VIEWPixx /EEG, VIEWPixx, VIEWPixx /3D
What is a “CRT replacement monitor?”
Our VIEWPixx series of monitors are LCD displays that use modern-day technology, but have custom hardware to mimic the highly desirable temporal properties of old-fashioned CRT displays. To find out more, see Choosing the Right VIEWPixx .
What is the difference between the three VIEWPixx monitors?
There’s an entire VOCAL guide that explains this in detail: Choosing the Right VIEWPixx. You can jump to the end for a summary table that provides a side-by-side comparison.
What is the gamma of your VIEWPixx displays?
The exact number varies slightly from unit to unit. A good rule of thumb for most LCD monitors, including our VIEWPixx displays, is a gamma of 2.2.
If your experiment requires extremely precise gamma correction, the best method to determine your display-specific gamma is to measure it directly with a spectrophotometer or colorimeter. See Gamma-Correct the Luminance of a Display.
I want to mount my monitor on a wall bracket or rolling stand. What are your recommendations?
All three of our VIEWPixx monitors use the following mounting standards:
VESA MIS-D/E, MIS-F
Hole pattern: 100 x 100 mm & 75 x 75 mm
This size is an industry standard, and mounting bracket manufacturers should specify if they are compatible. Please note, our monitor casing is metal and is fairly heavy (around 13.6 kg /30 lbs including the removable stand). Any mounting solution must be rated to support this weight.
At the office, we mount our test displays on mobile relay racks like these, along with a fixed TV wall mount bracket similar to these. This wall mount is large enough to be fixed on the rack and has adjustable brackets that can be used to attach the monitor. This solution works well for a mobile display.
Can I run my display at 60 Hz during an experiment? Why is there a flashing red square in the corner?
The VIEWPixx series of monitors are designed to run at 100 Hz or 120 Hz. When the video signal drops below 100 Hz, the display automatically implements an internal frame buffer and begins resampling the video signal to maintain a screen refresh rate of 120 Hz. A flashing red square will appear in the top left corner of the screen whenever your display is in resampling mode.
This resampling mode can cause problems for timing-sensitive experiment tools. For this reason, we do not recommend using 60 Hz in experiments where timing is critical for stimulus presentation or data collection.
Do the VIEWPixx and VIEWPixx /3D run at high bit depth by default? How do I enable these modes?
The VIEWPixx can display up to 12 bits per colour (bpc), and the VIEWPixx /3D can display up to 10 bpc. By default, both displays will show 8 bpc, high definition full-colour video at 120 Hz. This is the maximum possible bandwidth supported by a dual-link DVI protocol.
In order to show video at higher bit depths, it is necessary to make a tradeoff to free up bandwidth for the additional bits. There is a guide to our high bit depth modes here: High-Bit-Depth Video Modes.