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| Pixel Pitch (mm) || 0.276 || 0.282 || 0.265 || 0.248
| Pixel Pitch (mm) || 0.276 || 0.282 || 0.265 || 0.248
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|-
| Brightness (cd/m<sup>2</sup>) <ref name="spec">As specified by manufacturer, measured values may differ.</ref> || 350 || 250 || 350 || 250
| Brightness (cd/m<sup>2</sup>) <ref group="fn" name="spec">As specified by manufacturer, measured values may differ.</ref> || 350 || 250 || 350 || 250
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|-
| Contrast <ref name="spec" /> || 1000:1 || 1000:1 || 1000:1 || 1000:1
| Contrast <ref group="fn" name="spec" /> || 1000:1 || 1000:1 || 1000:1 || 1000:1
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|-
| Panel Type || TN || TN || IPS || TN
| Panel Type || TN || TN || IPS || TN
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|-
| Viewing Angle (horizontal/vertical) <ref name="spec" /> || 170°/160° || 170°/160° || 178°/178° || 178°/178°
| Viewing Angle (horizontal/vertical) <ref group="fn" name="spec" /> || 170°/160° || 170°/160° || 178°/178° || 178°/178°
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|-
| Vert. Refresh Rate (Hz) || 100/120/144 || 60 || 60 || 60
| Vert. Refresh Rate (Hz) || 120<ref group="fn"> Default value. Maximum refresh rate is 144 Hz.</ref>|| 60 || 60 || 60
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|-
| Response Time GtG (ms) <ref name="spec" /> || 1 || 5 || 8 || 14
| Response Time GtG (ms) <ref group="fn" name="spec" /> || 1 || 5 || 8 || 14
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|-
| Display Colors || 16.7 mln || 16.7 mln || 16.7 mln || 16.7 mln
| Display Colors || 16.7 mln || 16.7 mln || 16.7 mln || 16.7 mln
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| Color Gamut <ref name="spec" /> || 72% || 83% || 82% ||
| Color Gamut <ref group="fn" name="spec" /> || 72% || 83% || 82% ||
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| Touch || style="background-color:#F99;" | No || style="background-color:#F99;" | No || style="background-color:#F99;" | No || style="background-color:#9F9;" | Yes, capacitive
| Touch || style="background-color:#F99;" | No || style="background-color:#F99;" | No || style="background-color:#F99;" | No || style="background-color:#9F9;" | Yes, capacitive
| Other Connections || Headphone jack, USB 2.0 Hub || USB 2.0 Hub || Headphone jack, USB 2.0 Hub || USB 2.0 Hub
| Other Connections || Headphone jack, USB 2.0 Hub || USB 2.0 Hub || Headphone jack, USB 2.0 Hub || USB 2.0 Hub
|}
|}
<references group="fn" />
== Calibration ==
== Calibration ==
==== Installation ====
==== Installation ====
The color profile should be pre-installed on all lab computers and cannot be changed by the default user. Contact our [mailto:c.lieu@socsci.ru.nl administrator] if you are not sure whether the correct profile is loaded.
The color profile should be pre-installed on all lab computers and cannot be changed by the default user. Contact our [[Administrator]] if you are not sure whether the correct profile is loaded.
== KVM Switches ==
== KVM Switches ==
== Motion blur reduction ==
== Motion blur reduction ==
[[File:LabMonitorBlur.PNG|thumbnail|full persistence mode shows a steady image]]
[[File:LabMonitorNoBlur.PNG|thumbnail|low persistence mode ('blur reduction') shows a pulsed image]]
By default the Benq XL2420Z is in 120 Hz mode. This means that the minimum time that a stimulus is shown is 8.3 ms. The monitor menu, reachable with the touch buttons on the right side of the monitor has a ''blur reduction'' setting. This changes the backlighting of the LCD screen in such a way that it is lighted only a quarter of the time. A stimulus present on the screen for one frame will now be visible for only 2ms.
This setting is useful when the participant is moving with respect to the screen or is watching a moving object on the screen. The perceived blur will be reduced with 75%.
[[File:LabMonitorNoBlur.PNG|thumbnail]]
See [http://www.blurbusters.com/ www.blurbusters.com] for more information on (motion) blur.
Additionally the setting is useful when not only the onset (moment of appearing) but the moment the object is perceived is important. Do note that the latency of the onset does not change.