Specifications; Analog Input - Measurement Computing USB-7202 User Manual

Specifications

All specifications are subject to change without notice.
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.

Analog input

Parameter
A/D converter type
Number of channels
Input configuration
Sampling method
Absolute maximum input voltage
Input impedance
Input ranges
Sampling rate
Throughput
Resolution
No missing codes
Crosstalk
Trigger source
Calibration
Note 1: Maximum throughput scanning to system memory is machine dependent.
Range
±10 V
±5 V
±2 V
±1 V
Range
±10 V
±5 V
±2 V
±1 V
Table 1. Analog input specifications
Conditions
CHx IN to GND
Software-selectable
Scan to system memory
BURSTIO scan to 32 k sample FIFO
Software paced
Scan to system memory (Note 1)
BURSTIO scan to 32 k Sample FIFO
Signal DC–25 kHz
Software-selectable
Table 2. Calibrated absolute accuracy
Accuracy (mV)
5.66
2.98
1.31
0.68
Table 3. Accuracy components - All values are (±)
% of Reading
0.04
0.04
0.04
0.04
19
Specification
16-bit successive approximation type
8 single-ended
Individual A/D per channel
Simultaneous
±15 V max
100 MΩ min
±10 V, ±5 V, ±2 V, ±1 V
0.6 S/s to 50 kS/s, software-selectable
20 S/s to 50 kS/s, software-selectable
500 S/s all channels, system-dependent
(100 kS/s) / (# of channels); maximum of
50 kS/s for any channel
(200 kS/s) / (# of channels), maximum of
50 kS/s for any channel
16 bits
15 bits
–80 dB
External digital: TRIG_IN
Cal factors stored in firmware. Cal factors
must be applied to data via application
software.
Gain error at FS (mV)
4.00
2.00
0.80
0.40
Chapter 4
Offset (mV)
1.66
0.98
0.51
0.28