Inter-M PAM-520 - Manual (Page 10)

7 PAM-510/520
ATT. ZONE AMPLIFIER
5. EM(EMERGENCY)
When EM switch is connected and pressed in fire or other emergencies, EM broadcasting stored in VOICE IC
is outputted. When selected, these switches will give priority to over all other signals inputs.
6. ANTENNA CONNECTOR(OPTIONAL)
This terminal is used to connect the antenna, when used with the optional PAM-T AM/FM Tuner module.
7. PHANTOM POWER SWITCH
This switch turns the phantom power supply on or off for all channels. When the switch is turned on, +24V DC
power is supplied to pins 2 and 3 of each channel’s input connector.
Use phantom power when connecting condenser microphones, which require an external power supply.
NOTE:
It is safe to connect most modern dynamic microphones or line level devices 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 active.
8. MIC 1 PRIORITY SWITCH
When selected, these switches will give priority to Channels 1 over all other channels inputs.
9. INPUT GAIN CONTROLS(TRIM VR)
These knobs provide continuous control of the input levels for each of the six input channels. When adjusting
the input gain, make certain that the levels are not set too high, or distortion will result.
10. AC POWER INPUT
Connect a standard three-pin AC cable to this connector.
11. DC INPUT TERMINALS
These terminals are provided for the connection of backup battery. Connect a 24VDC 50A battery source to
these terminals. Make certain the red terminal is connected to the battery’s positive (+) side, and the black
terminal to the battery’s negative (–) side.
12. REMOTE POWER
You can turn on/off amplifier by remote control.