EXFO IQS-12002B Calibration System - Manual (Page 17)

Getting Started with Your Calibration System
Calibration System 13
Inserting and Removing Test Modules
When you turn on the controller unit, the startup sequence will
automatically detect your module.
Note: You can insert IQ modules into your controller or expansion unit; the IQS
Manager software will recognize them. However, the IQS-500 locking
mechanism (retaining screw) will not work for IQ modules.
To remove a module from your controller or expansion unit:
1. While pulling gently on the knob, turn it counterclockwise until it stops.
The module will slowly be released from the slot.
Retaining screw knob