User manual

5
Reference View
1. Channel Indicator LEDs - Provides a visual indication of the channel DC power. A green LED displays for normal
operation and a red LED displays when there is an overload or short circuit.
2. Monitor Output - Front panel connection for system administrator to listen (can talk as well) to channel 1, channel 2
or both. This is a 3-pin XLR (male). In Clear-Com mode, only channel one (1) is heard. A user station or beltpack is
required to use this feature.
3. Channel Select - Use the channel switch to select channel 1, channel 2 or both channels. The channel select
determines which channel the Program Input is connected
4. Level Control - Controls the volume of the program output selected: channel 1, channel 2, or both.
5. ON/OFF switch - Powers the PS-20 power supply.
6. AC Connection - This unit accepts any input power in the range of 90 to 240 VAC, 50 to 60 Hz.
7. Mode Selection Switch - Allows you to select between RTS 2 channel, RTS 4 channel or Clear-Com modes of
operation. For more on Modes of Operation, see “Mode Selection Switch” on page 15.
8. Termination Impedance Switch - Allows you to select between either 200Ω or 400Ω. 400Ω impedance termination
is most commonly used when connecting two channels on two (2) different PS-20s together.
9. PGM IN - A 3-pin XLR (female) connection allows the user to put a program source (i.e., a radio) on the channels.
10. Output Connectors - Channel 1 and Channel 2 Output connectors can be configured to work in RTS-TW 2-channel,
RTS-TW 4-channel, or Clear-Com mode. These are 3-pin XLR (male).
11. Audio Link CH1&2 and CH3&4 - Connects up to two PS-20s together. For more information, see Figure 2 on
page 8.
12. Rubber Adhesive Feet - The unit can be rack-mounted or can use feet for desktop usage. For more information on
rack mounting options, see Figure 7 on page 13.
FIGURE 1. PS-20 Reference View