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Accuracy, Analog input dc voltage measurement accuracy, Noise performance – Measurement Computing E-1608 User Manual

Page 21: Settling time, Analog output

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E-1608 User's Guide

Specifications

21

Accuracy

Analog input DC voltage measurement accuracy

Table 2. DC Accuracy components and specifications. All values are (±)

Range

Gain error
(% of reading)

Offset error
(µV)

INL error
(% of range)

Absolute
accuracy at
Full Scale
(µV)

Gain
temperature
coefficient
(% reading/°C)

Offset
temperature
coefficient
(µV/°C)

±10 V

0.024

915

0.0076

4075

0.0014

47

±5 V

0.024

686

0.0076

2266

0.0014

24

±2 V

0.024

336

0.0076

968

0.0014

10

±1 V

0.024

245

0.0076

561

0.0014

5

Noise performance

For the peak-to-peak noise distribution test, a differential input channel is connected to AGND at the input
terminal block, and 16384 samples are acquired at the maximum rate available at each setting.

Table 3. Noise performance specifications

Range

Counts

LSBrms

±10 V

6

0.91

±5 V

6

0.91

±2 V

7

1.06

±1 V

9

1.36

Settling time

Settling time is defined as the accuracy that can be expected after one conversion when switching from a
channel with a DC input at one extreme of full scale to another channel with a DC input at the other extreme of
full scale. Both input channels are configured for the same input range.

Table 4. Input settling time specifications in µS, typical

Range 4 µS settling accuracy (% FSR) 6 µS settling accuracy (% FSR) 10 µS settling accuracy (% FSR)

±10 V

0.0061

0.0031

0.0015

±5 V

0.0061

0.0031

0.0015

±2 V

0.0061

0.0031

0.0015

±1 V

0.0061

0.0031

0.0015

Analog output

Table 5. Analog output specifications

Parameter

Condition

Specification

Number of channels

2

Resolution

16 bits

Output ranges

Calibrated

±10 V

Output transient

Powered on

Duration: 5 ms
Amplitude: 2 V p-p

Powered off

Duration: 400 ms
Amplitude: 10 V p-p

Differential
non-linearity

16-bit monotonic

±0.35 LSB typ
±1 LSB max

Output current

AOUTx pins

±3.5 mA max (Note 2)