input to RTS line.
Indicators
Channel Status: three green LEDs
Channel Fault: one red LED and one audible alarm
Thermal Overload: one red Neon type
Switches
One program channel assign switch; one audible alert on/off switch; one power switch; three 200/400-Ω impedance
select switches
Temperature
32° to 122°F operating
32° to 167°F storage
Power Requirements
Voltage: 100, 120, 200, or 40 VAC, 50/60 Hz versions available
Power: 100 volt-amps
Fuses
AC panel fuse: 100/120 volts-3A slow blow; 200, 240 volts - 1.5A slow blow
Internal DC fuses (each channel): 6A fast blow
Three
Connectors
Six XLR-3 type connectors (two channel)
Three XLR-4 type connectors (three channel)
One XLR-3 type connector (program input)
DC Output Voltage (each channel)
32 volts nominal
Line Terminating Impedance (each channel)
200 Ω switchable to 400 Ω when operating two supplies in parallel
Output Current Ratings
Max before fault indication: 1.5 amps
Sustained overload 50°C ambient: 20 amps
Max before foldBack limiting: 2.5 amps
Short circuit current: 0.5 amps
Startup current: 0.5 amps
Max Total Sustained Current (50°C ambient)
2.0 amps
Intercom Audio
Level: 2 volts pp nominal
Head Room: 6 dB minimum
Frequency Response: 75 Hz to 20 kHz (-3 dB) unloaded
Signal to Noise and Hum Ratio (Ref to 2 V pp)
-60 dB
Program
Input: Balanced or unbalanced, transformer isolated, program assignable to channels 1-3
Program Input Sensitivity: 28 dBm to +14 dBm (Ref. 600 Ω) for 2 volts pp on RTS line
Input Impedance: 10,000 Ω
Frequency Response (-3dB): 100 Hz to 20 kHz input to RTS line.
Indicators
Channel Status: three green LEDs
Channel Fault: one red LED and one audible alarm
Thermal Overload: one red Neon type
Switches
One program channel assign switch; one audible alert on/off switch; one power switch; three 200/400-Ω impedance
select switches
Temperature
32° to 122°F operating
32° to 167°F storage
Power Requirements
Voltage: 100, 120, 200, or 40 VAC, 50/60 Hz versions available
Power: 100 volt-amps
Fuses
AC panel fuse: 100/120 volts-3A slow blow; 200, 240 volts - 1.5A slow blow
Internal DC fuses (each channel): 6A fast blow