Troubleshooting: Fiber Optics - Revision history

Amnamyst: /* Instructions for Reseating Cables */

2021-12-13T14:04:46Z

Instructions for Reseating Cables

← Older revision		Revision as of 10:04, 13 December 2021
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	# Firmly but gently reinsert the cable fully and reinsert the cable tray, ensuring the cable is firmly seated and the cable tray is locked in. There are two data cables, so be sure to insert the left cable back into the left slot and the right cable into the right slot. They are currently unlabeled, but the left one has a bit of tape on it.		# Firmly but gently reinsert the cable fully and reinsert the cable tray, ensuring the cable is firmly seated and the cable tray is locked in. There are two data cables, so be sure to insert the left cable back into the left slot and the right cable into the right slot. They are currently unlabeled, but the left one has a bit of tape on it.

	''Note: The light next to the fiber optic cable will be illuminated if it is connected correctly.''		''Note: The blue light next to the fiber optic cable will be illuminated if it is connected correctly.''

	<gallery widths=250px heights=250px>		<gallery widths=250px heights=250px>

Amnamyst at 18:18, 10 December 2021

2021-12-10T18:18:44Z

← Older revision		Revision as of 14:18, 10 December 2021
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	# Extend the cable tray.		# Extend the cable tray.
	# Optional: remove the cable and polish the ends, however this is not necessary on a frequent basis.		# Optional: remove the cable and polish the ends, however this is not necessary on a frequent basis.
	# Firmly but gently reinsert the cable fully and reinsert the cable tray, ensuring the cable is firmly seated and the cable tray is locked in.		# Firmly but gently reinsert the cable fully and reinsert the cable tray, ensuring the cable is firmly seated and the cable tray is locked in. There are two data cables, so be sure to insert the left cable back into the left slot and the right cable into the right slot. They are currently unlabeled, but the left one has a bit of tape on it.

	''Note: The light next to the fiber optic cable will be illuminated if it is connected correctly.''		''Note: The light next to the fiber optic cable will be illuminated if it is connected correctly.''

Amnamyst: Added Example Pictures for Instructions

2021-12-10T18:14:43Z

Added Example Pictures for Instructions

← Older revision		Revision as of 14:14, 10 December 2021
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	== Introduction to Layout ==		== Introduction to Layout ==
	The fiber optic cables transmit timing and location data back to the rack. Therefore there are two connection points:		The fiber optic cables transmit timing and location data back to the electronics rack. Therefore there are two connection points:
	# The headbox in the MSR		# The headbox in the MSR
			# The electronics rack (or affectionately, just "the rack")
	# The rack

	The headbox is often the source of the issues, as it is interacted with more frequently than the rack. However, if you have already confirmed that the fiber optic cables have been reseated properly and data is still being lost after rebooting the rack, check the connection at the rack.		The headbox is often the source of the issues, as it is interacted with more frequently than the rack. However, if you have already confirmed that the fiber optic cables have been reseated properly and data is still being lost after rebooting the rack, check the connection at the rack.
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	# Firmly but gently reinsert the cable fully and reinsert the cable tray, ensuring the cable is firmly seated and the cable tray is locked in.		# Firmly but gently reinsert the cable fully and reinsert the cable tray, ensuring the cable is firmly seated and the cable tray is locked in.
	''Note: The light next to the fiber optic cable will be illuminated if it is connected correctly.''		''Note: The light next to the fiber optic cable will be illuminated if it is connected correctly.''

			<gallery widths=250px heights=250px>
			Headbox FiberOpticCables Inserted.jpg\|Headbox Connection <br> (Inserted Fully)</br>
			Headbox FiberOpticCables TrayExtended.jpg\|Headbox Connection <br> (Tray Extended)</br>
			Rack ClockFOconnection.jpg \| Clock FO cable connection <br> (Note: Single cable)</br>
			Rack DataFOconnection.jpg\| Data FO cable connection <br> (Note: Two cables, bundled)</br>
			</gallery>

	== Rebooting the Rack ==		== Rebooting the Rack ==

Amnamyst at 17:31, 10 December 2021

2021-12-10T17:31:50Z

← Older revision		Revision as of 13:31, 10 December 2021
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	== Rebooting the Rack ==		== Rebooting the Rack ==

	# Shut off the rack via the black button in the top right corner of the rack.		# Shut off the rack via the round black button in the top right corner of the rack.
	# Turn off the HLU power switch.		# Turn off the HLU power switch.
	# Turn on the rack and wait for the lights to stop flashing.		# Turn on the rack and wait for the lights to stop flashing.
	# Turn the HLU power switch on.		# Turn the HLU power switch on.

			<gallery widths=250px heights=250px>
			Rack PowerSwitch.jpg\|Electronics rack power switch<br>(upper right corner)</br>
			HLU PowerSwitch.jpg\|HLU power switch<br> (rocker switch) </br>
			</gallery>

	Then, ''ping eeg'' again to confirm success. Repeat the reseating procedure as needed. As noted above, if you are confident with the connection in the MSR, check the connection at the box.		Then, ''ping eeg'' again to confirm success. Repeat the reseating procedure as needed. As noted above, if you are confident with the connection in the MSR, check the connection at the box.

Amnamyst: Updated Instructions

2021-12-10T17:14:32Z

Updated Instructions

← Older revision		Revision as of 13:14, 10 December 2021
Line 1:		Line 1:
	''Note: These are internal instructions for MEG Core Staff. If you are not MEG Core staff, you are welcome to educate yourself, but please do not attempt without supervision or direct instruction.''		''Note: These are internal instructions for MEG Core Staff. If you are not MEG Core staff, you are welcome to educate yourself, but please do not attempt without supervision or direct instruction.''

			== Introduction to Layout ==
			The fiber optic cables transmit timing and location data back to the rack. Therefore there are two connection points:
			# The headbox in the MSR
			# The rack

			The headbox is often the source of the issues, as it is interacted with more frequently than the rack. However, if you have already confirmed that the fiber optic cables have been reseated properly and data is still being lost after rebooting the rack, check the connection at the rack.

			== Instructions for Reseating Cables ==
			First, ''ping eeg'' from the ACQ computer to confirm data is not being fully transmitted. If packets are being lost:
			# Extend the cable tray.
			# Optional: remove the cable and polish the ends, however this is not necessary on a frequent basis.
			# Firmly but gently reinsert the cable fully and reinsert the cable tray, ensuring the cable is firmly seated and the cable tray is locked in.
			''Note: The light next to the fiber optic cable will be illuminated if it is connected correctly.''

			== Rebooting the Rack ==

			# Shut off the rack via the black button in the top right corner of the rack.
			# Turn off the HLU power switch.
			# Turn on the rack and wait for the lights to stop flashing.
			# Turn the HLU power switch on.

			Then, ''ping eeg'' again to confirm success. Repeat the reseating procedure as needed. As noted above, if you are confident with the connection in the MSR, check the connection at the box.

Amnamyst: Creating Fiber Optic Page

2021-12-10T15:02:52Z

Creating Fiber Optic Page

New page

''Note: These are internal instructions for MEG Core Staff. If you are not MEG Core staff, you are welcome to educate yourself, but please do not attempt without supervision or direct instruction.''