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ProxLINK Wireless Modem
Specifications
Overview
ProxLink wirelessly interconnects devices with RS-232 interfaces. Any devices that are
interconnected through a standard RS-232 interface and cable at 19.2Kbps or lower can be
wirelessly connected with ProxLink. ProxLink is a wireless replacement for the RS-232
cable. ProxLink is resistant to interference and noise from other devices operating in the
902-928MHz ISM band. Multiple ProxLinks can be operated simultaneously in the same
facility. ProxLink key features include:
 | Wireless communication for standard RS-232 interfaces |
| Resistant to interference and noise from other devices operating in the band |
| Range up to 1000 ft. (300m) possible |
| Packetized interface offered for custom RS-232 interface protocol applications such as
multipoint RS-232 environments |
| Simultaneous operation of multiple ProxLinks |
| Multiple Antenna options to extend range and coverage |
| NEMA enclosures available for harsh environments |
ProxLink provides a simple and reliable wireless replacement for any three wire
asynchronous (RXD. TXD and GND) RS-232 link running at speeds up to 19.2Kbps. Using spread
spectrum technology, the ProxLink provides robust, interference resistant operation which
penetrates through walls and other obstructions.
ProxLink offers a working range of up to 1000 feet. The actual range may vary due to
differences in physical operating environments.
Spread spectrum technology allows use of these products without a FCC site license.
Proxim has certified these products for use as unlicensed spread spectrum devices with the
FCC.
The ProxLink supports three modes of operation:
| Pass-through mode. In pass-through mode the ProxLink unit transmits data as it is
received from its serial port and the receiving unit passes the data through its serial
port. This is a 'wire-replacement' mode and installation is 'plug and play'. |
| Broadcast mode. Allows one unit to broadcast its messages to multiple units
simultaneously. This capability is often used in simultaneously updating messages on
multiple number of signs. |
| Packetized Mode. In packetized mode the ProxLink may be dynamically controlled by an
external computer using Proxim's packetized command set. This command set includes
transmission, configuration and power management features. A common application is the
support of multipoint wireless RS-232 functions. |
Multiple Antenna options available. Some of them are:
| High gain omni directional antenna for extended coverage in all dimensions. |
| High gain directional antenna for extended range in a single direction. |
| Vehicle mount antenna for mobile applications. |
| Lightning arrestors for outdoor applications. |
| Optional mounting hardware and custom cable lengths for specialized mounting needs. |
In addition, ProxLink's multiple spread spectrum channels and robust CSMA/CA (Carrier
Sense Multiple Access with Collision Avoidance) protocol allows multiple radios to operate
simultaneously without interfering with each other.
Benefits
| Easy Installation
Plug-in and use wireless RS-232 features in minutes |
| No FCC Site Licensing Required
ISM band spread spectrum operation requires no FCC license |
| Reliable Communication
ProxLink spread spectrum technology is resistant to interference and noise |
| High Speed RS-232 Communications
Speeds up to 19.2Kbps available |
| Easy to Configure
Configurations can be easily modified and saved in EEPROM |
Applications |
Wireless Connected Devices |
Remote Data Collection |
RS-232 Terminals |
Real Time Inventory Control |
Bar Code Scanners and Readers |
Environmental Monitoring |
Personal Computers |
Security Systems |
Hand Held Data Terminals |
Remote Automated Manufacturing Processes |
Computer Controlled Robots, PLC and CNC Machine
Tools |
Remote Printing |
Printers |
Specifications
| Serial Interface |
| Asynchronous Data Rates |
1.2, 2.4, 4.8, 9.6, 19.25 Kbps |
| Data Format |
8NI, 7E1, 701 |
| In band flow control |
CTS, DSR, XON/XOFF |
| Connector |
9-pin female D connector |
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| Power |
| Source (regulated) |
9V |
| Transmit current |
350mA @ 9V |
| Typical current |
150mA |
|
| Packaging |
| Antenna |
5/8 wave with 3db gain |
| Package size (w/o antenna) |
4.0" x 6.5" x 0.75" |
| Weight (with antenna) |
12 ounces |
| LEDs |
Power, Carrier Detect, Receive Data |
|
| Environment |
| Temp. (operating/storage) |
-20C to +60C/-50 to +85C |
| Relative humidity |
20% to 90% (non-condensing) |
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| Software |
| Operating Modes |
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| Pass-through |
Transparent to application, off-line
configuration |
| Packetized |
ProxLink accepts real-time
configuration, message, &
status commands |
| Message Format Options |
Line length, delimiters, & input time-out |
|
| Network Parameters |
| Channel Options |
Radio channel and security
subchannel (16 bits) |
| Outgoing Messages |
Point-to-point or broadcast, or all |
| Packetized Mode Features |
Standby Mode |
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| Radio* |
Model PL |
Model PL2 |
| Power |
400mw (max) |
500mw (max) |
| Independent Channels |
4 |
3 |
| Range (typical)** |
up to 1000 ft. (300m) |
up to 1000 ft. (300m) |
| Frequency Band |
902-928MHz |
902-928MHz |
* Proxim's ProxLink radio modules are certified under the FCC's (Part
15) spread spectrum regulations allowing for their unlicensed use in the United States.
** Range will vary depending on a number of factors including the physical environment
between ProxLink units.
Power supplies other than the one provided may cause damage and will void the warranty.
Swivel antenna attached with a non-standard connector.
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