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The DMM-16R-AT features top performance and flexibility for a mid-range price. It has 16 single-ended / 8 differential analog voltage inputs with both unipolar and bipolar input ranges, programmable gain, and a maximum sampling rate of 100KHz. The 4 D/A channels and 16 digital I/O lines provide additional real-world control and monitoring capability.
The full −40 to +85°C industrial temperature operation ensures reliable and accurate performance in any embedded system application. A fully-featured software library with example programs and a graphical user interface completes the solution to make the DMM-16R-AT a solid choice for PC/104 embedded systems requiring analog I/O.
DMM-16R-AT is fully compatible with the original DMM-16-AT analog I/O module and can serve as a drop-in replacement offering reduced cost and enhanced digital I/O features. The mechanical design, connector type and pinout, and software interface are all identical the original board, eliminating any mechanical or software engineering efforts.
| Technical specifications | |
|
Analog Inputs |
|
|---|---|
| Number of inputs | 8 differential or 16 single-ended (user selectable) |
| A/D resolution | 16 bits (1/65,536 of full scale) |
| Bipolar ranges | ±10V, ±5V, ±2.5V, ±1.25V, ±0.625V |
| Unipolar ranges | 0-10V, 0-5V, 0-2.5V, 0-1.25V |
| Input bias current | 3nA max |
| Overvoltage protection | ±35V on any analog input without damage |
| Input Impedance | 10^13 ohms |
| Nonlinearity | ±3LSB, no missing codes |
| Conversion rate | 100,000 samples/sec. max with interrupts |
| Conversion trigger | Software trigger, internal pacer clock, or external TTL signal |
| Input FIFO | 512 samples, 256-sample interupt threshold |
| A/D interrupt |
End of A/D conversion End of A/D scan FIFO half-full |
| Calibration | A/D and D/A circuits calibrated under software control using on-board precision references and EEPROM storage |
|
Analog Outputs |
|
| Number of outputs | 4 |
| D/A resolution | 12 bits (1/4096 of full scale) |
| Output ranges |
Fixed: ±5, 0-5V Programmable: Anywhere between 0V and 10V in 1mV increments Reset: All channels reset to mid-scale (0V for bipolar ranges) |
| Output current | ±5mA max per channel |
| Settling time | 6µS max to 0.01% |
| Relative accuracy | ±1 LSB |
| Nonlinearity | ±1 LSB, monotonic |
|
Digital I/O |
|
| Number of lines | 16, organized as 2 8-bit ports |
| Logic Levels | 3.3V / 5V jumper selectable |
| Termination | 10K ohm pull-up / pull-down resistors, jumper selectable |
| Input voltage | Vlogic = 5V |
| Logic 0 | 1.65V max |
| Logic 1 | 3.35V min |
| Output voltage | Vlogic = 5V |
| Logic 0 | 0.44V max, Iout = 24mA |
| Logic 1 | 3.76V min, Iout = -24mA |
| Input voltage | Vlogic = 3.3V |
| Logic 0 | 0.80V max |
| Logic 1 | 2.00V min |
| Output voltage | Vlogic = 3.3V |
| Logic 0 | 0.44V max, Iout = 24mA |
| Logic 1 | 2.25V min, Iout = -24mA |
|
Counter/Timers |
|
| A/D Timer clock | 32-bit down counter |
| General purpose | 16-bit down counter |
| Clock source | 10MHz on-board clock or external signal |
|
General |
|
| Bus Interface | ISA (5V) bus |
| Power supply | +5V ±5% @ 390mA typical |
| Weight | 64g / 2.25oz |
|
Environmental and physical specifications |
|
| Operating Temperature | 40°C to +85°C tested and guaranteed |
| RoHS | Compliant |
| Model | Description |
| DMM-16R-AT | Diamond-MM Autocalibrating 16-ch 16-bit A/D +4-ch 12-bit D/A Extended Temp. |
| C-50-18 | 50-conductor .1" pitch 18" ribbon cable Data Acquisition |
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