Information

10
Model 2680A-PAI Module
Input Range Resolution Accuracy (3-Sigma)
1
DC Volts 90 mV to 150/300 V 0.3 mV to 1 mV 0.01 %
AC Volts
2
300 mV to 150/300 V 10 mV to 100 mV 0.3 %
Resistance 300 Ω to 3 MΩ 1 mΩ to 10 Ω 0.015 %
Frequency 15 Hz to 1 MHz 0.01 Hz to 100 Hz 0.05 %
RTD (Pt100) -200 °C to 600 °C 0.003 °C 0.06 °C
Thermocouples
J -100 °C to 760 °C 0.02 °C 0.35 °C
K -100 °C to 1372 °C 0.02 °C 0.4 °C
T -100 °C to 400 °C 0.02 °C 0.3 °C
Other Thermocouple types R, S, B, C, E, N, L, U
Model 2680A-FAI Module
Input Range Resolution Accuracy (3-Sigma)
1
DC Volts 90 mV to 50 V 3 mV to 10 mV 0.02 %
AC Volts
2
300 mV to 30 V 10 mV to 1 mV 0.3 %
Resistance 300 Ω to 3 MΩ 10 mΩ to 100 Ω 0.02 %
Frequency 15 Hz to 1 MHz 0.01 Hz to 100 Hz 0.05 %
RTD (Pt100) -200 to 600 °C 0.03 °C 0.16 °C
Thermocouples
J -100 °C to 760 °C 0.2 °C 0.7 °C
K -100 °C to 1372 °C 0.2 °C 0.8 °C
T -100 °C to 400 °C 0.2 °C 0.7 °C
Other Thermocouple types R, S, B, C, E, N, L, U
1
Total instrument accuracy for 90 days following calibration and ambient temperature range of 18 to
28 °C. Includes A/D errors, linearization conformity, initial calibration error, isothermality errors, refer-
ence junction conformity and power line voltage effects within the range from 107 V ac to 264 V ac.
2
Accuracies for crest factor to 2.0.
2686A active channels and memory card capacity (scans)
Memory
usage/
Active
channels
20 ch 40 ch 60 ch 80 ch 100 ch 120 ch
128 MB 800,000 528,000 400,000 320,000 264,000 224,000
256 MB 1.6 M 1.056M 800,000 640,000 528,000 448,000
512 MB 3.2 M 2 .112 M 1.6 M 1.28 M 1.056 M 896,000
1 GB 6.2 M 4.224 M 3.2 M 2.56 M 2.112 M 1.792 M
Estimating space: 80 bytes/scan + 4 bytes/channel scanned. (Allow 4.5 % overhead for card
formatting)
2680 Series DIO Module
and Universal Input Module