EXFO IQS-3150 Variable Attenuator for IQS-500/600 - Manual (Page 19)

Getting Started with Your Variable Attenuator
Variable Attenuator 13
Inserting and Removing Test Modules
The module is correctly inserted when its front panel is flush with the front
panel of the controller or expansion unit.
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-3150 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.
2. Place your fingers underneath the module or hold it by the retaining
screw knob (NOT by the connector) and pull it out.
Retaining screw knob