Bio-Rad Gel Doc™ XR+ System - Manual (Page 32)

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The wide angle lenses have an iris and focus ring that allows users to adjust for optimum light collection
and focal plane. See image below:
For imaging of chemiluminescent samples, make sure that the iris is opened all the way.
4.7 Description of System Function and System Initialization
4.7.1 Control Panel
The front membrane touch pad control panel of the Universal Hood II allows full control of the motorized
zoom lens, UV transillumination, white epi illumination and white light transillumination. Please read the
following section to become familiar with each function.
Membrane touch pad
Epi White LED
and button
Trans White
LED and
button
Hold LED and
button
Trans UV LED
and button
Prep UV LED and
button
Power indicator
LED
Imaging indicator
LED
Focusing ring Iris control ring