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9XTend™
OEM
RF
Module
–
Product
Manual
v1.2.4
©
2005
MaxStream,
Inc.
Confidential
&
Proprietary
48
MaxStream RS-232/485 Interface Board
B.1a. Config (Configuration) Switch
Figure
B.1.
Front
View
B.1b. I/O LEDs
The I/O LED indicators visualize diagnostic status information. The
LEDs indicate module activity as follows:
Yellow (top LED) = Serial Data Out (to host)
Green (middle) = Serial Data In (from host)
Red (bottom) = Power/TX Indicator (Red light is on when
powered; it pulses on/off briefly during RF transmission.)
B.1c. DB-9 Serial Port
Standard female DB-9 (RS-232) DCE connector – This connector
can be also used for RS-485 and RS-422 connections.
B.1d. RSSI LEDs
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 module’s receiver sensitivity.
3 LEDs on =
Very Strong Signal (> 30 dB fade margin)
2 LEDs on =
Strong Signal (> 20 dB fade margin)
1 LED on =
Moderate Signal (> 10 dB fade margin)
0 LED on =
Weak Signal (< 10 dB fade margin)
B.1e. Power Connector
7-28 VDC Power Connector (Center positive, 5.5/2.1mm)
Note: The XTIB-R interface board can accept voltages as low as 5V.
Contact MaxStream support to enable this option.
B.2a. DIP Switch
The Configuration Switch provides an alternate method for
entering into Command Mode. To enter Command Mode at
the modem’s default RF data rate, hold the Configuration
Switch down for two seconds.
B.1d.
RSSI
LEDs
B.1e.
Power
Connector
B.1c.
DB
‐
9
Serial
Port
B.1b.
I/O
LEDs
B.1a.
Config
Switch
Figure
B.2.
Back
View
Refer to the figure below for DIP Switch settings.
DIP Switch automatically configures the XTend Module to operate
in different modes during the power-on sequence. Each time the
module assembly (interface board + XTend Module) is powered-
on, intelligence on the XTIB-R interface board programs the
attached module according to the positions of the DIP Switch.
B.2a.
DIP
Switch
Figure
B.3.
MaxStream
XTIB
‐
R
(RS
‐
232/485)
Interface
Board
DIP
Switch
Settings
Table
B.2.
[next
page]
summaries
configurations
triggered
by
the
DIP
Switch.