Microhard Systems 04P10 User Manual

MHX-920

OEM Industrial Wireless Modem

The MHX-920 is a long range - high speed 900MHz Frequency Hopping Spread Spectrum
Modem. The MHX-920’s rate can be optimized for long distance communication over
60 miles. MHX-920 radios offer the fastest communication over the longest distances.

Applications:

- SCADA (PLCs, Modbus, HART)

- Telemetry

- GPS Vehicle Data/Tracking, DGPS

- Electric, Oil, & Gas Utilities/Metering

- Display Signs

- Traffic Control, Loop detectors

- Transparent low latency communication

If you thought our MHX-910 was good - you’ll

be amazed with the MHX-920. There are

many radios that make claims - just run our

radios side by side and see what happens.

The MHX-920 features robust, high speed, low latency, secure data communications. The MHX-920 has a full data
serial port and a separate diagnostics port for real-time diagnostics; which does not interfere with data communi­cations. MHX-920 offers excellent noise figure, superior interference rejection, very agile frequency synthesis,
digital modulation, and matched filter detection. The MHX-920 can be user optimized for speed and distance.

Features of the MHX-920

• Transparent, low latency link providing true 230 kbps continuous

throughput to support protocols such as MODBUS

• License-free communication in the 902 - 928 MHz ISM band

• Industrial Grade - extended temperature specification

• Supports point-to-point, point-to-multipoint, Store and Forward

Repeater, TDMA, Multimaster

• Maximum allowable transmit power, (1W)

• Low power consumption in Sleep Mode and High Voltage

Option

• 32-bit CRC, selectable forward error correction with retransmit

MHX-920 HV Option

• Separate diagnostics port - transparent remote diagnosis and

online network control

• Backwards and Footprint Compatible with MHX-910 and

Spectra-910 radios

Rev 1.0

Preliminary Specifications subject to change without Notice

MHX-920

Specifications (preliminary)

Frequency

Spreading Method

Band Segments

Hopping Patterns

Hopping Channels

Error Detection

Data Encryption

Range

Sensitivity

Output Power

System Gain

Data Port Inteface

Serial Baud Rate

902 - 928 MHz

Frequency Hopping

16 user selectable

128 user selectable

50 to 128 user selectable

32 bit CRC, retransmit on error

Dynamic Key Substitution

+60 miles (line of sight)

-108 dBm

1mW, 100mW to 1W (30dBm)

140dB

RS-232/RS485/RS422 TTL or
Drivers Level

300bps to 230.4kbps

Core Voltage

IO voltage
(user selectable)

Current (mA)

Transmit
Receive
Idle
Sleep

Antenna Connector

Environment

Weight

Dimensions

Approvals

4VDC to 5.5VDC, 7VDC to
40VDC(See option 100)

3.3VDC to 5.5VDC, RS232/485/
422 Levels(See option 100)

4 VDC 12 VDC 30 VDC

(High Voltage Option)
1200 600 220
220 95 40
60 20 8
1 1 1

MCX, Reverse polarity SMA
(See option 110)

-40 °C to +75 °C

Approx. 80 grams

Approx. 3.5” x 2.1” x 0.7”

FCC Part 15.247, pending
IC RSS210, pending

Order Options

Operating Modes

Signals Interface

Diagnostics

Rejection

Point-to-Point, Point-to-Multipoint,
Store&Forward Repeater, TDMA,
Multimaster, Peer to Peer, Trans­parent

RxD1, TxD1, RTS, CTS, DCD,
DSR, DTR, RxD2, TxD2,
RSSI1,RSSI2,RSSI3,
Tx LEDs, Rx LEDS,
Reset, Config, Wake-up,
RSmode, User Analog Input

Forward & Reflected Power,
VSWR, Current, Battery voltage,
Temperature, RSSI, Real-time
event logging and remote diag­nostics

Excellent Strong Signal Interfer­ence & Rejection Characteristics

Contact Information

Microhard Systems Inc.
#110, 1144-29th Ave N.E.
Calgary, AB, Canada T2E 7P1

email: [e-mail]
Tel: [phone]

Fax: [phone]

Option 100

Option 110

Copyright 2003 Microhard Systems Inc.
Specifications subject to change without notice.

HV OPTION - High Input voltage
(7V to 40V) with optional RS232/
RS485/RS422 Drivers

Reverse Polarity SMA Connector

Microhard
Systems Inc.

www.microhardcorp.com

TM

Rev 1.0

Preliminary Specifications subject to change without Notice