Measurement-computing DaqBoard-ISA Manual do Utilizador descarregar pdf (Página 43)

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:

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:

Maximum Allowed “0” Voltage Level:

0.8V

Output Float Leakage Current:

10 µA

Note

: Specifications are subject to change without notice.

Specifications are continued on page A-3.

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