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Number
5
Configuration switch
The Configuration switch provides an alternate method for entering Command mode. To enter Command mode at
the device's default RF data rate, hold the Configuration switch down for two seconds.
I/O and Power LEDs
The LEDS visualize status information and indicate device activity as follows:
LED
color
Yellow
Green
Red
Serial port
The serial port is a standard female DB-9 (RS-232) connector. You can also use this connector for RS-485 and RS-422
connections.
RSSI LEDs
The RSSI LEDs indicate the amount of fade margin present in an active wireless link. Fade margin is the difference
between the incoming signal strength and the device's receiver sensitivity. The LED indications are as follows:
Number of LEDs on
3
2
1
0
Power connector
7-28 VDC power connector (center positive, 5.5/2.1 mm). The XTIB-R interface board can accept voltages as low as 5 V.
Contact Digi Technical Support to enable this option.
XTend RF Module User Guide
Description
Power connector
LED
location
Indication
Top
Serial data out (to the host)
Middle
Serial data in (from the host)
Bottom
Power/TX indicator (the red light is on when powered, it pulses on and off briefly
during RF transmission)
Indicates
Very strong signal (> 30 dB fade margin)
Strong signal (> 20 dB fade margin)
Moderate signal (> 10 dB fade margin)
Weak signal (< 10 dB fade margin)
XTIB-R RS-232/485 Interface Board
89
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