Park Air Systems Limited B6350 Manuel D’Utilisation
Table 1-3. Facilities Connector CN5 Pin-Out
Pin
Number
Signal Name
Description
1
Ground
0 volt.
2
Line In (+)
Pins 2 and 3 present a 600 ohm balanced audio input to the
transmitter for use in AM modes. The input level is adjustable
between -40 dBm and 0 dBm. Phantom keying can be
superimposed on the audio lines. See ‘Selecting the Applicable
Keying Method’ in section 2 on page 10.
transmitter for use in AM modes. The input level is adjustable
between -40 dBm and 0 dBm. Phantom keying can be
superimposed on the audio lines. See ‘Selecting the Applicable
Keying Method’ in section 2 on page 10.
3
Line In (-)
4
External VSWR
An input signal to the transmitter to indicate a VSWR fault in the
antenna circuit. When this signal is active, the transmitter's output
power is reduced by 10 dB and a VSWR warning is indicated. This
is a TTL input pulled-up to 5 V; the active signal is 0 volt.
antenna circuit. When this signal is active, the transmitter's output
power is reduced by 10 dB and a VSWR warning is indicated. This
is a TTL input pulled-up to 5 V; the active signal is 0 volt.
5
Antenna
Change-Over
Change-Over
An output signal that can be used to control an antenna
change-over relay when the transmitter is used in conjunction with a
T6R receiver. Antenna change-over is a grounding output; the
active (transmitter keyed) polarity is always the same as the PTT
output signal on pin 6. Maximum current sink is 100 mA.
change-over relay when the transmitter is used in conjunction with a
T6R receiver. Antenna change-over is a grounding output; the
active (transmitter keyed) polarity is always the same as the PTT
output signal on pin 6. Maximum current sink is 100 mA.
6
PTT Output
This output, when active, indicates the transmitter is keyed. It is a
grounding output. The active polarity is set from the front panel.
Maximum current sink is 100 mA.
grounding output. The active polarity is set from the front panel.
Maximum current sink is 100 mA.
7
Remote PTT
An input signal used to key the transmitter. The active signal can be
0 volt, or a dc level between +10 and +50 volt, or a dc level between
-10 and -50 volt. Internal jumpers JP8 and JP9 must be correctly set to
suit the required keying potential (see ‘Remote Keying Configurations’
in section 2 on page 11). The active polarity is set from the front panel.
0 volt, or a dc level between +10 and +50 volt, or a dc level between
-10 and -50 volt. Internal jumpers JP8 and JP9 must be correctly set to
suit the required keying potential (see ‘Remote Keying Configurations’
in section 2 on page 11). The active polarity is set from the front panel.
8
Ground
0 volt.
9
Unregulated Supply
A dc output supply between 21.6 and 32 volt. The supply is fused
at 500 mA.
at 500 mA.
10
Tx Inhibit
This input signal, when active, prevents the radio from being
keyed. This is a TTL input pulled-up to 5 V; the active polarity is set
from the front panel.
keyed. This is a TTL input pulled-up to 5 V; the active polarity is set
from the front panel.
11
BIT Interruptive Test
An input signal that initiates a BIT interruptive test. This is a TTL
input pulled-up to 5 V. The active polarity of this signal is set from
the front panel. The input signal must be active for a minimum of
300 ms; the signal cannot then be activated again for at least
3 seconds.
input pulled-up to 5 V. The active polarity of this signal is set from
the front panel. The input signal must be active for a minimum of
300 ms; the signal cannot then be activated again for at least
3 seconds.
12
Not Used
Pin 12 is internally connected. Do not make any connections to
this pin.
this pin.
13
Ready Output
This output is active when the radio is ready to transmit and no
faults have been detected by the BIT circuitry. It is an open
collector output. The active polarity is set from the front panel.
faults have been detected by the BIT circuitry. It is an open
collector output. The active polarity is set from the front panel.
14
Tape Output
An audio output for connection to a recording system. The output
is nominally -10 dBm into 100 ohm.
is nominally -10 dBm into 100 ohm.
15
Not Used
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T6T General Information
Section 1
Page 17