Quick Start Guide
XTend-PKG-R™ RS-232/485 RF Modem
Range Test Setup
Range Test Procedure
Optional Configurations
Create a Long Range Wireless Link In Minutes.
© 2005 MaxStream, Inc. All rights reserved.
WARNING: When operating with 1 Watt power output, transmitting in close
proximity of other RF modems can damage modem front-ends. Observe a
minimum separation distance of 2' (0.6 m) between RF modems.
This Quick Start Guide provides OEMs and integrators with an introduction to some of
the RF modem's most important features. This guide provides step-by-step
instruction on how to setup a wireless link and test the modem's ability to transport
data over varying ranges and conditions.
Range Test Setup
Requirements for Range Test
2 XTend RF Modems
Accessories (Loopback adapter, RS-232 cable, 2 RPSMA antennas, 2 power supplies)
1 PC (Windows 98 SE, 2000 or XP) loaded with X-CTU Software
Install X-CTU Software:
Double-click "setup_X-CTU.exe" file and follow prompts of the installation screens.
This file is located on the MaxStream CD and also on the following web page:
The X-CTU software interface is divided into the four following tabs:
• PC Settings - Setup PC serial com ports to interface with the RF modem
• Range Test - Test RF modem's range under varying conditions
• Terminal - Read/Set RF modem parameters and monitor data communications
• Modem Configuration - Read/Set RF modem parameters
Hardware Setup
XTend RF Modems will be referred to as "Radio1" and "Radio2".
1. Set both Radio DIP Switches to RS-232, point-to-point modes.
[Switches 1 and 5 are ON (up), and the remaining 4 switches
are OFF (down)].
O 1 2 3 4 5 6
2. Connect the included RS-232 cable to the female DB-9 connector of
Radio1 and the male DB-9 connector of the PC.
3. Attach the serial loopback adapter to the female DB-9 connector of Radio2.
(The serial loopback adapter configures Radio2 to function as a repeater by
looping data back into the module for retransmission. [Figure 1])
4. Attach RPSMA antennas to each RF modem.
5. Power Radio1 & Radio2 through their respective power connectors.
Figure 1. Hardware Setup
Host PC
RS-232 cable
RPSMA antennas
(w/ loopback adapter)
Range Test Procedure
Use the "PC Settings" and "Range Test" tabs of the X-CTU Software to:
Setup a PC Serial Com Port for communications with the
XTend RF Modem [step 2 of "Range Test"].
Determine RF modem's range [steps 1-8 of "Range Test"].
Range Test
Launch the X-CTU Software: (Start --> Programs --> MaxStream --> X-CTU)
Under the "PC Settings" tab [Figure 2], select the PC serial com port
from the dropdown list that will be used to connect to Radio1.
Select the baud rate that matches the I/O interface rate (serial data rate)
of Radio1. Use default values for remaining fields [Figure 2].
Select the "Range Test" tab [Figure 3].
(Optional) Check the box in the "RSSI" section to enable its display.
("Loopback" option is automatically selected.)
Click the "Start" button to begin the range test.
Move Radio2 (with loopback adapter) away from Radio1 to determine the
maximum range of the wireless link.
Figure 2. PC Se�ings tab
PC Com Port
Default Values
Default RF data rate is 9600 baud
Other Default Values:
Flow Control =
Data Bits
Stop Bits
Figure 3 Range T est tab
RSSI check box
RSSI stands for "Received Signal Strength Indicator".
Loopback option
Start/(Stop) button
(Packet Information)
Optional Configurations
Out-of-box, the XTend-PKG-R RF Modem is configured to provide immediate wireless
links between devices. The modem's default configuration supports a wide range of
RF communications.
If the RF Modem must be configured to support specific needs of a data system,
several programming options are available.
Using the MaxStream RF Modem DIP Switch
The DIP switch allows users to configure the following RF modem settings.
Figure 4. DIP Switch Se�ings (Se�ings applied only when powering on)
2 3 4 5 6
TX/RX Mode
Serial Interface
Switches 1 & 2
Switches 5 & 6
(Optional) Switches 3 & 4
= RS-232
= Point-to-Point
= 2-wire RS-485
2-wire RS-485
4-wire RS-485/422
= None
= Restore Defaults
= not used
= User Defined
= ON (up)
= OFF (down)
Restoring Modem Defaults
If the XTend Modem
is not responding or
cannot enter into
Command Mode, try
restoring the modem
to its original default
parameter values.
To Restore Defaults (DIP Switch Method):
1. Set switches 1 & 2 of the DIP Switch to
their ON (up) positions and the remaining four
switches to their OFF (down) positions.
2. Turn off, then on again, the power supplying the
RF modem.
Other Configuration Options
Using the DIP Switch to configure the modem is one of several ways to configure
modem parameters. Other programming options are available such as using the
X-CTU Software "Terminal" and "Modem Configuration" tabs. Binary programming
is also supported.
Refer to the XTend-PKG-R RF Modem product manual for more information about
the available configuration options.
Contact MaxStream
(Office hours are 8am – 5pm U.S. Mountain Standard Time)
Phone: (801) 765-9885, Live Chat: www.maxstream.net, E-Mail: rf-xperts@maxstream.net