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80 Option Board analog inputs switch settings
Section 3: Installation Reference, Installation, and Operations Manual
August 2014 3-9000-743 Rev U
Figure 3-26 CPU Board Switch Banks S8 and S9
3.5.3 Option Board analog inputs switch settings
The Option Board provides the capability to sample analog temperature and pressure 4-20 mA
signals. These input signals are individually configurable for sinking or sourcing current via
Option Board switches as described in the tables below (Table 3- 33 through Tab le 3 -3 8) and in
Daniel drawing DE-21056 (particularly page 3, notes 24, 25, and 28, see Appendix I).
Group Output CPU Board
Switch
Switch Position
Internally
Powered
Open
Collector
1
DO1 S8-1 TTL OC
DO2 S8-2 TTL OC
Freq1A S8-3 TTL OC
Freq1B S8-4 TTL OC
2
DO3 S9-1 TTL OC
DO4 S9-2 TTL OC
Freq2A S9-3 TTL OC
Freq2B S9-4 TTL OC
S8 (Group 1)
S9 (Group 2)
If the analog input is configured for “Source” mode (i.e., powered by the meter), then it must
be at the bottom of the loop (stack).
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