Park Air Systems T6TR, Пользовательская документация

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T6TR VHF 50 W Transceiver Page 28 Operation
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FAC Squelch
Out
(FAC Sql Out)
Facilities, pin 5 Normally open relay contact
that closes when the squelch
circuits are defeated (aircraft
calling). The relay contact can
be configured to switch any
potential between -60 V and
+ 60 Vdc. Normally closed relay contact
that opens when the squelch
circuits are defeated (aircraft
calling). The relay contact can
be configured to switch any
potential between -60 V and
+ 60 Vdc.
Phantom Squelch
Out
(Phan Sql Out)
MARC, pin 2
MARC Audio, pin 1 Phantom Squelch. Normally
open relay contact that closes
to connect a 0 V phantom
potential to the audio lines
when the squelch circuits are
defeated (aircraft calling). Phantom Squelch. Normally
closed relay contact connecting
a 0 V potential to the audio
lines that opens when the
squelch circuits are defeated
(aircraft calling).
Squelch defeat in
(Sql Def In)
Facilities pin 7 TTL input. 0 V switches off the
squelch circuits. TTL input. 5 V switches off the
squelch circuits.
PTT Ref - PTT Ref can be set to +14 V,
0 V or -14 V. PTT. Maximum
input level ±60 V with respect
to PTT reference. Input will
draw no more than 6 mA, and
requires at least 1 mA to
operate.
When the input PTT signal and
the PTT reference differ by
more than 10 V the radio keys.
When the input PTT signal and
the PTT reference are within
1 V, the radio dekeys.
Other conditions are
indeterminable.
PTT Ref can be set to +14 V,
0 V or -14 V. PTT. Maximum
input level ±60 V with respect
to PTT reference. Input will
draw no more than 6 mA, and
requires at least 1 mA to
operate.
When the input PTT signal and
the PTT reference differ by
more than 10 V the radio
dekeys.
When the input PTT signal and
the PTT reference are within
1 V, the radio keys.
Other conditions are
indeterminable.
Table 8 AM-Voice and AM-MSK Polarity Settings
Signal Connector Polarity set to STD Polarity set to INV