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Appendix A Specifications
PC-LPM-16/PnP User Manual A-2
National Instruments Corporation
Gain error (relative to calibration reference)
After calibration
0 to 5 V and
±
5 V range ...............
±
1.0 LSB typ,
±
2.0 LSB max
All other ranges............................
±
2.0 of reading typ,
±
4.0 max
Note:
LSB refers to the least significant bit of a 12-bit conversion value in the
preceding specifications. LSB is equivalent to 2.44 mV in the 10 V range
(0 to 10 V or
±
5 V) and 1.22 mV in the 5 V ranges (0 to 5 V or
±
2.5 V).
Amplifier Characteristics
Input impedance..................................0.1 G
Ω
in parallel with
40 pF typ
Dynamic Characteristics
Bandwidth
Gain = (-3 dB)..............................200 kHz typ
Settling time to
±
1.0 LSB
for full-scale step ................................20
µ
s max at all ranges
System noise.......................................0.1 LSB rms for all ranges
Stability
Recommended warm-up time..............15 min.
Onboard calibration reference
Level............................................5.000 V (
±
2.5 mV)
Temperature coefficient ...............20 ppm/
°
C max
Long-term stability.......................15 ppm/ typ
Digital I/O
Number of channels ............................8 input and 8 output
Compatibility......................................TTL
Configuration......................................1 8-bit input port,
1 8-bit output port
Absolute max ratings ..........................+7.0 V with respect to DGND;
voltage input rating: -0.5 V with
respect to DGND
1 000 h,
a.Book : I.Appendix A Page 2 Wednesday, November 20, 1996 6:36 PM