8x16 Switch Matrix Module
DM35MRM128HR

 

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Description

The DM35MRM128HR is a stackable switch matrix module. This module consists of an 8x16 array of single pole (form A) rhodium contact reed relays. Each relay can be individually closed to connect a single column to a single row, and a combination of relay closures can form any desired network of connections. This allows software to freely connect and disconnect any one I/O pin in the matrix to any number of other pins. By stacking or cabling together additional DM35MRM128HR modules, the 8x16 matrix can expand up to 8x512.

The switch matrix module features the NXP PCA9616 buffer to provide differential I2C communication. This buffer increases the allowable distance of use and reduces signal noise over the standard I2C protocol. These two factors make the DM35MRM128HR ideal for remotely controlled solutions.

To reduce hardware and software development time, the DM35MRM128HR can be combined with RTD's CM35I2C03HR. This provides the user with Operating System drivers and example programs that immediately demonstrate the functionality of the module

Applications

• Automated Testing Equipment
  

 

Technical Details

• PC/104 form factor
• PCIe/104 stackable bus structure
  • PCIe universal expansion bus (Type 1 or Type 2)
• Relay Matrix:
  • Designed with Form A contacts
  • 128 Crosspoint Matrix expandable to 4096
  • 16 columns expandable up to 512
  • 8 rows
• Differential I2C communication using NXP PCA9616
  • Support 1Mhz over 3 meters
  • Onboard jumper termination
• External power connector for cabled solution
  • 12V input
  • Reverse Polarity Protection
  • Input Voltage Transient Protection
• Relay I/O
  • Max Voltage: 100 V_DC, 100 V_AC
  • Max Current: 0.5A Per Channel (10 W Max)
  • Expected life:
    • Mechanical: 5x10⁸cycles
    • Electrical
      • 10V, 100mA: 10⁷ cycles
      • 20V, 500mA: 5x10⁶ cycles
      • 100V, 10mA: 5x10⁵ cycles
• Available in stackable, rugged enclosures
• Requires +12 VDC for operation

Connector Interface

• Stackable Buses
  • PCIe universal expansion bus (Type 1 or Type 2)
• External I/O Connectors
  • One 20-pin 0.1” double row socket for matrix rows
  • One 34-pin 0.1” Samtec Mini Mate® header for matrix columns
  • One 6-pin 0.1” Samtec Mini Mate® header for I2C
  • One terminal block for external power

Software

• C Libraries and example programs for Windows and Linux for DM35MRM128HR.
• Source code provided to give a starting point for developing custom applications
• Linux 5.x Kernal Driver for the CM35I2C03HR
• Source code provided for easy porting to other platforms, including RTOS
• Windows 10/11 Driver for the CM35I2C03HR

Physical Attributes

• Dimensions
  • Length (L): 3.775 inches (95.89 mm)
  • Width (W): 3.900 inches (99.06 mm)
  • Stand-off Height: 0.600 inches (15.24 mm)
• Weight: 0.25 lbs. (0.11 Kg)
• Standard Operating Temperature, 90% humidity non-condensing: -40 to +85°C
• Storage Temperature: -55 to +125°C
• MTBF: TBD
• Input Power Requirements: +12 VDC
• Typical Power Consumption: TBD

Documentation and Downloads

• Hardware Manual
• Software Downloads

Ordering Information

Part Number	Description	Value OEM
DM35MRM128HR	PCIe/104 8x16 Switch Matrix Module	$3245

 

 

RTD Embedded Technologies, Inc.
Designed and Made in the USA
sales@rtd.com  |  +1-814-234-8087