Crosstalk - Measurement Computing PCI-DAS64/M1/16 User Manual

PCI-DAS64/M1/16 User's Guide
Typical accuracy is derived directly from the various component typical errors. The information in
assumes that each of the errors contributes in the same direction.
Range Gain error
±5.000 V ±3.0 max, ±2.0 typ
±2.500 V ±3.0 max, ±2.0 typ
±1.250 V ±3.0 max, ±2.0 typ
±0.625 V ±5.0 max, ±4.0 typ
0 to + 5.000 V ±4.0 max, ±3.0 typ
0 to + 2.500 V ±6.0 max, ±5.0 typ
0 to + 1.250 V ±6.0 max, ±5.0 typ
As shown in Tab le 5 , total board error is a combination of gain, offset, differential linearity error (DLE), and
integral linearity error (ILE). The theoretical worst-case error of the board can be calculated by summing these
component errors. Worst-case errors are realized only in the unlikely event that each of the component errors
are at their maximum level, and causing error in the same direction.

Crosstalk

Crosstalk is defined here as the influence of one channel upon another when scanning two channels at the
maximum rate. A full-scale 100 Hz triangle wave is input on channel 1, and channel 0 is tied to analog ground
at the 100-pin user connector. Tabl
noise removed. The residue on channel 0 is described in LSBs.
Range
±5.000 V
±2.500 V
±1.250 V
±0.625 V
0 V to +5.000 V
0 V to +2.500 V
0 V to +1.250 V
Analog input full-scale gain drift
Analog input zero drift
Overall analog input drift
Common mode range
CMRR @ 60Hz
Input leakage current
Input impedance
Absolute maximum input voltage
Warm-up time
Table 5. Analog input — accuracy components specifications
Offset error
±3.0 max, ±2.0 typ
±5.0 max, ±4.0 typ
±5.0 max, ±4.0 typ
±5.0 max, ±4.0 typ
±4.0 max, ±3.0 typ
±5.0 max, ±4.0 typ
±5.0 max, ±4.0 typ
e 6 summarizes the influence of channel 1 on channel 0 with the effects of
Table 6. Crosstalk specifications
Crosstalk (LSB )
pk-pk
15
15
20
8
15
20
8
Table 7. Analog input drift specifications
DLE
±1.0 max, ±0.5 typ
±1.0 max, ±0.5 typ
±1.0 max, ±0.5 typ
±1.0 max, ±0.5 typ
±1.0 max, ±0.5 typ
±1.0 max, ±0.5 typ
±1.0 max, ±0.5 typ
Per channel rate (kS/s)
500
500
500
375
500
500
375
+0.3 LSB/°C typical
+2.1 LSB/°C typical
±2.4 LSB/°C typical
±5 V
-90 dB
2.3 nA
11
10 x 10 Ω
±15 V
60 minutes
6-6
Specifications
Table 4
ILE
±2 max, ±1.0 typ
±2 max, ±1.0 typ
±2 max, ±1.0 typ
±2 max, ±1.0 typ
±2 max, ±1.0 typ
±2 max, ±1.0 typ
±2 max, ±1.0 typ
ADC rate (kS/s)
1000
1000
1000
750
1000
1000
750