Ac Voltage Selector; Facilities Connector - NORTHROP GRUMMAN T6MC User Documentation

ac Voltage Selector

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.


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
Facilities
Connector Signal
Pin
1 Audio line L1
2 Audio line L2
3 External PTT
6 Transmit audio line L1
4 Transmit audio line L2
7 Receive audio line L1
5 Receive audio line L2
8 Not used
9 Not used
10 Not used
11 External dc input +
12 Ground (dc input -)
13 Cradle switch
14 Cradle switch
15 Tape/sidetone
Park Air T6MC Controller
Table 3-2.
Table 3-2 Facilities Connector (CN1) Pin-Out
Input or
Output
Both 600 ohm balanced audio line. The line carries transmit and
receive audio. Phantom keying is superimposed on the
transmit audio.
Input or When used as an output, can be used to key the transmitter
output 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.
Output 600 ohm balanced transmit and receive audio lines.
Output Phantom keying is superimposed on the transmit audio
Input lines. These audio lines are used for both phantom keying
Input and external PTT configurations.
- Do not connect to this pin.
- Do not connect to this pin.
- Do not connect to this pin.
Input Used when the controller is operated from a dc input supply,
Input or when a dc supply is used as a backup to an ac input
supply.
Input Optional facility that allows loudspeaker switching when
Input using a handset cradle. Before using this optional facility,
link LK3 must be removed from the controller's PCB
(see
Output Single-ended audio connection at a maximum level of 6 V
peak-to-peak. The output is both transmit and receive
audio.
Page 3-5
Notes
Fig 7-7).
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Operation