Chapter 4 Specifications; Analog Input; Absolute Accuracy (Analog Input Dc Voltage Measurement Accuracy) - Measurement Computing USB-234 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
Sampling rate
Number of channels
Input voltage range
Working voltage
Overvoltage protection
Input impedance
Input bias current
INL
DNL
CMRR
Input bandwidth
Trigger sources

Absolute accuracy (analog input DC voltage measurement accuracy)

At full scale (typical at 25 °C)
Range
±10 V
Table 1. Analog input specifications
Condition
Maximum aggregate
Power on
Power off
Table 2. Absolute accuracy (no load)
At full scale (maximum over temperature)
6 mV
Specification
Successive approximation
16 bits
100 kS/s
8 single-ended or 4 differential; software-selectable
±10 V
±10 V
±30 V max
±20 V max
>1 GΩ
±200 pA, typ
±1.8 LSB
16 bits no missing codes
56 dB (DC to 5 kHz)
300 kHz
Software, TRIG
26 mV
22
Chapter 4
System noise
0.4 mV
rms