Service manual

Revision 2/18/05 3 - 47
Hardware Description
Visual Stimulators
Visual Stimulators for VIASYS neurodiagnostic
systems include:
• 2015 Pattern Reversal (most used)
• LED Goggles
• Photic Strobe
2015 Pattern Reversal
The 2015 Pattern Reversal Visual Stimulator provides
pattern reversal or pattern flash stimuli for recording
visual evoked potentials and electroretinograms. This
stimulator is used in clinical environments. The 2015
consists of a base unit and accompanying CRT monitor.
The 2015 base unit is a self-contained unit and is a LRU.
The 2015 Pattern Reversal Visual Stimulator can
operate using external or internal trigger modes, and
connects to the neurodiagnostic system’s Trigger 1 Out
connector.
NOTE:
Refer to the 2015 Service Manual for detailed service
information.
LED Goggles
The LED Goggles provide a red flashing stimulus,
which can elicit a visual evoked response through
closed eyelids. LED goggles are primarily used in the
O.R. or ICU with an anesthetized or otherwise
unconscious patien.
The LED goggles are driven directly from the Endeavor
CR and VikingQuest Base Unit. On the VikingSelect,
the goggles plug into the SC-1 Stimulus Controller
module.