Measurement Specialties PCI-DAS64/M2/16 manual Noise performance specifications

PCI-DAS64/M2/16 User's Guide Specifications

Noise performance

Table 8 summarizes the worst case noise performance for the PCI-DAS64/M2/16. Noise distribution is determined by gathering 50 K samples with inputs tied to ground at the user connector. Samples are gathered at the maximum specified single-channel sampling rate. Specification applies to both single-ended and differential modes of operation.

Table 8. Noise performance specifications

Range		±2 counts	±1 count	MaxCounts	LSBrms (Note 2)
± 5.000 V		60%	40%	22	3.3
± 2.500 V		60%	40%	24	3.6
± 1.250 V		60%	40%	26	3.9
± 0.625 V		45%	30%	32	4.8
0 to +5.000 V		60%	40%	24	3.6
0 to +2.500 V		60%	40%	26	3.9
0 to +1.250 V		45%	30%	32	4.8
Note 2:	RMS noise is defined as the peak-to-peak bin spread divided by 6.6.

Analog output

		Table 9. Analog output specifications
Resolution			16-bits
Number of channels			2
Voltage range			±5 V
Monotonicity			Guaranteed monotonic over temperature
Analog output zero drift			±1.6 LSB/°C
Overall analog output drift			±4.0 LSB/°C
Slew rate			2.5 V/µs
Settling time			FS step to .0008%: 6µs max, all ranges
Current drive			±15 mA
Output short-circuit duration			Indefinite @25 mA
Output coupling			DC
Output impedance			0.1 Ω
Power up and reset			DACs cleared to 0 V±75 mV max
Accuracy
	Table 10. Analog output — absolute accuracy specifications
Range	Absolute accuracy
± 5 V	±16.0 LSB
	Table 11 Analog output — accuracy components specifications
Range	Gain error (LSB)		Offset error (LSB)	DLE (LSB)	ILE (LSB)
±5.0 V	±10.0 max		±5.0 max	±1.0 max	±1.0 max

Each PCI-DAS64/M2/16 is tested at the factory to assure the board’s overall error does not exceed the absolute accuracy limits listed in Table 10.

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