Specifications; Analog Input - Measurement Computing USB-1808X-OEM 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
ADC resolution
Number of channels
Input voltage range
Absolute max input voltage
Input impedance
Input bias current
Input bandwidth
Input capacitance
Common mode voltage
range
Common mode rejection
ratio
Crosstalk
Input coupling
Sample rate
Scan clock source
Trigger source
Channel gain queue
Warm-up time
Table 1. General analog input specifications
Condition
CHx relative to AGND
All input ranges, small signal
(–3 dB)
±10 V range
±5 V range
0 V to 10 V range
0 V to 5 V range
f
≤ 1 kHz, all input ranges
IN
±10 V, adjacent channels,
DC to 100 kHz
Up to 8 elements
18
Specification
Simultaneous
18 bits
8 differential (DIFF), 8 single-ended (SE);
software-selectable per-channel for SE or DIFF
±10 V, ±5 V, 0 V to 10 V, 0 V to 5 V
Software-selectable per channel
±25 V max (power on)

±15 V max (power off)

>1 GΩ (power on)

1000 Ω (power off)

±50 pA
2.0 MHz
50 pf
±10.1 V
±10.1 V
±10.1 V
±10.1 V
90 dB
–95 dB
DC
0.023 Hz to 200 kHz; software-selectable
Internal input scan clock or external input scan
clock (ICLKI pin)
ITRIG (see External trigger on page 24)

Digital pattern detection (see Pattern trigger on

page 24)
Software-selectable. Queue list may contain up to
eight elements of unique, consecutive channels
paired with any valid range.
15 minutes min
Chapter 4