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iRIS 220 / iRIS 320, V1.19 User Guide - 58
58
iQuest (NZ) Ltd - PO Box 15169, Hamilton, New Zealand Tel: +64 7 857-0810 Fax: +64 7 857-0811 Email: iquest@iquest.co.nz
6.6 Connecting SDI-12 Instruments. (iRIS 320 / iRIS 320V only)
SDI-12 instruments should be connected as shown in the diagram below.
See Section 4.3.3 for information on using the SDI-12 terminal mode to access SDI-12 instruments directly.
Also, refer to Appendix C – SDI-12 (iRIS 320 / 320V only) for detail on the SDI-12 specification.
NOTE: The original (PCB revision 1.1) iRIS 320 / iRIS 320V models supported the connection of SDI-12
instruments via a psuedo SDI-12 interface. See Section 13.3 in Appendix E.
TOP
BOTTOM
IRIS I/O Connector
AI4
AI3
AI2
AI1
AGND
5VOP
DI2
DI1
DO2
DO1
SDI-12
DGND
12V+
GND (-)
VIN+
GND (-)
- +
External
12V Battery
(Optional)
DATA
SDI-
12
+12V
Instrument(s)
0V
Charging source
e.g solar panel