LMH0397: Conditions under which video data isn't output

Sadanori Kato

Guru 36540 points

Part Number: LMH0397

Hi,

Suddenly, video data wasn't output when video data was output normally.
What are the possible causes of this symptom?

Best regards,
Kato

over 6 years ago

0 Nasser Mohammadi over 6 years ago

TI__Guru* 93570 points

Hi Kato-San,

1). Please check loss of lock?

2). Is it possible that may be BNC connector is not making a good contact to the pcb? Or there is solder void or cold solder in the high speed signal path?

Regards,, Nasser

0 Sadanori Kato over 6 years ago in reply to Nasser Mohammadi

Guru 36540 points

Hi Nasser-san,

Thank you for your quick response.

The explanation was insufficient. Suddenly video data wasn't output when using LMH0397 with cable driver mode(EQ/CD_SEL is pull up to VIN) in this case.
So, is there anything that might be the cause besides poor connection or bad solder?

Best regards,
Kato

0 Nasser Mohammadi over 6 years ago in reply to Sadanori Kato

TI__Guru* 93570 points

Hi Kato-San,

If we had video going through fine then all of sudden there is no video i would think there could be a lose connection or solder. I cannot think of other reasons.

Regards,, Nasser

0 Sadanori Kato over 6 years ago in reply to Nasser Mohammadi

Guru 36540 points

Hi Nasser-san,

Thank you for your response.

I understand.

Best regards,
Kato

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LMH0397: Conditions under which video data isn't output