Appendix a - specifications, isa-type daqboards, Appendix a, Specifications, isa-type daqboards – Measurement Computing DaqBoard-ISA User Manual
Page 43: Specifications, isa-type daqboards a, General, A/d specifications, Analog inputs, Triggering, Sequencer, Analog outputs
Appendix A – Specifications, ISA-Type DaqBoards
02-14-02
A-1
Specifications, ISA-Type DaqBoards A
General
Power Consumption
DaqBoard/200A: 1.7A @ 5 VDC
DaqBoard/216A: 1.34A @ 5 VDC
Operating Temperature: 0° to 50°C
Storage Temperature: 0° to 70°C
Humidity: 0 to 95% RH, non-condensing
Dimensions
DaqBoard/200A and DaqBoard/216A:
340 mm W x 117 mm H (13.125” x 4.5”)
A/D Specifications
Type: Successive approximation
Resolution
DaqBoard/200A and DaqBoard/216A: 16 bit
Conversion Time: 8 µs
Monotonicity: No missing codes
Linearity: ±1 bit
Zero Drift: ±10 ppm/°C max
Gain Drift: ±30 ppm/°C max
Sample & Hold Amplifier
Acquisition Time: 2 µs
Aperture Uncertainty: 100 ps
Analog Inputs
for DaqBoard/200A and DaqBoard/216A
Channels: 16 single-ended, 8 differential, expandable up
to 256 differential; single-ended/differential operation is
software programmable
Connector: DB37 male, P1
Resolution: 16 bits
Accuracy: ±0.025% FS
Ranges
Unipolar/bipolar operation is sequencer selectable on a
per-channel basis
Unipolar:
0 to +10V, 0 to +5V,0 to +2.5V, 0 to +1.25V
Bipolar:
±5V, ±2.5V, ±1.25V, ±0.625V
Maximum Overvoltage: 30 VDC
Input Current
Differential:
150 pA typ; 0.2 µA max
Single-Ended: 250 pA typ; 0.4 µA max
Input Impedance: 100M Ohm in parallel with 100 pF
Gain Temp. Coefficient: 3 ppm/°C typ
Offset Temp. Coefficient: 12 µV/°C max
Triggering
Analog Trigger
Programmable Level Range: 0 to ±5V
Trigger to A/D Latency: 10 µs max
Digital Trigger
Logic Level Range: 0.8V low/2.2V high
Trigger to A/D Latency: 10 µs max
Software Trigger
Trigger to A/D Latency: Dependent on PC speed
Pre-Trigger: Up to 65,536 scans
Sequencer
Randomly programmable for channel and gain, as well as
for unipolar/bipolar ranges
Depth: 512 location
Channel-to-Channel Rate: 10 µs/channel, fixed
Maximum Repeat Rate: 100 kHz
Minimum Repeat Rate: 12 hours
Expansion Channel Sample Rate:
Same as on-board channels, 10 µs/channel
Analog Outputs
Channels: 2
Connector: DB37 male, mates with P1
Resolution: 12 bits
FIFO Depth: 4 Kword (2K per channel)
Voltage Ranges: 0 to 5 VDC with built-in reference;
0 to ±10 VDC with external reference
Maximum Output Current: 10 mA
Maximum Update Rate: 2 channels, 500 Ksamples/s;
1 channel, 1 Msamples/s
Memory: 2K words/channel on a per-channel basis
Maximum Analog Bandwidth: 500 kHz
General Purpose Digital I/O
for DaqBoard/200A
Number of Lines: 24 I/O lines, expandable up to 192
Connector: DB37 male, P2 (on-board 40-pin DIN is
externally accessible via DB37 with optional CA-60)
Device: 82C55
Output Voltage Levels
Minimum “1” Voltage: 3.0 @ 2.5 mA sourcing
Maximum “0” Voltage: 0.4 @ 2.5 mA sinking
Output Current
Maximum Source Current: 2.5 mA
Maximum Sink Current: -2.5 mA
Input Voltage Levels
Minimum Required “1” Voltage Level: 2V
Maximum Allowed “0” Voltage Level: 0.8V
Output Float Leakage Current: 10 µA