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How to modify VOA value in order to clean the alarm for input power High in OH20H board?

Created: Sep 16, 2021 15:48:32Latest reply: Sep 17, 2021 01:28:20 281 2 0 0 0
  Rewarded HiCoins: 0 (problem resolved)


Hello,


Can you please help to find related documentation for this issue?


I want to modify VOA value in order to clean the alarm for input power High in OH20H board for OSC in OH20H .

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After some investigation, alarm is related to OSC FD port on OH20H.  if I’m not mistaken on BD1 and BD2 have VOA

The actual input value for FD port is -8.7dB and threshold value is -10dB .


Thank you for your time!


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liqiang185
Admin Created Sep 17, 2021 01:28:20

Dear friend!

As shown in the screenshot, the input optical power of the FD module is too high. You need to adjust the optical power of the RX of the FD.

OSC Optical Power Gear:

Gear 0(V-O-A=0dB), Gear 1(V-O-A=3dB), Gear 2(V-O-A=6dB), Default Gear

Default: Gear 0(V-O-A=0dB)

This parameter is supported when the G3OH20H board is interconnected with the G2AST4 board configured with the OSC module (not the single-fiber bidirectional module). 

If your OH20H board is not interconnected with the G2AST4, this parameter cannot be adjusted. So you can try adding a fixed optical attenuator outside.

Thanks!

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All Answers

Dear friend!

As shown in the screenshot, the input optical power of the FD module is too high. You need to adjust the optical power of the RX of the FD.

OSC Optical Power Gear:

Gear 0(VOA=0dB), Gear 1(VOA=3dB), Gear 2(VOA=6dB), Default Gear

Default: Gear 0(VOA=0dB)

This parameter is supported when the G3OH20H board is interconnected with the G2AST4 board configured with the OSC module (not the single-fiber bidirectional module). 

If your OH20H board is not interconnected with the G2AST4, this parameter cannot be adjusted. So you can try adding a fixed optical attenuator outside.

Thanks!

View more
  • x
  • convention:

Dear friend!

As shown in the screenshot, the input optical power of the FD module is too high. You need to adjust the optical power of the RX of the FD.

OSC Optical Power Gear:

Gear 0(V-O-A=0dB), Gear 1(V-O-A=3dB), Gear 2(V-O-A=6dB), Default Gear

Default: Gear 0(V-O-A=0dB)

This parameter is supported when the G3OH20H board is interconnected with the G2AST4 board configured with the OSC module (not the single-fiber bidirectional module). 

If your OH20H board is not interconnected with the G2AST4, this parameter cannot be adjusted. So you can try adding a fixed optical attenuator outside.

Thanks!

View more
  • x
  • convention:

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