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Hopper FD 915 A
Hopper DS 915 S Hopper DS 915 A Hopper DS 2.4 S Hopper DS 2.4 A Hopper FD 915 A Hopper FD 2.4 A

 

Hopper FD 915A Asynchronous RS232 Wireless Modem

 

Data
User data rates Up to 19200 baud half or full duplex; 38400 baud half duplex in DSSS mode
Up to 9600 baud half or full duplex in FHSS mode
Baud-rate can be selected using a PC connected to the modem serial port. Any communications software package (e.g. Procomm) is suitable for this task.
Data formats 7 or 8 data bits, odd, even, no parity, 1 or 2 stop bit.
Networking options Point-to-point, point-to-multipoint in both DSSS and FHSS mode.
Multipoint-to-multipoint in DSSS mode.
Repeaters Modem can be configured as repeater to extend range and coverage in DSSS mode.
Packet structure Data is grouped into packets for radio transmission.
Addressing 255 unique addresses, 1 broadcast address, multicasting possible.
Security Unique password to prevent eavesdropping and unauthorized transmission in DSSS mode.
Error Control ARQ error control using CRC.
Buffering 509 byte internal buffer; 1018 bytes buffer configure as repeater in DSSS mode.

Data Interface
Signaling Standard RS-232
Connector DB-25 female with 4 - 40 thread screw locks.
Lines supported Tx, Rx, Gnd, CTS, RTS, DTR, DSR, DCD, RI
Indicators Multicolor LED: green = receiving, red = transmitting, yellow = idle. Power LED: green when modem has power

Configuration
Wire Interface Menu and AT command set

Transceiver
RF band 902-928 Hz ISM band
RF transmit power 27dBm (500mW)
Receiver Sensitivity -93 dBm
Center frequency User configurable over entire band using PC interface.
Antenna:
standard: 1/2 wavelength "rubber ducky" dipole antenna.
optional: high gain antenna. Please contact a Wi-LAN application engineer to discuss the permissible use of directional antennas with this product.

Direct Sequence Mode
Modulation Direct-sequence spread spectrum (DSSS), FCC part 15 and IC RSS-210 compliant.
Chip rate 2.5 Mchips/s
PN code length 63, 127, 255, or 511 chips.
Mainlobe 6 dB BW 3 MHz at 2.5 Mchips/s

Frequency Hopping Mode
Modulation Frequency hopping spread spectrum (FHSS), FCC part 15 and IC RSS-210 compliant.
Bit Rate 10, or 25kbps
NB 20 dB BW 300kHz
Hopping Patterns 64 quasi-orthogonal patterns based on a pseudorandom sequence

Mechanical
Dimensions 21.5 x 13.5 x 5.5 cm (8.5 x 5.25 x 2.25 inches)
Weight (approx.) 1.1 kg (2.4 lb.)
Case material Aluminum extrusion with black powder coat
Antenna length standard antenna 15.2 cm (6.0 inches)

Environmental
Temperature range -40°C to +70°C
Humidity 90%, non condensing, maximum.

Power
Supply voltage 8.5-14 V dc from Wi-LAN wall plug (supplied with all units)
Power input 2.1 mm female jack, center positive
Current demand 220 mA during idle/receive, 600 mA during transmit @12VDC

Warranty 1 year parts and labor

Certification FCC and Industry Canada Certified.

Licensing No further licensing required in countries providing unlicensed bands


* Specifications are subject to change without notice.

 

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Copyright © 1998 AIRLINX Communications, Inc.
Last modified: March 03, 1999