Hardware interfaces
XLR PRO Radio Frequency (RF) Modem User Guide
11
Hardware interfaces
XLR PRO offers the following hardware interfaces.
•
Serial (RF45) port:
The XLR PRO serial port (RJ45) supports RS-232 or RS-485/422 protocols.
•
USB (mini USB):
The mini USB port is used for configuration and basic serial communication with a host PC. XLR
PRO can act as a USB client only and requires drivers (Windows only) to operate. The XLR PRO USB driver is
available here:
www.digi.com/support/productdetail?pid=5603&type=drivers
•
Ethernet:
The Ethernet interface is 10/100 Base-T with a two-port Ethernet switch. XLR PRO does not support
Power over Ethernet (PoE) and must be externally powered through the DC power jack.
LEDs
The following table describes XLR PRO LED behavior. (For a diagram of the XLR PRO LEDS, see
Reset button
You can use the
Reset
button to reset the XLR PRO and to restore factory default settings.
To reset the XLR PRO:
1
Hold down the
Reset
button for up to five seconds. The serial data in and serial data out LEDs flash three times to
indicate that five seconds have passed.
2
Release the
Reset
button. The XLR PRO resets.
Action
LED
Status
Description
Startup
Power
Solid
Power LED glows solid red.
Link margin
indicators (RSSI)
Solid
All of the link margin indicator LEDs show green for one
second.
Serial Data In
(green)
Solid
On initial power on, if the green serial data in LED shows solid
for three seconds, the XLR PRO is in serial mode.
Serial Data Out
(yellow)
Solid
On initial power on, if the yellow serial data out LED shows
solid for three seconds, the XLR PRO is in IP socket mode.
Data
transmissions
Power
Solid
While power is on, the power LED shows solid red.
Link margin
indicators (RSSI)
Solid
The link margin indicator LEDs illuminate for four seconds to
show the signal strength of the last valid RF packet received.
3 LEDs = Very strong signal (> 30 dB fade margin)
2 LEDs = Strong signal (>20 dB fade margin)
1 LED = Moderate signal (>10 dB fade margin)
0 LED = Weak signal (<10 dB fade margin)
Serial Data In
(green)
Flashing
Serial data in LED shows flashing when serial data is being
transmitted.
Serial Data Out
(yellow)
Flashing
Serial data out LED shows flashing when serial data is being
received.