Page 72 - M1-12 Ops Manual McMurdo 2016

PRELIMINARY HARDWARE SETTINGS
1) Remove the instrument from its case.
2) It is necessary to set J106 according to the desired input type as shown in the following figure.
OPEN INPUT CIRCUIT
INPUT J106
For TC input, it is possible to select overrange indication (standard) or underrange indication set- ting the CH101 and SH101 according to the follow- ing table:
TYPE 1-2 TC-RTD open 60 mV open 5V close 10 V open 20 mA open
3-4 5-6 7-8 9-10 close open open open close open open open open close open open open close open open open open close close
Overrange (STD) CH101 = close SH101 = open Underrange CH101 = open SH101 = close
NOTE : the not used jumper can be positioned on pin 7-9
ƒrIHI
grIHI
†IHI
tIHT
Fig. 14
tIHP
P R T V IH
I Q S U W
3) Select the output 1 contact : NO (standard) or NC by setting J102 according to the following table:
Contact NO (standard) NC J102 1-2 2-3
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This instrument is able to identify the open circuit for TC and RTD inputs.
The open input circuit condition for RTD input is shown by an "overrange" indication.
Both pads are located on the soldering side of the CPU card
Fig. 15