Barnett Engineering B1474 User Manual
Page 20
B1474
BARNETT EN GI NEERING LTD.
PAGE 19
+V
8
INPUT VOLTAGE
GROUND
TX WL
TX WL
TX RADIO
7
6
5
4
3
9
1
PIN
SYMBOL
DESCRIPTION
GND
2
RX RADIO
RX WL
RX WL
SQL
PTT
TRANSMIT OUTPUT, SINGLE ENDED
TRANSMIT OUTPUT, BALANCED
RECEIVE INPUT, BALANCED
SQUELCH DETECTOR INPUT
RECEIVE INPUT, SINGLE ENDED
}
}
P3 DIG I TAL
P1 AU DIO
8
PIN
7
5
4
3
2
1
10
SYMBOL
GND
TXD
RXD
RTS
CTS
SIG GND
CD
CARRIER DETECT
RECEIVE DATA
CLEAR TO SEND
SIGNAL GROUND
REQUEST TO SEND
TRANSMIT DATA
CHASSIS GROUND
PUSH TO TALK OUTPUT
8 CON NEC TIONS