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DIGITAL PA SYSTEM
•RS-232 PIN
•Controllable operation
All functions except for some are available and you can check their detailed contents if downloading data
for control protocol.
•Downloading of control protocol
Please download the protocol at the inter-m site, www.inter-m.com, SUPPORT / DOWNLOAD folder.
7. CHIME VOLUME
This is a volume to control Chime Level.
8. PRE OUTPUT
This is the unbalanced output. This output can be used to record the signal from the unit.
The output level is not controlled by the master volume.
9. UX IN
This is the unbalanced input. This input can be used to connect a tape player or other sound sources.
10. MIC PRIORITY SELECT SWITCH
This is a switch to select priority of MIC broadcasting.
1) MIC 1, 2 mode : Signal from any MIC 1 or 2 input will mute all other audio signals.
2) ALL mode : Signal from any MIC 1~5 input will mute all other audio signals.
3) OFF mode : When this switch is in the OFF position, the MUTE function is disabled. Signal from any MIC input
will have no effect.
11. INPUT G IN CONTROLS (TRIM VOLUME)
These are trim volumes of each MIC inputs to control the input gain.
When adjusting the input gain, make sure that the levels are not set too high, or not it may cause noisy or distorted output.
12. PH NTOM POWER SWITCH
These switches turn the phantom power supply on or off for each channel.
When the switch is pushed, +24V DC power is supplied to the pin 2 and the pin 3 of XLR jack. Use phantom
power when you connect a condenser microphone, which requires an external power supply.
※ Caution: It is safe to connect most modern dynamic microphones to the channel inputs when phantom power is
activated. However, some older ribbon microphones may be damaged by phantom power, and
certain unbalanced line level devices may malfunction or produce an audible hum when phantom
power is turned on. Use the phantom power only you use a condenser microphone.
If you press the phantom power switch when the channel volume and master volume is at the high
volume level, it may cause audible pop sound.
10
PSI-5120A/5240A
Pin
1
2
Purpose
Not Used Receive
3
4
5
Transmit Not Used Ground Not Used
6-9
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