Xylem SIT65 SATELLITE INTERNET TELEMETRY - Manual (Page 6)

Global Water Instrumentation
6
The jumper settings for the analog input configurations are as follows:
Input Type Jumper 1 Jumper 2
0-20mA 2a-2b 3a-4a
0-1mA 1a-2a 3a-3b
0-500uA 1a-2a 4a-4b
0-10VDC 1a-2a 4b-5b
0-5VDC 1a-2a 3a-4a
Sensor Power Jumper 3 Jumper 4
18V Switched 7a-8a 9a-9b
12V Switched 7a-7b 9a-9b
5V Switched 6a-7a 9a-9b
12V Continuous 7a-8a 8b-9b
Digital Inputs
Up to 3 digital inputs are available that can be configured in any combination of
accumulators (rain gauges, flow sensors) or status inputs (doors switches, power
failure). These inputs can also be programmed to initiate a transmission on any
change of state (event), a door opening or a pump turning on for example. All input
configurations are factory programmable only.
The quick-connect input connectors are color coded for easy wiring. Black terminals
are connected to ground, red terminals are connected to 12VDC continuously, and
the digital inputs are colored white. Insert the wire into the connector and push the
locking lever down. To release the wire, lift the lever up until it locks it place.
The digital inputs have 20Kohm pull-up resistors to the +5volt internal power supply
of the circuit board. This input is intended to be switched to ground only, either by a
switch contact closure or by a switching transistor. Driving these inputs with a
positive voltage other than 5volts can result in excess current drain and improper
circuit operation.