Blur Busters Forums

I'm eventually going to write a post and ask Chief blur buster to sticky it, so people can use the strobe phase setting to get the most out of the input lag of the monitor. But anyway:

Strobe phase 000 has 1 frame (1000 divided by refresh rate I milliseconds) higher input lag, but this is optimized for LOWEST amount of strobe crosstalk at the bottom of the screen, with minimal crosstalk at the top of the screen (increasing strobe duty will increase the amount of crosstalk at the top (slightly) while moving the bottom farther down, (again, although slightly). Example: Strobe phase 000 at 60hz refresh rate (single strobe forced ON in the service menu) will have 16 ms higher input lag than strobe phase 100. (1000 / 60)=16.7ms. Strobe phase 000 at 120hz refresh rate will have 8.3ms higher input lag (1000 / 120)=8.3ms.


WITHOUT a Vertical Total tweak active, strobe phase at 100 (max) will have a LOWER input lag by exactly one frame, compared to strobe phase 000. Again this is 1000 / refresh rate in milliseconds. At 144hz this is 1000 / 144=6.9ms improvement (one frame). At 120hz it's 8.3ms, At 100hz it's 10.0ms, etc.

The drawback to having a strobe phase set to 100 is there is MORE crosstalk at the bottom of the screen than strobe phase 000. This makes strobe phase 100 not ideal for anything requiring full screen vision, like 2D side scrolling games or general desktop use. Games which have a gigantic HUD covering the bottom of the screen (E.g. call of duty, CS:GO, etc) will work well with this.


*WITH A VT TWEAK*, the maximum strobe phase is LIMITED due to the backlight switching to 60hz pulse widths, despite the refresh rate NOT being 60hz (I think the XL2430T will show the true refresh rate regardless of a VT 1350/VT 1500 / VT 1502 tweak being in use; the XL2420Z and XL2720Z will report 60hz in the OSD). The maximum strobe phase allowed is dependent on the VT tweak and the refresh rate:

Assuming VT 1500:
The maximum strobe phase before the backlight shuts off is:

125hz: 047
120hz: 049
100hz: 059
91hz: 067
85hz: (I forgot but higher than 067)

Strobe phase is the same as "Area" in the service menu.

When using a Vertical total tweak, when you increase the strobe phase past a certain point, you wil notice the backlight eventually start getting dimmer and the amount of blur reduction becoming stronger. This is because the strobe duty is starting to decrease internally(even though the actual set value for strobe duty (aka "Intensity" in the OSD) isn't changing. The point right before the backlight shuts off is equivalent to strobe duty 001 (this MIGHT be reversed in the XL2430T and may be intensity 25 instead), which is equal to 0.167ms persistence. (Since a VT tweak is active the 60hz backlight pulse widths are used).

the backlight shuts off because if the strobe phase is increased any more, the persistence becomes 0.0ms (aka strobe duty 000) and the lowest value is 001 (0.167ms persistence).

So for absolute LOWEST input lag in FPS games, you want the strobe phase as high as possible while still maintaining a decently bright screen, but at the expense of more bottom side crosstalk.

No one knows WHY the strobe duty starts decreasing as the phase increases with a VT tweak active, but we DO know that the reason the vertical total tweak works in the first place, is due to how the scaler interacted with Lightboost mode internally to lower Lightboost crosstalk; Apparently lightboost sends a VT 1502 tweak signal to the monitor scaler internally, causing it to strobe with a screen size of 1440 vertical rows (note : the actual VT that tells the monitor to switch into lightboost mode is differnet, e.g. 1138, 1143 and 1149). But Lightboost uses accelerated scanout which is basically doing the exact same thing as the VT 1500 tweak is doing--causing the scaler to work with a longer blanking interval, which makes it think that the screen size is 1280x1440 (long story, but the factory menu shows this as the scaler resolution).

Anyway now that you know how strobe phase and having 1 frame of improved or worse input lag works, you have to balance it for your game. You can use this full screen test to see how much strobe crosstalk you have with a VT 1500 tweak, then test different "Area" (strobe phase) values.

http://www.testufo.com/#test=photo&phot ... &height=-1

Remember you can set "Single Strobe" to enabled in the service menu for refresh rates lower than 100hz.
(Power off, hold button #4 for 5 seconds, power on, release button #4. Button #4 will then enter the service menu. The factory menu is button #3 and #4).

Great reading! Thanks alot for it.

The only weird thing is that I still cannot get it to work with VT 1500. I always end up with a black-screen.

After work today I will go through every single step again and make sure I didn't miss anything. Mostly I don't, but I guess this time I missed something important.

Altho, I managed to calibrate and set the monitor up pretty good with minimal strobe crosstalk(?) from lower-mid and up with the bottom as the "worst" part - as I play CSGO I'm completely OK with it. But as I've read I'm still interested in getting that last frame.. we never seem to be satisfied.. right?

You need to go into the service menu and set the strobe phase to 000.
You should also be able to do it through the OSD by setting the Area to 000.
They are the same setting.

If it's just a black screen and NOT an out of range error, it's because the strobe phase/area is probably set past 50.

Falkentyne wrote:You need to go into the service menu and set the strobe phase to 000.
You should also be able to do it through the OSD by setting the Area to 000.
They are the same setting.

