[Technical Notice] ASRock and MSI Motherboard Issues With GV-Combo B Cards

[alexhon]

Article ID: GV27-12-11-12-t
Released Date: 11/12/2012


Applied to
GV-1120B / 1240B / 1480B Cards

Symptom
Under the following environments, live view and recorded videos from channels 1, 5, 9 and 13 appear choppy at times and are marked by short horizontal lines near moving subjects.

• GV-1120B / 1240B / 1480B Combo Card
• D1 resolution
• ASRock or MSI motherboard with Intel HD Graphics 2000 / 3000

  

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The symptoms described can occur in MSI and ASRock motherboards using the Intel CPU listed below.

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Solution
To avoid the issues, you can replace the Intel Sandy Bridge CPU (HD Graphics 2000 / 3000) with one of the Intel Ivy Bridge CPU (HD Graphics 4000) listed below.

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For MSI motherboards, you can also solve the problems by changing the PCI Latency Timer in BIOS.

1. When the PC is starting up, press the Delete key to access BIOS.
2. Select Settings on the left and select Advanced.

   

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3. Select PCI Subsystem Settings and select PCI Latency Timer.

   

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4. Change PCI Latency Timer from the default 32 PCI Bus Clocks to 64 PCI Bus Clocks.

   

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