Park Air Systems T6TR, User Documentation

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T6TR VHF 50 W Transceiver Page 27 Installation
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Facilities Connector
The Facilities connector is a 15-way D-type filtered socket used for connecting to associated parts of a
system. The connector pin-out is shown below and detailed in Table 13.
Table 13 Facilities Connector
Pin Number Signal Characteristic
1 Ground 0 V.
2 E-BIT (input) An external BIT input that connects from any ancillary equipment
having a compatible BIT alarm output.
When this input is active, the transceiver’s front panel Alarm indicator
flashes and an E-BIT message is displayed on the LCD. The input is
TTL having a 4.7 kohm pull-up resistor to 5 V. The input is
configurable from the front panel to be active high or low.
3 PTT (output) Grounding solid state relay. +60 to -60 V ac or dc, 100 mA max,
configurable n/o or n/c. Activated 35 ms (±1 ms) before the start of the
power ramp up to allow for the antenna relay pull in time.
4 External VSWR (input) TTL input with 4.7 kohm pull-up to 5 V. Configurable active high or
low.
5 Squelch (output) Solid state relay linked to pin 6. +60 to -60 V ac or dc, 100 mA max,
configurable n/o or n/c. Contact closure time is less than 20 ms.
6 Squelch common
(output) Solid state relay linked to pin 5.
7 Squelch defeat (input) TTL with 4.7 kohm pull-up to 5 V. Configurable active high or low.
8 Ground 0 V.
9 Unregulated supply
(output) 21.6 to 32 V, fused at 500 mA.
10 Inhibit (Input) TTL with 4.7 kohm pull-up to 5 V. Configurable active high or low.
11 BIT Interruptive test
(input) TTL with 4.7 kohm pull-up to 5 V. Configurable active high or low.
Must be asserted for >300 ms.
12 RSSI (output) 0 to 10 V.
13 Ready (output) Open collector NPN transistor grounding output, 200 mA max,
configurable n/o or n/c.
14 Tape (output) 0 dBm fixed output into 600 ohm for 90% modulation depth.
15 Reserved (output) Open collector NPN transistor grounding output, 200 mA max,
configurable n/o or n/c.
1 8
9 15
Pin-out of Facilities connector looking into the mating face of
the chassis mounted socket.
A suitable free socket is detailed in Table 2 on page 4 .