Troubleshooting - Moog FOCAL 914-HDE L1 User Manual

14.0 Troubleshooting

This section contains valuable information that can help users solve common problems while setting up or using a
914-X Series system. The Model 914-X Series Diagnostic GUI is an essential troubleshooting tool. It allows users
to quickly identify problems. Setting up the GUI and connecting it to the console 914-HDE card is a required
first step. Please refer to section 5.0 for Diagnostic GUI installation and operation instructions.
Here are some common problems, and potential solutions:
1. Diagnostic GUI is not connecting to the 914-HDE
a. Check connection status to Header J8 on the console 914-HDE card. Any loose connections? Any
shorts? Verify pinout as per Section 5.0.
b. Verify the COM port used in the GUI, does it match the one connected to the 914-HDE?
c. Is the GUI installed up to date? Check the Focal website and look for 914-0401-00:
http://www.moog.com/products/multiplexers-media-converters/focal-multiplexer-product-
line/multiplexer-technical-documents.html
d. Is the 914-HDE powered up with 5 V or 12 V? Is the power LED D6 lit?
2. The card I want to see in the 914 Diagnostic GUI is not showing up.
a. Press "Stop" and then "Start" at the bottom of the GUI to refresh the displayed cards.
b. Restart the GUI, re-establish the COM port connection.
c. Verify that the cards have compatible firmware versions per Section 0.
d. Verify the optical link in the link tab in the GUI, or by the LEDs on the PCBA.
e. Verify the switch settings of the expansion cards.
f. Verify power status via LEDs.
3. Power issues:
a. Verify that power is only supplied to the 914-HDE motherboard or 914-HDV2 media converter. 914-X
Series Expansion cards draw their power from the 914-HDE motherboard.
b. Verify that the green power LED D6 is lit on the 914-HDE. The power fault LED D5 is lit red during over,
under or reverse voltage events.
c. For larger stacks using more power, voltage drop can occur over the power leads. Verify the power
received at the 914-HDE is greater than 4.5 V. If not:
i. Use heavier gauge wire
ii. Increase voltage: 12 V is best for systems that require > 20 W
iii. Use shorter power leads
d. Verify voltage rails and inputs via the diagnostic GUI.
e. Ensure the power supply is rated for at least 50% more power than required by the 914-X Series
system.
4. Optical issues:
a. Verify received optical power via the GUI in the SFP tab. All values should have green backgrounds to
indicate acceptable levels. The optical loss in each direction should be similar.
b. Refer to Section 10.6 for more details regarding Optical fiber care and maintenance.
c. Too much optical power is a saturation condition. Attenuation is required in the fiber link.
d. Too little optical power could be due to:
i. Dirty fiber contacts and bushings
ii. Bent or broken fibers
iii. Fiber type mismatches
iv. Non-functional 914-HDE at the far side
v. Fiber length is too long
vi. Malfunctioning Fiber Optic Rotary Joint
Focal Technologies Corporation
A Moog Inc. Company
Model 914-X Series Modular Multiplexer System User Manual
Document Number: 914-0601-00 Rev. 5.0
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