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85
2001 NEW
2001 NEW
CONNECTIONS AND INSTALLATION
9
MICROPHONE
Pin Pin name
Description
Specification
y
t
r
q
w
e
i
u
1
MIC (+) Audio input from the mic element. Input impedance: 2.4 kΩ
2
MIC SW Key detection.
–
3
AF1
AF output controlled by [VOL].
–
4
AF2
Ground for AF1.
–
5
PTT
PTT switch input.
Transmits when grounded.
–
6
GND
Connected to ground.
–
7
MIC (–) Coaxial ground for MIC (+).
–
8
AF (–)
Coaxial ground for AF1 and AF2.
–
Front panel view
■
Connector information
AF/MOD
Pin Pin name
Description
Specification
1
5
11
15
1~4
NC
NOTE:
Do not connect to these
pins.
–
5
DSSW
Remote alarm input
When connected to GND, the
transceiver sends a Distress call.
Can be used as an external
Distress switch.
–
6, 7
NC
NOTE:
Do not connect to these
pins.
–
8
DSLD
Remote alarm output
Connect external equipment such
as a lamp or buzzer that needs a
power source, between this pin
and GND.
When receiving a Distress call*,
the key backlight blinks and
the internal relay intermittently
connects between this pin and
GND.
Applicable voltage: Less than 30 V
Current flow: Less than 1 A
9, 10
GND
Ground
–
11
MOD (+) Modulation input from an external
unit for the SSB.
Input impedance: 600 Ω
Input level: Approximately 0.77 V rms
12
MOD (–) Coaxial ground for MOD (+).
Input impedance: 600 Ω
13
AF (+)
AF detector output for an external
unit for SSB.
Output impedance: 600 Ω
Output level: 0.25 ~ 2.5 V rms
14
AF (–)
Coaxial ground for AF (+).
Output impedance: 600 Ω
15
SEND
Transmission control line for an
external unit for SSB (transmits
when grounded).
Output level: –0.5 ~ 0.8 V
Input level: Less than 20 mA
Front panel view
* A DSC call that is related to “Distress” as described below
• Distress call
• Distress acknowledgement
• Distress Relay call
• Distress Relay acknowledgement
• Distress Cancel call
• DSC call whose category is “Distress”