Power On / Off Switch (1); Output Level Meter (3); Configuration; Priority - Optimus PM-CH7 Manual De Instalación Y Funcionamiento

4.13. POWER ON / OFF SWITCH (1)

Push POWER button to switch ON / OFF the unit. A power LED lights up when the power is
switched ON. In a PA system the pre-amplifier must always be switched ON in first place and
switched OFF last.

4.14. OUTPUT LEVEL METER (3)

A 5 LED bar displays unit's output level. When the red LED Lights up, the output level should
be reduced.

5. CONFIGURATION

5.1. PRIORITY

The priority mode can be set with jumpers SW9, SW10, SW11 to Block before, Block behind or
Serial mode.
Serial mode: CH1 has the highest priority and CH7 the lowest one (CH1 > CH2 > CH3 >
CH4 > CH5 > CH6 > CH7).
Block before mode: Among CH1, CH2, CH3, CH4, CH5 & CH6, the first activated Channel
input has the highest priority and blocks all other channels including CH7.
Block behind mode: Among CH1, CH2, CH3, CH4, CH5 & CH6, the last activated channel
input has the highest priority and blocks all other channels including CH7.

5.2. DIP SWITCH CH1 / CH6 (5)

It is possible to change some equipment parameters by means of rear panel switches.

5.2.1. SPECIFIC CH1 PARAMETERS

Chime / Off: Set at Chime, preannouncement chime tone sounds when CH1 trigger
terminal is connected. The chime signal will mute any other signal except TEL / EMER
signal. Set to Off, it will disable chime output and priority as well. Chime output signal level
can be adjusted by rotary control on the rear panel (4).
PTT / Off: When set to PTT is necessary that trigger contact is activated to broadcast CH1
audio signal. Set to off CH1 audio will always be broadcasted.
In both cases all other inputs will be muted when trigger contact is closed.

5.2.2. CH1-CH6 PARAMETERS

CH1 LINE / MIC: Selects -60 dB (MIC) or 0 dB (LINE) input sensitivity.
PHANTOM / OFF: Selects phantom power ON / OFF, Single dipswitch operates both channels,
so you must be careful when activating this function. Phantom power cannot be set in line
mode.
PM-CH7 Version 1.0
PM-CH7
Preamplifier
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