ADPRO VM22A Installation & User Manual
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Contents
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ADPRO VM22A, Issue 6 7When the ‘External Amplifier’ link position is selected, audio from an active channelis passed through to the external amplifier. Only one channel of audio can be activeat the one time.5.4 VM22A SwitchesThere are four switches accessible via the dipswitch on the front panel. To select afunction, move the switch to the ON position.SWITCH FUNCTIONON Manual Gain Control on each inputSW1OFF Automatic Gain Control (AGC) on each inputON Microphone input levels (0.1mV - 10mV rms)SW2OFF Line input levels (10mV - 400mV rms)ON Broadcast In – Audio input routed to Channel 1independent of FastVu channel selectionSW3OFF Normal – FastVu selects output channelON Broadcast Out – Audio output routed to Channel 1independent of Fast Scan channel selectionSW4OFF Normal – FastVu selects input channelSW1=ON - Manual Level ControlWhen Switch 1 is in the OFF position, individual channel input levels are set viaindividual volume potentiometers located on the front panel of the VM22A.Manual setting of an input level can be made in conjunction with the two LEDindicators on the front panel:• Green led illuminated – sufficient audio level.• Red led illuminated – excessive audio level. |
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