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Miscellaneous, Crystal oscillator, Cio-sta-tc adapter – Measurement Computing PCI-DAS-TC User Manual

Page 16: Calibration error

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PCI-DAS-TC User's Guide

Specifications

16

Table 3. Thermocouple measurements (not including CJC errors)

TC
Type

Range

Accuracy (Worst Case)

Resolution

@ 50 Hz

@ 60 Hz

@ 400 Hz

J

0 to 750 °C

±0.5 °C

0.05 °C

0.05 °C

0.40 °C

K

200 to 1250 °C

±1.4 °C

0.04 °C

0.05 °C

0.40°C

E

200 to 900 °C

±1.1 °C

0.03 °C

0.04 °C

0.25 °C

T

200 to 350 °C

±0.9 °C

0.03 °C

0.04 °C

0.25 °C

R

0 to 1450 °C

±2.3 °C

0.06 °C

0.07 °C

0.44 °C

S

0 to 1450 °C

±2.3 °C

0.06 °C

0.08 °C

0.52 °C

B

0 to 1700 °C

±3.0 °C

0.07 °C

0.08 °C

0.54 °C

Miscellaneous

Table 4. Miscellaneous specifications

Averaging

Moving average, 1 to 16 samples, software-selectable

Calibration

Calibration is performed with each channel scan to remove offset and gain error. CJC
channel is also measured with each calibration.

Processor reset

On power-up, watchdog timeout, or software command. Processor boots within one
second of reset. Active low.

Watchdog timer

1.6 seconds nominal. Processor generates watchdog disable signal after boot-up.

Temperature units

Programmable for conversion to C or F

Interrupts

INTA# mapped to IRQn by PCIBIOS at boot time

Interrupt enable

Programmable

Interrupt sources

Dual port RAM when the processor mailbox has data.

Crystal oscillator

Table 5. Crystal oscillator specifications

Frequency

32 MHz

Frequency accuracy

100 ppm

CIO-STA-TC adapter

Table 6. CIO-STA-TC adapter specifications

CJC type

AD592CN

Configuration

CJC centered in an isothermal block on which the screw terminals have been mounted.

Channels

16 (plus CJC output)

Calibration error

Table 7. Calibration error specifications

@ 25 °C

0.3 °C typical, 0.5 °C maximum

25 °C to +105 °C

0.5 °C typical, 1.0 °C maximum