
2180A
Table 2-3. RTD Input Module Switch Functions
SWITCH
NO.
SWITCH
POSITION
SWITCH FUNCTIONS
SI
0-5
Programs the microcomputer (juc) for each RTD probe type (See Table 2-2.)
6,7
NOT USED
8
''RESISTANCE'', programs the ¡jlc to read ohms.
9
"CAL'', programs the ¡ic to read juV (bypasses the linearization program).
S2
.1
Causes the analog to digital converter circuitry (A/D) to have jjlV input sensitivity and
displays temperature to 0.1° resolution only.
AUTO
Causes the A/D to automatically change from .01° to 0.1° resolution for overrange or
0.1° to .01° resolution for underrange.
S3
Scan
Not Used
Man
MUST BE LEFT IN THIS POSITION DURING NORMAL OPERATION.
2-6
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