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760 Mhz Data Transceiver Users Manual 

LUM0000XX Rev A 

Version 1.0 

34 

The 760 MHZ Series transceivers are available in both TTL and RS232 versions. 

The TTL versions use reverse polarity from standard RS-232 at 0 to 5 Volt levels. All pin descriptions and 
pin numbering are the same as the RS232 version. The RS232 versions use standard RS232 polarity and 
voltage levels for all of the RS232 signal lines (DTR, Transmit Data, Receive Data, Carrier Detect, RTS, 
and Clear to Send) and TTL standard polarity and voltage level for the Interrupt pin. 

Pin 1: B+ Power input. 

Pin 2: Interrupt (INT) – Input – A 0 volt level on this pin will switch the radio into Setup mode. 

1 B+ 

input 

Red 

2 

Interrupt (temporarily ground to invoke menu) 

Brown 

3 

Data Terminal Ready (DTR) 

Orange 

4 Ground 

Black 

5 

Transmit Data (TXD) 

Yellow 

6 Ground 

Black 

7 

Receive Data (RXD) 

Green 

8 

Carrier Detect (DCD) 

Blue 

9 

Request to Send (RTS) 

Violet (purple) 

10 

Clear to Send (CTS) 

Gray 

 

Note:   Pin 1 on the board level transceiver is the pin farthest from the three LEDs and pin 10 is closest 

to the LEDs. 

For up-to-date troubleshooting information check the Support page at 

www.FreeWave.com

. 

FreeWave provides Technical Support, Monday through Friday, 8:00 AM to 5:00 PM, Mountain Time 
(GMT -7) Call us toll-free at 1-800-548-5616 or factory direct after hours at 303-444-3862 or email us 
at 

moreinfo@FreeWave.com