Automatic restart function

For long-term measurements, either multiplexed or single-chamber, you'll want the instrument to restart automatically if there is a disruption to the power supply.

Note: This function is available only when the LI-8100A is powered via the auxiliary sensor interface or from the multiplexer. It is not available when powered by a battery inside the analyzer control unit.

There are two steps to enable the automatic restart: 1) Move a hardware jumper; and 2) Configure the software.

1. Move the jumper

The jumper is located directly below the PC card slots in the analyzer control unit. Remove the access panel to view the jumper. There are three pins aligned horizontally on the underside of the circuit board, below the words “Power On."

Figure 3‑1. Keypad jumper position (A) and Aux. In jumper position (B).

When configured at the factory, the jumper is on the leftmost and center pins (Figure 3‑1). In this position, if power is interrupted, the instrument can only be restarted by pressing the ON/OFF button on the keypad. Reposition the jumper so that it covers the center and rightmost pins to configure the instrument to power on after a power interruption.

WARNING: When the jumper is positioned to automatically restart, the LI-8100A presents a potential shock hazard. If power is interrupted and the unit shuts off and the user is unaware that a power interruption caused the instrument to shut down, power could be automatically restored while the user is in contact with these internal components. Therefore, we recommend that you always disconnect the power supply from the instrument before servicing any internal components in the analyzer control unit.

2. Enable the software auto restart function

In the PC Software:

Click 8100 > Instrument Settings and enable the Resume measurement on instrument restart (Figure 3‑2).

Figure 3‑2. Automatic restart setting in the Windows® software.

In the App:

Tap on LI-8100A > Instrument Settings and set Automatic Restart to Enabled (Figure 3‑3).

Figure 3‑3. Automatic restart setting in the LI-8100APP.