If it's just a black screen and NOT an out of range error, it's because the strobe phase/area is probably set past 50.

Yes, I've been in the Service menu and I've set the Strobe Phase to 000. I had 040 before (played around some) but it still gives me black screen. Never had any out of range error (yet)

Guys, sorry for stupid question, but i dont realy understand... is ToastyX's patcher works only for SLI-based PC's and Vista and > Windows systems? My GT640 and Windows XP SP3 are ok for this?

Which patcher are you referring to? The pixel clock patcher?

I can't help with that but that's only for windows systems. And it's for bypassing the DVI driver based limits for single and dual link dvi clocks (Dual link DVI is limited to 330 MHz officially and drivers will usually not display the custom refresh rate if it exceeds that). You can usually get up to 450 MHz pixel clock hardware wise, because the DVI input receiver (on the main board) is specified to go up to at least 450 MHz, not 330 mhz. The driver limits of 330 MHz for dual link are just there to maintain compatibility, as otherwise, you start running into limits caused by substandard cables, etc.

Also most video cards have a TMDS transmitter that can handle 225 MHz per link. Thus the 450 MHz limit again. Whether you can go past that depends on the scaler board and other hardware, as well as the cable.

I use dvi dual link cable. But i cant set 144hz for few resolutions i plan to try (with cru and nvidia panel).
You right, i talking about pixel patcher, and than i start it it says: "failed to locate driver file."

Falkentyne thank you for Yours answer, but my english not very well. You want to say what problem could be with my motherboard or other hardware, whats why i cant use The Pixel Clock patcher, am i right? Also i'am trying to find nvlddmkm.sys file, but there is no it on my system drive. How i can find what kinf of hardware problem is? When i start patcher i get error message "failed to locate driver file." Do you know why it happens? TIA.

I got XL2430T just yesterday and so far I really like it, I have some questions about it tho. Looks like there is quite advanced settings here so I'm sorry for my noob questions.

I am using display pilot app to adjust the settings, I found a link for non buggy version in this thread, also I am using ICC profile on the first page. I am using 1920x1080 @ 144 Hz. on Win 10 via DP .

1-) I want to save 2 different profiles, for daily use (eye friendly settings) and for my BF4 game (more eye tiring settings). So I wanted to use Gamer 1 and Gamer 2 profiles. There is FPS1 and FPS2 and RTS modes that I cant change, only Gamer 1,2,3. Should I change between these profiles (or Modes) inside display pilot by just clicking?

2-) Looks like I can't choose Picture Mode Standard and Game mode at same time, but on first page the settings say "picture mode:standard" How can I use standard picture mode with Gamer1 mode?

3-) I saved my Gamer1 , 2 and Standard settings and when I turn off my computer and turn it on next day my settings were gone (it was looking bad) so should I save them as "preset" under Tools -> Preset?

4-) I read about some bug about modes or profiles what is it exactly? Does profile settings get reset? Or does value gets back to default value? What is it exactly?

CybeRFernandes wrote:** Updated at 13/08/2015 **

So, after almost a week tweaking and configuring out the BenQ XL2430T, i managed to get a balanced mix of settings i'm sharing with all you guys. The BBR tool wasn't needed at all since this monitor brings up the new Motion Blur Reduction which comes with Intensity and Area settings on the OSD (same as Strobe Duty and Strobe Phase) that take care of job. I've created a custom resolution of 1080p @ 120Hz with VT1500. Hope to help other XL2430T owners and I'll be looking for your opinions and sugestions

VT Tweak: 1500
Refresh Rate: 120Hz
BenQ Service Menu: Single Strobe ON
ICC Profile: http://www.displaylag.com/icc-profiles/ ... 0Final.icm

Gamer Profile 1 (Regular Usage):

1920x1080
Blur Reduction: ON
Intensity: 16
Area: 40
Black eQualizer: 0
Color Vibrance: 9
Low Blue Light: 0
Instant Mode: ON
Auto Game Mode: OFF
Picture Mode: Standard
Brightness: 90
Contrast: 50
Sharpness: 6
Gamma: Gamma 5
Color Temperature: User Define (R:98, G:100, B:99)
AMA: High
Dynamic Contrast: 0
Senseye Demo: OFF
Display Mode: Full
HDMI RGB PC Range: RGB (0~255)
Overscan: OFF

Gamer Profile 2 (Counter Strike: Global Offensive):

1920x1080
Blur Reduction: ON
Intensity: 16
Area: 40
Black eQualizer: 0
Color Vibrance: 18
Low Blue Light: 0
Instant Mode: ON
Auto Game Mode: OFF
Picture Mode: Standard
Brightness: 100
Contrast: 50
Sharpness: 6
Gamma: Gamma 5
Color Temperature: User Define (R:99, G:100, B:99)
AMA: High
Dynamic Contrast: 0
Senseye Demo: OFF
Display Mode: Full
HDMI RGB PC Range: RGB (0~255)
Overscan: OFF

Im using this settings for my monitor but my question now is if i play CS GO at resolution 1280 x 960 streched i will still benefit from blur reduction or i need to use the native desktop resolution ?