Reference Manual

Table Of Contents
8. FGR3 Wireless Data Radios Pinouts
FGR3
User-Reference Manual
LUM0110AA Rev Jan-2019 Page 115 of 143 Copyright © 2019FreeWave
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8.4. RF Board Level Pinout
The board-level radios are available in both TTL and RS232 versions. The TTL version uses
reverse polarity from standard RS232 at 0 to 5 Volt levels. All pin descriptions and pin numbering
are the same as the RS232 version. The RS232 version uses 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.
l Pin 1: B+ Power input.
l Pin 2: Interrupt (INT) Input A 0 Volt level on this pin switches the radio into Setup mode.
l Pin 1 on the board-level radio is the pin farthest from the three LEDs and pin 10 is closest to
the LEDs.
Figure 28: FGR3 Pin Layout
RF Board Level Pinout
Pin Assignment Signal
ACS3610xx
Cable Color
1 B+ input Power Red
2 Interrupt (temporarily ground to invoke menu) Input Brown
3 Data Terminal Ready (DTR) Input Orange
4 Ground Black
5 Transmit Data (TXD) Output Yellow
6 Ground Black
7 Receive Data (RXD) Input Green
8 Carrier Detect (DCD) Output Blue
9 Request to Send (RTS) Input Violet (purple)
10 Clear to Send (CTS) Output Gray