Description
The PCIe-DAS1602/16 is a multifunction measurement and control board designed for the PCI Express (PCIe) bus. The board provides 16 single-ended (SE) or eight differential (DIFF) input channels with 16-bit resolution, two 12-bit analog outputs, 32 DIO, and three 16-bit counters.
The PCIe-DAS1602/16 is a fully connector-compatible and software-compatible replacement for the Measurement Computing PCIM-DAS1602/16.
Signal Connections
One 37-pin connector provides access to the 16 SE/8 DIFF analog inputs, two analog outputs, four digital inputs, four digital outputs, and three counter/timer channels.
Analog Input
The PCIe-DAS1602/16 provides 16 SE or eight DIFF analog inputs. The input mode is switch-selectable to configure all channels as either SE or DIFF.
The board offers bipolar analog input ranges of ±10 V, ±5 V, ±2.5 V, and ±1.25 V, and unipolar ranges of 0 V to 10 V, 0 V to 5 V, 0 to 2.5 V, and 0 V to 1.25 V.
Input ranges are software-selectable, and polarity is switch-selectable.
Sample Rate
The PCIe-DAS1602/16 offers a single-channel sample rate of 100 kS/s divided by the number of channels being sampled.
Analog Output
Two 12-bit multiplying digital-to-analog converters (DACs) provide analog output on the PCIe-DAS1602/16. DAC0 and DAC1 each accept a precision 5 V or 10 V reference, which provides onboard D/A unipolar ranges of 0 V to 5 V and 0 V to 10 V, and bipolar ranges of ±5 V and ±10 V.
Other ranges between 0 V and 10 V are available when an external precision voltage reference is supplied to the DAC0 REF IN pin or DAC1 REF IN pin of the main connector.
Onboard reference voltage, user-supplied reference voltage, and polarity are all jumper-selectable.
Digital I/O
The 24 digital I/O connections available on the 40-pin DIO connector of the PCIe-DAS1602/16 are available as two eight-bit ports (ports A and B) and two four-bit ports (ports CH and CL). Each port can be configured independently as either input or output. These ports default to the input state (high impedance) on power up or reset.
The eight digital I/O connections available on the main 37-pin connector consist of two 4-bit ports. One port is permanently configured as input, and the other port is permanently configured as output.
Pull-Up/Pull-Down Configuration
The PCIe-DAS1602/16 includes jumpers to set the digital bits for pull-up (+5 V) or pull down (0 V) when the board is powered on and reset. Ports A, B, CH, and CL are factory-configured for pull-up (+5 V).
Counter/Timer I/O
Each PCIe-DAS1602/16 offers three 16-bit down counters. Each counter accepts frequency inputs up to 10 MHz, and provides clock, gate, and output connections.
The frequency of the square wave used as a clock by the A/D pacer circuitry is jumper-selectable for 1 MHz (default), or 10 MHz. The internal pacer output driving the A/D converter is also available at pin 20 (CTR 3 Output) on the main 37-pin I/O connector.
Connect the counter clock to the onboard 10 MHz crystal oscillator, or leave unconnected for user input.
The A/D pacer clock trigger edge (rising or falling) that initiates the A/D conversions is jumper-selectable on the PCIe-DAS1602/16. The jumper is configured for rising edge by default.
Calibration
The PCIe-DAS1602/16 can be fully calibrated either at the factory or in the field using InstaCal.
Features
16 SE/8 DIFF analog input channels (switch-selectable)
16-bit resolution
Up to 100 kS/s sampling (100 kS/s max for any channel)
Two 12-bit analog outputs
32 digital I/O
Three 16-bit counters
Connector and software-compatible with the PCIM-DAS1602/16
Software
TracerDAQ® software included for acquiring and displaying data and generating signals
Universal Library includes support for Visual Studio® and Visual Studio® .NET, with examples for Visual C++®, Visual C#®, Visual Basic®,
and Visual Basic® .NET
Comprehensive drivers for DASYLab®
Supported by MATLAB® Data Acquisition Toolbox™
InstaCal software utility for installation, calibration, and test
ULx for NI LabVIEW™
Supported Operating Systems: Windows 7/Vista/XP SP2, 32-bit or 64-bit