Onicon System-10 Installation Manual page 9

Pulse Switch and Jumper Location
Powered Pulse:
This type of output refers to a pulse which has an associated voltage with it (see Fig. 2).
Set the selector switch, S1 to Pwrd Pulse. The allowable voltage range is 5-24 VDC. The
input impedance is set at the factory to be 11 KOHM via the impedance selector jumper
(J1, see Fig. 1). A lower impedance, 3 KOHM can be selected if required by the instrument
providing the pulse output. Consult the instrument manufacturer or ONICON if you are
uncertain as to the proper jumper selection.
Fig. 2
Open Collector (Sourcing):
This type of output refers to an open Collector Switch configured for a sourcing function
(see Fig. 3). Set the selector switch, S1 to SRC. The switch must be rated for at least 20 mA
at 20 VDC.
Fig. 3
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System-10-MOD Network Interface Installation Guide 08/16 - 0653-13 / 18321
ONICON BTU
Meter
Di3 In (+)
Di3 In (-)
ONICON BTU
Meter
Di3 In (+)
Di3 In (-)
Page 9