CRT:Diamondtron SB VSync & HSync Unlocking Guide

Overclocking Tutorial

Diamondtron HSync & VSync Unlocking Tutorial (NOTE: Only works on 22" SB monitors):

Turn off the monitor.
Turn on the monitor while holding the EXIT button until you see a raster image then release and press EXIT again and you will see the FACT DATA menu.
Press the (-) button once to set the data value to 255 then press the (+) button to set the data value to 5 then press the SELECT button.
Navigate to the right in the OSD menu until you find the FACT DATA menu again.
Press the (+) button until the DATA value is set to 99 then press the SELECT button.
Press either the (◀) or (▶) buttons and you will be introduced to the FACT DATA-E2P menu.
Cycle through ADDR to change DATA values:
Change DATA Decimal in ADDR 004 to adjust the HSync Minimum +1 (31 is 30KHz)
Change DATA Decimal in ADDR 005 to adjust the HSync Maximum +1 (141 is 140KHz)
Change DATA Decimal in ADDR 006 to adjust the VSync Minimum +1 (49 is 48Hz)
Change DATA Decimal in ADDR 007 to adjust the VSync Maximum +1 (161 is 160Hz)
Press the EXIT button after each ADDR modification to save each address value then enter the FACT DATA-E2P menu again to change other ADDR values.
Exit the OSD.

This tutorial only applies for 22" Diamondtron SB monitors (and their rebadges) such as the 230SB and 2070SB.

The maximum known limit for the VSync and HSync are 254Hz and 152Khz respectively.