ADPRO VM22A, Issue 6
10
5.6 Installation
Procedure
Ensure the FastVu and other equipment to be connected is switched off. Connect
the system using Figure 4 and the following steps as a guide.
At the Fast Scan Receiver
Generally at the Fast Scan Receiver end of the system, one microphone and one
speaker are connected to the VM22A Audio Switcher (refer to Figures 6 and 7).
1.
By referring to Section 5.4 and Figure 2, set the front panel switches as
follows:
•
SW1 = ON or OFF
ON = ‘AGC’ input level control, otherwise
OFF = Manual input level control.
•
SW2 = ON or OFF
ON = direct microphone input, otherwise
OFF = Line input.
•
SW3 = ON
‘Broadcast In’ mode selected.
•
SW4 = ON
‘Broadcast Out’ mode selected.
2.
Place the VM22A Audio Switcher within one metre of the Fast Scan
Receiver.
3.
Connect the supplied 15 way ribbon cable from the Fast Scan Expansion I/O
port to the VM22A’s Expansion I/O port.
4.
Connect the speaker or audio amplifier to Audio Output #1 (located on
‘Audio Outputs 1-5’ connector, Pins 1(+) and 2(-)).
5.
Connect the microphone to Audio Input #1 (located on ‘Audio Inputs 1-5’
connector, Pins 1(+), 2(-) and 3(shield)).
6.
Depending on the system configuration, audio may be enabled from the
Receiver to the Transmitter via the ‘Press to talk’ input or the ADPRO AMK-
300 Keyboard. If using the ‘Press-to-talk’ input, connect the ‘Press to Talk’
input of the ‘Auxiliary I/O’ connector (Pin 4 and Pin 7 - Ground) to the
microphone press button. If the microphone has no press-button, connect
the Auxilliary I/O input through an external switch to ground.
7.
Connect the 12 VDC supply to the VM22A and switch on all equipment.
