User's Manual

Technical Specifications
External Connectors
Main Connector
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8 DPORT4 RTS Request to Send TTL Input Gates the flow of receive data from the radio
to the user on or off. An internal 10K pull-
down enables data receive if this signal is
left unconnected. In normal operation, this
signal should be asserted:
(0V) – Receive data (RxD) enabled
(3.3V) – Receive data (RxD) disabled
9 DPORT2 DSR Data Set Ready TTL
Output
Used to control transmit flow from the user
to the radio:
(0V) 1 – Receive buffer has data to transfer;
(3.3V) 0 – Receive buffer is empty
10 RES CONT RESCONT Reset Control TTL Input Reset the radio by shortening this pin to the
ground.
11 TTLO1 TTLOUT1 TTL Output Line
1
TTL
Output
Reserve line
12 TTLO2 TTLOUT2 TTL Output Line
2
TTL
Output
Reserve line
13 GND GND Ground - Signal and Chassis Ground
14 TTLI2 TTLIN TTL Input line TTL Input An internal 100K pull-up resistor is applied.
15 VCC36 PWR Power Supply External Regulated positive 4.0V DC from ext.
Power Supply.
16 VCC36 PWR Power Supply External Regulated positive 4.0V DC from ext.
Power Supply.
PIN
#
Signal
Designator
Signal name Description I/O Comments