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Terminal Descriptions
.
COM Connector
Pin No. Pin Name Function Input/Output
1 NC No connection
2 RXD Sends serial data from this transceiver to RXD on the PC. O
3 TXD Receives serial data from TXD on the PC to this transceiver. I
4 NC No connection
5 GND Signal ground
6 NC No connection
7 RTS
Sends signal from RTS on the PC to this transceiver. If the PC is unable to accept incoming data, an
L level signal is output from the PC to this transceiver and data will not be sent in this case.
I
8 CTS
Sends signal from this transceiver to CTS on the PC. If this transceiver is unable to accept incoming
data, an L level signal is output from this transceiver to the PC and input of incoming data will be
forbidden.
O
9 NC No connection
.
GND:
Connect to metal shield.
REMOTE Connector
Pin No. Pin Name Function Input/Output
1 SPO Speaker out O
2 COM Common terminal of the built-in relay for linear amplifier control I/O
3 SS
PTT input
Sends signal by grounding the SS terminal.
I
4 MKE
Make terminal of the built-in relay for linear amplifier control
The make terminal can be connected to the common terminal during transmission by configuring
Internal Relay Control ” (16-14) of the linear amplifier menu.
Rated control capacity of relay contact: 2 A/ 30 V DC (resistance load)
Maximum allowable voltage of relay contact: 220 V DC, 250 V AC
I/O
5 BRK
Break terminal of the built-in relay for linear amplifier control
The break terminal can be connected with the common terminal when the latter is not connected
to a make terminal.
Rated control capacity of relay contact: 2 A/ 30 V DC (resistance load)
Maximum allowable voltage of relay contact: 220 V DC, 250 V AC
I/O
6 ALC
ALC input from the linear amplifier
This is a negative input. The ALC circuit starts to operate from an input of approximately -4 V (which
can be changed from the Linear Amplifier menu).
I
7 LKY
Linear amplifier control output
The output logic during transmission can be configured using “ Keying Logic (16-14) of the linear
amplifier menu.
“Active High”: Outputs DC 12 V during transmission. The maximum output current is 100 mA.
“Active Low”: Switches to the L level (GND and short) during transmission. When an external bias
is applied while receiving is in progress, the signal switches to the H level. Voltage and current not
higher than DC 50 V and 100 mA respectively can be controlled.
O
1 INSTALLATION AND CONNECTION
1-6
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