U2781A Datasheet, PDF (21/76 Pages) Keysight Technologies – USB Modular Products

High density multifunction USB DAQ
Model number
Analog input measurement¹
Function
Offset error
Gain error
–3 dB small signal bandwidth²
1% THD large signal bandwidth²
System noise
CMRR
Spurious-Free Dynamic Range (SFDR)³
Signal-to-Noise and Distortion Ratio
(SINAD)³
Total Harmonic Distortion (THD)³
Signal-to-Noise Ratio (SNR)³
Effective Number of Bits (ENOB)³
U2355A
U2356A
U2331A
23 °C ± 5 °C 0 °C to 18 °C
28 °C to 45
°C
±1 mV
±2 mV
±2 mV
±3 mV
760 kHz
400 kHz
1 mVrms
2 mVrms
64 dB
88 dB
80 dB
23 °C ± 5 °C 0 °C to 18 °C
28 °C to 45
°C
±1 mV
±2 mV
±2 mV
±6 mV
1.3 MHz
400 kHz
1 mVrms
4 mVrms
61 dB
86 dB
78 dB
23 °C ± 5 °C 0 °C to 18 °C
28 °C to 45
°C
±2 mV
±3 mV
±6 mV
±7.5 mV
1.2 MHz
N/A
3 mVrms
5 mVrms
62 dB
71 dB
72 dB
–90 dB
80 dB
13
–84 dB
78 dB
12.6
–76 dB
72 dB
11.6
1 _{Specifications are for 20 minutes of warm-up time, calibration temperature at 23 °C and input range of ±10 V.}
2 _{Specifications are based on the following test conditions.}
Bandwidth test
Model number Test conditions (DUT setting at ±10 V bipolar)
–3 dB Small signal bandwidth
1% THD Large signal bandwidth
U2355A
Sampling rate:
Input voltage:
–– –3 dB Small signal bandwidth
–– 1% THD Large signal bandwidth
250 kSa/s
10% FSR
FSR –1 dB FS
U2356A
Sampling rate:
Input voltage:
–– –3 dB Small signal bandwidth
–– 1% THD Large signal bandwidth
500 kSa/s
10% FSR
FSR –1 dB FS
U2331A
Sampling rate:
Input voltage:
–– –3 dB Small signal bandwidth
–– 1% THD Large signal bandwidth
3 _{Specifications are based on the following test conditions.}
3 MSa/s
10% FSR
FSR –1 dB FS
Dynamic range test
–3 dB Small signal bandwidth
1% THD Large signal bandwidth
Model number
U2355A
U2356A
U2331A
Test conditions (DUT setting at ±10 V bipolar)
–– Sampling rate:
–– Fundamental frequency:
–– Number of points:
–– Fundamental input voltage:
–– Sampling rate:
–– Fundamental frequency:
–– Number of points:
–– Fundamental input voltage:
–– Sampling rate:
–– Fundamental frequency:
–– Number of points:
–– Fundamental input voltage:
250 kSa/s
2.4109 kHz
8192
FSR –1 dB FS
500 kSa/s
4.974 kHz
16384
FSR –1 dB FS
3 MSa/s
29.892 kHz
65536
FSR –1 dB FS
21