Gamry Instruments IMX8 Operator's Manual page 30

Installation
Click the OK button.
A window appears which prompts you to select a Multiplexer.
Click the OK button.
Watch the eight amber LEDs on the front of the multiplexer illuminate in sequence two times.
Listen for the simultaneous clicks of the relays.
b. Select Set Channel.
Click the OK button.
A window appears which prompts you to select a Multiplexer.
Click the OK button.
Activate the checkboxes corresponding to the active channels on the multiplexer.
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