Call us: +44 (0)1634 300900 | E-mail:

Diamond Point International

Diamond Systems Opal-MM-1616 - Opto In + Relay Out PC/104 Module

16 Channel Optoisolated Inputs & 16 Relay Outputs


Opal-MM-1616 is a PC/104 format digital I/O module designed for industrial applications requiring isolation between the computer and the external signals it is monitoring and controlling.

The Opal-MM-1616 features 16 optoisolated digital inputs and 16 relay outputs. Each input has an input range of 0-30VDC. Opal-MM-1616 can be configured to generate an interrupt when any input changes state. Either or both banks of 8 inputs can be configured for interrupt operation. One 34-pin I/O header is used for the optoisolated inputs. The 16 relay outputs are SPDT format (form C). Each relay has 3 contacts: Common, Normally Open, and Normally Closed. For safety and reliability, all relays are at their power-off state at power-up or system reset. Each relay can switch both AC and DC voltages. Two 26-pin I/O headers are used for the relay outputs with 8 relays on each pin header. The relays have long lifetime (10,000,000 operations) and quick actuation time (5ms max operate and release, break before make). Diamond Systems' Universal Driver software provides drivers and example code for use with the Opal-MM-1616. The software provides support for interrupts and enables you to integrate you own code that is called when an interrupt occurs.

Signal Isolation

Opal-MM-1616 provides isolation on its input and output lines. The board will withstand up to 500V DC or AC difference in potential between the I/O lines and the rest of the board's circuitry. Each input and output channel on Opal-MM-1616 is completely independent and does not share any signal trace with any other channel. Therefore, every channel is isolated from every other channel.


Digital I/O/Counter/Timers

I/Os16 unidirectional optoisolated inputs
16 relay outputs
InputsInput capacity: 30VDC with current limiting resistors
Input impedance: 8k ohms
Logic levels
• Logic 0: 0 - 1.5VDC
• Logic 1: 3 - 30VDC
Programmability: Programmable edge detection with interrupts
OutputsRelay contacts
• SPDT (Form C) contacts
• Break before make
Current capacity: 2A
Switching capacity
• 30VDC at 2A
• 125VAC at 0.1A resistive
Maximum switching capacity: 30W (DC)
Contact resistance: 50mohm max
Actuation time
• Operate: 5ms maximum
• Release: 5ms maximum
Relay lifetime 10,000,000 operations
Isolation500VDC or AC, input to board or board to output
Channel to channel isolation
All I/O
Connectors(s)Optoisolated inputs: 1 34-pin (2 x 17) header on .1" connector
Relay outputs: 2 26-pin (2 x 13) headers on .1" connecters

Mating Cables:
• C-34-18 for optoisolated inputs
• C-26-18 for relay outputs (quantity 2)


ExpansionStandard 16 bit PC/104 interface
ElectricalPower Input: +5VDC +/-5%
Consumption: 70mA typical, all relays off; additional 28mA per activated relay
MechanicalDimensions: 96mm x 90mm
Conformal CoatingOn request
Windows XP
Windows 7
Windows CE.Net
Contact us for others
APIUniversal Driver 7.0
TemperatureTemperature range (operation): -40ºC to +85ºC (-40ºF to +185ºF)
Temperature range (storage): -40ºC to +85ºC (-40ºF to +185ºF)
Humidity0-90% non-condensing
Weight3.4oz (96g)
Warranty1 Year

Ordering Details

BoardOPMM-1616-XT 16 Optoisolated Input & 16 Relay Output PC/104 Module
AccessoriesC-26-18 26-conductor 18" ribbon cable
C-34-18 34-conductor 18" ribbon cable
Order Online DSC Opal-MM-1616 - Order Online