This guide is designed to help you fix common problems associated with failed over-the-air communication between a cellular iSIC or SDL data logger and a computer. Cellular communication problems can arise for a number of different reasons, including low power, weak cellular signal strength, improper physical connections, activation issues, or data account setup problems. To […]
The battery that powers an iSIC data logger is user-replaceable. 1. Disconnect the fastons from the battery terminals inside the iSIC. 2. Remove the two screws on the battery plate with a #3 Phillips head screwdriver. Store the battery plate and screws. 3. Remove the old battery and put the new battery in its […]
Analog sensors require a millivolt (mV) reading in order to determine an accurate output. To find these readings, follow the process below. 1. Open iChart without a project file. 2. Select Advanced|iSIC|iSIC from the menu bar. 3. Select the appropriate communication under PC Settings. 4. Type the address of the data logger and click Connect. 5. Click the Analog tab. […]
In order to connect a sensor to the iSIC, the output voltage must be cut down to 2.5V. In order to accomplish this, two resistors must be utilized to act as a voltage divider. The diagram below demonstrates the proper connection for a 5V sensor. Note: ADx is any single ended iSIC analog inputs […]
The iSIC plate is designed to hide all the parts that are not meant to be altered by the customer. However, there are a few occasions when it is necessary to remove the plate. For example, parts could fall behind the plate, or the PCB may need to be sent back to NexSens for repair. […]
Switch power is used in data logging applications where power must be conserved. There are two separate implementations of this concept within the iSIC data logger. Sensor Switch Power Sensors plugged into SDL ports P1, T, and A or powered through pin 2 of an iSIC’s digital terminal strip are powered using switch power. This […]
The maintenance switch is a feature in iChart software that can be used for external control of an iSIC data logger. Once the feature has been enabled and a channel has been set, a simple switch controls if the iSIC logs data or not. 1. Open iChart without a current project. 2. From the menu […]
NexSens iSIC data loggers have a default address of 1. When connecting multiple iSICs to a single PC COM Port, unique addresses must be assigned to differentiate between them. This problem occurs most often when using a system of 4100-iSICs. 1. Open iChart without a current project. 2. From the menu bar select Advanced |iSIC | […]
In order for a base radio to communicate with iChart, the correct COM port needs to be selected. Sometimes the base radio’s COM port and the port that iChart checks for the base does not match. If this is the case, the best option would be to change the COM port that iChart checks for […]
The iSIC data logger’s DIO0 and DIO1 lines are programmable digital input/output signals. In revision 6, the signals are 5V logic and can tolerate up to 6V. In revision 7, the signals are 3.3V logic and can tolerate up to 35V indefinitely. The most common use of these lines is to use them to drive […]
