NORTHROP GRUMMAN T6MC, User Documentation

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Park Air T6MC Controller Page 3-5 Operation
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ac Voltage Selector
Facilities Connector
A chassis mounted 15-way D-type socket used to terminate external signal connections. The pin-out of
this connector is detailed in
Table 3-2 .
Table 3-2 Facilities Connector (CN1) Pin-Out
Facilities
Connector
Pin
Signal
Input or
Output
Notes
1
2 Audio line L1
Audio line L2 Both 600 ohm balanced audio line. The line carries transmit and
receive audio. Phantom keying is superimposed on the
transmit audio.
3 External PTT Input or
output When used as an output, can be used to key the transmitter
as an alternative to phantom keying. When used as an
input, this connection allows an external PTT signal (0 volt
active; 12 volt not keyed) to be used as an alternative to the
front panel microphone PTT. The input can be connected,
for example, to a footswitch.
6
4
7
5 Transmit audio line L1
Transmit audio line L2
Receive audio line L1
Receive audio line L2 Output
Output
Input
Input 600 ohm balanced transmit and receive audio lines.
Phantom keying is superimposed on the transmit audio
lines. These audio lines are used for both phantom keying
and external PTT configurations.
8
9
10
Not used
Not used
Not used -
-
- Do not connect to this pin.
Do not connect to this pin.
Do not connect to this pin.
11
12
External dc input +
Ground (dc input -) Input
Input Used when the controller is operated from a dc input supply,
or when a dc supply is used as a backup to an ac input
supply.
13
14 Cradle switch
Cradle switch Input
Input Optional facility that allows loudspeaker switching when
using a handset cradle. Before using this optional facility,
link LK3 must be removed from the controller's PCB
(see
Fig 7-7 ).
15 Tape/sidetone Output Single-ended audio connection at a maximum level of 6 V
peak-to-peak. The output is both transmit and receive
audio.
220
11
0
This component selects between the 110 to 120 Vac input supply
range and the 220 to 240 Vac range.
The correct range must be
selected before the ac supply is connected to the controller.

Between 110 Vac and 120 Vac the selector must be set to 110

Between 220 Vac and 240 Vac the selector must be set to 220.