Optiquest iRIS 220 manual Connecting SDI-12 Instruments. iRIS 320 / iRIS 320V only

iRIS 220 / iRIS 320, V1.19 User Guide - 58

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

AI4

AI3

AI2

AI1

AGND

5VOP

DI2

DI1

DO2

DO1

SDI-12

DGND

12V+

GND (-)

VIN+

GND (-)

BOTTOM

IRIS I/O Connector

DATA

SDI-12

+12V Instrument(s)

0V

Charging source	-	+
e.g solar panel
		External
	12V Battery
	(Optional)

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