Specifications; Analog Input - Measurement Computing USB-2404-60 User Manual

Specifications

All specifications are subject to change without notice.
Typical for the range 0 to 60 °C unless otherwise noted.
All voltages are relative to the CH– signal on each channel unless otherwise noted.

Analog input

Parameter
Number of channels
A/D converter resolution
A/D converter type
Sampling mode
Sample rate range )
Sample rates )
Internal master timebase
Input voltage ranges
Overvoltage protection
Input coupling
Input impedance
Input noise
Gain drift
Offset drift
Post calibration gain match
Crosstalk
Phase mismatch
Phase nonlinearity
Input delay
Passband frequency
Passband flatness
Stopband frequency
Stopband rejection
Alias-free bandwidth
–3 dB pre-filter bandwidth
Common mode rejection ratio
(CMRR)
Spurious free dynamic range
(SFDR)
Total harmonic distortion
Full performance requires connections to a USB 2.0 Hi-Speed host controller and USB 2.0 high-
Note 1:
speed hubs.) The maximum sample rate may be lower on USB 1.1 ports.
Table 1. Analog input specifications
Conditions
)
CH+ to CH–
CH+ to CH–
channel-to- channel, 20 kHz
1 kHz
channel-to- channel
= 50 kS/s
= 50 kS/s
= 50 kS/s
= 60 Hz
1 kHz, –60 dBFS
1 kHz, –1 dBFS
1 kHz, –20 dBFS
Specification
4
24-bit
Delta-Sigma with analog pre-filtering
Simultaneous
Minimum: 1.613 kS/s
Maximum: 50 kS/s (Note 1)
Frequency: 12.8 MHz
Accuracy: ±100 ppm maximum
±60 V, nominal
±62.64 V, typical
±61.5 V, minimum
±100 V
DC
1 MΩ
320 µV rms
±5 ppm/ºC
±150 µV/ºC
0.22 dB maximum
–130 dB
0.045º/kHz maximum
0.11º maximum
38.4 +2.6 µs
0.453 ·
±100 mdB maximum
0.547 ·
100 dB
0.453 ·
24.56 kHz
116 dB
–128 dBFS
–99 dB
–105 dB
14
Chapter 4