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Products   >   I/O Expansion Modules   >   Communications Modules   >   Janus-MM Wireless & Dual CAN Module
FEATURES
2-in-1 CAN + Wireless/GPS board
Dual CAN 2.0B interface
Philips SJA1000T controllers
Channel-to-channel and channel-to-system isolation
Socket for GPS receiver module
1 pulse per second precision output from GPS receiver
Connector provided to supply backup power for the GPS almanac
0Ω jumper-bypass resistors for ruggedized applications
PC/104 form factor
-40C to +85C operation
ACCESSORIES
Customers who use this product also use:
6970005
1-port DB9 Serial Cable

This product can be customized and ruggedized. Click here for more information.
ONLINE SUPPORT
See Janus-MM Wireless & Dual CAN Module Technical Resources
Request Product information
Request Technical Support
DOWNLOADS
Janus-MM Datasheet
(.pdf, 304.9 kb)
Janus-MM User Manual
(.pdf, 918.4 kb)
Basic CAN Driver User Manual
(.pdf, 664.4 kb)
Basic CAN Linux Driver for Janus
(.gz, 22.7 kb)
Basic CAN Windows XP Driver for Janus
(.zip, 1.7 MB)
Basic CAN Linux Driver App Source for Janus
(.zip, 21.0 kb)

Janus-MM Wireless & Dual CAN Module

Dual CAN Ports, Carrier for Wireless and GPS Modules

Janus-MM Janus-MM
Janus-MM Dual CAN PC/104 board
click for a larger image
Janus-MM with GPS and Wireless
modem modules installed
click for a larger image
Description
System Block Diagram
GPS Add-on Module
GPS Antenna & Transition Cable
I/O Connectors
Specifications
Get an online quote
Customize Me

Description

JANUS-MM combines dual CAN interfaces with sockets for GPS communications to create a complete I/O subsystem for automotive and vehicle tracking applications. The dual CAN ports use the Philips SJA1000T CAN controller and 82C251 transceiver, for full CAN2.0B functionality. Each port is independently isolated from the system to eliminate sensitivity to noise and ground shifts in the network. Jumper options include slew rate control, transceiver power source (on-board or loop power), address, and interrupt settings. Both memory and I/O addressing are supported. For ruggedized applications, 0Ω jumper-bypass resistors can be installed in any configuration.

JANUS-MM supports the Condor C2626 GPS receiver from Trimble Navigation. A connector is provided to supply backup power for the GPS almanac. A built-in dual UART circuit provides the necessary interface to the modules. The add-on module is available pre-installed or separately based on your desired configuration. See below for more information.

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System Block Diagram


Janus-MM Block Diagram

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GPS Add-on Module

Janus-MM supports the addition of a GPS module for location identification and wireless communications. One GPS module can be installed on a single Janus-MM board. The module can be ordered pre-installed on the board. Antenna and transition cables are available to connect between the module and the enclosure wall.

Condor C2626 GPS


  • L1 frequency, 23 channel receiver
  • NMEA protocol
  • Up to 5Hz location update rate
  • 1 pulse per sec precision output
  • Battery backup option for faster warm start capability
  • SMB antenna connector
  • -40C to +85C operation

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GPS Antenna & Transition Cable

Diamond Systems offers antennae and transition cables for the GPS module used on the Janus-MM board orderable separately.

GPS Antenna & Transition Cable

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I/O Connectors

Each CAN port uses its own 10-pin connector that conforms to the CANopen standard:

No Connect 1 2 CAN_GND, Optional
CAN_L 3 4 CAN_H
CAN_GND 5 6 No Connect
No Connect 7 8 CAN_PWR, Optional
No Connect 9 10 No Connect


Janus-MM provides access to the second on-board serial port in TTL format for use with external devices that may need this signaling level. If this connector is used, then neither the second GPS channel or SocketModem module can be used.

1 DTR
2 DCD
3 CTS
4 DSR
5 RING
6 TXD
7 RXD
8 RTS
9 +5VDC
10 Ground


A 4-pin connector provides access to the 1 pulse per second output from an installed GPS module and allows external backup power for the GPS almanac.

1 Ground
2 GPS Backup Power
3 GPS PPS Output
4 Ground

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Specifications

CAN Circuit
CAN channels 2, 2.0B
Controller Phillips SJA1000T
Transceiver Phillips 82C251
Isolation 1500V channel-to-channel
Transceiver power 5V, on-board or loop
Clock rate 16MHz
Data rate 1Mbps
Bus interface Memory or I/O
GPS Module
Manufacturer Trimble Navigation
Model Condor C2626 23 channel receiver
General
Dimensions 3.55" x 3.775"
PC/104 bus 16-bit stackthrough ISA bus
Power supply +5VDC 5%
Operating temperature -40C to +85C
MTBF JNMM-COMBO-XT: 128,028 hours
RoHS Compliant

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Get an online quote

 
Janus-MM Wireless & Dual CAN Module
available models:
JNMM-COMBO-XT
Dual CAN + Carrier PC/104 Module
JNMM-GPS26
Janus-MM with Condor C2626 GPS module installed, dual CAN
JNMM-CAN2-XT
Janus-MM Dual CAN ports only, extended temp.; Minimum Order Quantity of 50
6970005
Transition cable for Condor C2626 GPS module
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