Call us: +44 (0)1634 300900 | E-mail: sales@dpie.com
Manufacturer: Diamond Systems Corporation
Diamond-MM has all the primary features you expect in a high-performance analog I/O board at a reduced price. The analog input circuit uses a 12-bit A/D converte and can be configured for single-ended or differential input wiring, as well as unipolar or bipolar input ranges. It also offers 10 different input ranges, so it can work with a wide variety of input signals. The maximum A/D conversion rate is approximately 2,000-20,000 per second using interrupts (depending on the operating system) or 100,000 per second using DMA.
Two optional analog outputs provide 12-bit resolution over a 0-5V or user-adjustable output range with 8mA drive current and 4uS settling time. The D/A can also be used as a digital attenuator for an analog signal fed into one of the reference inputs.
The board contains 8 digital inputs and 8 digital outputs. It has an on-board 82C54 counter/timer chip to control the A/D sampling rate and provide general purpose counting functions.
Diamond-MM is available in only one model now: with analog outputs and in industrial (-40ºC to +85ºC) operating temperature range.
Diamond-MM supports multiple analog input voltage ranges, including both unipolar (+ only) and bipolar (+ and) ranges. In addition, a gain amplifier circuit allows you to reduce the input range to handle smaller signals.
To get the best resolution, select the smallest input range that is large enough to cover the entire range of your input signals. You can also install a resistor to customize the range exactly to your requirements. Note: On any A/D converter, the input range is the same as the full-scale A/D range divided by the gain. On Diamond-MM, the full-scale A/D range is 0-5V in unipolar mode and ±5V in bipolar mode.
The full-scale analog output voltage range is unipolar and is preset to 0 - 5V. However, you can adjust this range anywhere from 0 - 4V to 0 - 10V by adjusting a potentiometer on the board. You can also supply an external reference signal to each DAC individually to select unique ranges for each output channel. If the reference signal is an AC waveform (e.g. an audio signal), then the DAC can be used as an attenuator (volume control).
To provide flexibility in integrating with your application, Diamond-MM offers several methods of controlling A/D conversions. An A/D conversion can be triggered in 3 different ways: software command, external trigger, or on-board pacer clock. After the conversion is done, the data can be transferred from the board to system memory in 3 ways: software command, interrupt routine, or DMA transfer. Different conversion rates require the use of different transfer methods:
Universal Driver software provides a high-level programming library for DMM and all of Diamond Systems’ I/O boards, as well as the data acquisition circuitry on our SBC boards. All the features described above are supported with easy-to-use function calls, resulting in a reduced learning curve and shortened application development time. The Universal Driver works with Linux, Windows 2000/XP, Windows CE and DOS. Application examples and projects are included for each function, each board, and each operating system to provide a quick starting point for learning and development.
Analog Inputs | |
| Number Of Outputs | 8 differential or 16 single-ended (user selectable) |
| Resolution | 12 bits (1/4096 of full scale) |
| Range | Bipolar ranges: ±10V, ±5V, ±2.5V, ±1V, ±0.5V, Custom Unipolar ranges: 0-10V, 0-5V, 0-2.5V, 0-1V, 0-.5V, Custom |
| Max Sample Rate | 100,000 samples/sec. max with interrupts |
| Input Bias Current | 50nA max |
| Maximum Input Voltage | ±10V for linear operation |
| Overvoltage Protection | ±35V on any analog input without damage |
| Input Impedance | 10^13 ohms |
| Conversion Trigger | Software trigger, internal pacer clock, or external TTL signal |
Analog Outputs | |
| Number Of Outputs | 2, 12-bit resolution |
| Resolution | 12 bits (1/4096 of full scale) |
| Current | ±8mA max per channel |
| Range | 0-5V, adjustable, or external reference input |
| Settling time | 4µS max to ±2/2 LSB |
| Relative accuracy | ±1 LSB |
| Nonlinearity | ±1 LSB, monotonic |
| Reset | All channels reset to 0V |
Digital I/O/Counter/Timers | |
| I/Os | 8 inputs, FCT/TTL compatible 8 outputs, FCT/TTL compatible |
| Inputs | Input voltage • Logic 0 : 0.0V min, 0.8V max • Logic 1 : 2.0V min, 5.0V max Input current: ±1µA max |
| Outputs | Output voltage • Logic 0 : 0.0V min, 0.33V max • Logic 1 : 3.8V min, 5.0V max Output current: ±4mA max per line |
| Counter/Timer(s) | A/D Pacer clock: 32-bit down counter (2 82C54 counters cascaded) Clock source: 10MHz on-board clock or external signal General purpose: 16-bit down counter (1 82C54 counter) Interrupt/DMA trigger: End of A/D conversion |
General | |
| Expansion | Standard 16 bit PC/104 interface |
| Electrical | Power Input: +5VDC ±10% Power Consumption: 165mA typical |
| Mechanical | Dimensions: 96mm x 90mm, standard PC/104 |
| Conformal Coating | On request |
| Software | DOS Linux Windows XP WES7 Windows 7 Windows CE.Net Contact us for others |
| API | Universal Driver 7.0 |
| Temperature | Temperature range (operation): -40ºC to +85ºC (-40ºF to +185ºF) Temperature range (storage): -40ºC to +85ºC (-40ºF to +185ºF) Note: Only one variant of this product is now available, which is the extended temperature DMM-XT |
| Humidity | 0-90% non-condensing |
| Weight | 3.3 oz/93g |
| MTBF | 372,809 hours |
| Warranty | 1 Year |
| RoHS | Compliant |
Ordering Details | |
| Board | DMM-XT Diamond-MM 16-ch 12-bit A/D + 2-ch 12-bit D/A Extended Temperature |
| Accessories | C-50-18 50-conductor 18" ribbon cable |