12540

Icom IC-FR3100 FR4100 Manual

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1
PANEL DESCRIPTION
D Remote connector
Pin No. Pin Name Description Specification
1
2
3
4
5
6
7
8
–PTT
+PTT
–AFOUT
+AFOUT
–EXTMOD
+EXTMOD
–BUSY
+BUSY
Input terminals to transmit the repeater in rela-
tion to the external equipment. An opto-isolator
is provided to facilitate PTT signals.
Output terminal for AF signals from the AF de-
tector circuit via the bandpass filter. Output level
is fixed, regardless of [AF] control.
Input terminal for the modulation circuit.
Output terminal for squelch condition
(Open/Close). An opto-isolator is provided to fa-
cilitate BUSY signals.
High voltage=PTT ON (transmits)
Hi-Z=PTT OFF
Output impedance: 600 Ω
Input impedance: 600 Ω
Open collector=BUSY OFF
0 V=BUSY ON (Squelch is opened)
q
i
D Accessory connector
Pin No. Pin Name Description Specification
1
2
3
4
5
6
7
8
9
10
11
12
13
14
BUSY OUT
COAXIAL SW
M/S IN
D1
D3
EXT RPT/BASE
EXT MONI
EXT DTCS
EXTMOD IN B
EXTMOD IN A
AF OUT
DISC OUT
+15V
TX OUT
Output terminal for busy signal.
Output terminal for coaxial switching (antenna switching)
signal.
Input terminal for master/slave signal.
Input terminal for selecting memory channel.
Input terminal for selecting memory channel.
Input terminal for repeater/base operating mode switching
signal.
Input terminal for monitor function.
Input terminal for continuous tone (CTCSS/DTCS) signal.
Input terminal for the modulation signals applied to input of
the splutter filter circuit.
Input terminal for the modulation signal applied to input of
the pre-emphasis circuit via the bandpass filter.
Output terminal for AF signals from the AF detector circuit
via the bandpass filter. Output level is fixed, regardless of
[AF] control.
Output terminal for AF signals from the AF detector circuit.
Output level is fixed, regardless of [AF] control.
Output terminal for +15V DC while in AC operation. (While in
DC operation, same as input DC.)
Output terminal for transmission state.
Open collector=OFF, 0 V=ON
Open collector=OFF
0 V=ON
+5 V pull up, Active=L
+5 V pull up, Active=L
+5 V pull up, Active=L
+5 V pull up
Active=L
+5 V pull up, Active=L
Input impedance: 100 kΩ (approx.)
Input impedance: 600 Ω (approx.)
Input impedance: 600 Ω (approx.)
Output impedance: 1 kΩ (approx.)
Output impedance: 1 kΩ (approx.)
Output current: Less than 1 A
Open collector=OFF, 0 V=ON
q!3
!4@5
… 6 …


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