Chapter 4 Specifications; Analog Input - Measurement Computing usb1608fs 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
Gain queue
Resolution
No missing codes
Crosstalk
CAL output
CAL output accuracy (Note 2)
CAL current
Trigger source
Maximum throughput when scanning in hardware paced mode is machine dependent.
Note 1:
Actual values used for calibration are measured and stored in EEPROM.
Note 2:
Range
±10 V
±5 V
±2 V
±1 V
Table 1. Analog input specifications
Condition
CHx IN to GND
Software-selectable
Scan to PC memory
Burst scan to 32 k sample FIFO
Software paced
Hardware paced (Note 1)
BURSTIO ≤ 32,768 total samples
(uses onboard FIFO)
Signal DC to 25 kHz
User calibration source
Software-selectable
Table 2. Calibrated absolute accuracy
Accuracy (mV)
5.66
2.98
1.31
0.68
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
(100 kS/s) / (# of channels),
50 kS/s max for any channel
(200 kS/s) / (# of channels),
50 kS/s max for any channel
Software configurable..
Eight unique, consecutive elements – one gain
element per channel.
16 bits
15 bits
–80 dB
0.625 V, 1.25 V, 2.5 V, 5.0 V,
software-selectable
±0.5% typ, ±1.0% max
±5 mA max
External digital: TRIG_IN
Chapter 4