User`s manual

NexSens Technology, Inc.
iSIC User‟s Manual 49
2.6.3 Troubleshooting Analog Sensors
In iChart, go to the Advanced | iSIC | iSIC menu. The iSIC Setup dialog box will open:
The first screen gives you the iSIC connection opens. Enter the COM port and connection method
of the desired iSIC as well as the iSIC Address. For example, if you are trying to connect to a
2100-iSIC with a modem connected to COM3, select 2100-iSIC from the connection drop down
menu, and COM3 from the COM port menu. The address will typically be „1‟ unless connecting to
a 4100-iSIC. When this information has been correctly entered, click the Connect button.
After connecting click on the Analog tab.
The analog tab allows you to read the actual voltage on each analog channel as well as enable
the 12V switches. SW12VA is located on the green digital connector of the iSIC. Analog channels
0 to 7 (singled ended SE0-SE7 or differential DE0-DE3) are located on the analog green terminal
strip. SE8-15 or DS4-7 are only available on analog expansions and DO and temperature are
only available on dissolved oxygen expansions.
When selecting single ended channels, values ranging up to a few hundred are normal when no
sensor is connected to the data logger. In differential, these readings should be zero.