Measurement-computing TempScan/1100 Manual de usuario Pagina 127

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TempScan / MultiScan User's Manual 879596 System Calibration 6-11
4. Send the following Calibrate Cold Junction Offset (J) command Jchan,type,temp for the first cold-
junction channel (temperature sensor #1):
TempTC/32B (for TempScan/1100): Jchan,type,nnn.n
TempTC/32A (for TempScan/1000A): Jchan,type,nnn.n
MTC/24 (for MultiScan/1200): Jchan,type,nnn.n
Wait for the command to complete. The TRIGGER LED indicator will flash for a few seconds.
Monitor the Calibration Status Register (CSR) to ensure that the Calibrate Cold Junction Offset (J)
command completed without error. Refer to the User Status (
U) command U2 to monitor and decode
the Calibration Status Register (
CSR).
5. Next, send the following Calibrate Cold Junction Offset (
J) command Jchan,type,temp for the
second cold-junction channel (temperature sensor #2):
TempTC/32B (for TempScan/1100): Jchan+4,type,ppp.p
TempTC/32A (for TempScan/1000A): Jchan+4,type,ppp.p
MTC/24 (for MultiScan/1200): Jchan+8,type,ppp.p
Wait for the command to complete. The TRIGGER LED indicator will flash for a few seconds.
Monitor the Calibration Status Register (CSR) to ensure that the Calibrate Cold Junction Offset (J)
command completed without error. Refer to the User Status (
U) command U2 to monitor and decode
the Calibration Status Register (
CSR).
6. Next, send the following Calibrate Cold Junction Offset (
J) command Jchan,type,temp for the
third cold-junction channel (temperature sensor #3):
TempTC/32B (for TempScan/1100): Jchan+16,type,qqq.q
TempTC/32A (for TempScan/1000A): Jchan+16,type,qqq.q
MTC/24 (for MultiScan/1200): Jchan+16,type,qqq.q
Wait for the command to complete. The TRIGGER LED indicator will flash for a few seconds.
Monitor the Calibration Status Register (CSR) to ensure that the Calibrate Cold Junction Offset (J)
command completed without error. Refer to the User Status (
U) command U2 to monitor and decode
the Calibration Status Register (
CSR).
7. At this point, the 3 cold-junction channels of the MTC/24 (for MultiScan/1200) scanning card have
been calibrated. This additional Step applies only to the fourth cold-junction channel of the
TempTC/32B (for TempScan/1100) and TempTC/32A (for TempScan/1000A) scanning cards.
Finally, send the following Calibrate Cold Junction Offset (J) command Jchan,type,temp for the
fourth cold-junction channel (temperature sensor #4):
TempTC/32B (for TempScan/1100): Jchan+20,type,rrr.r
TempTC/32A (for TempScan/1000A): Jchan+20,type,rrr.r
Wait for the command to complete. The TRIGGER LED indicator will flash for a few seconds.
Monitor the Calibration Status Register (CSR) to ensure that the Calibrate Cold Junction Offset (J)
command completed without error. Refer to the User Status (
U) command U2 to monitor and decode
the Calibration Status Register (CSR).
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