DXLink Fiber Input & Output Boards
148
Enova Digital Media Switchers - Hardware Reference Manual
In the following procedure, read each step entirely. The steps include helpful tips to avoid damage to DXLink Fiber
products. We also suggest reading the "Tips for Fiber Optic Connections" on page 140.
Removing/Replacing SFP+ Fiber Optic Transceivers
1.
If applicable – Label and disconnect fiber optic cables (release the locking tab on the cable connector to
disconnect the cable from the transceiver) or remove dust plugs from the transceiver. If cables from adjoining
transceivers or boards obstruct access, label and disconnect them as necessary.
2.
Using the tip of the index finger, swing the transceiver latch out and down. Note that the orientation of DXLink Fiber
Boards varies from system to system (FIG. 62):
3.
Use the handle to release and carefully pull the transceiver completely free from its socket.
4.
Restore the removed transceiver’s latch to an upright position and replace the dust plug that originally shipped with
the transceiver. Place the transceiver in an ESD shielded bag and set aside.
NOTE:
Leave the dust plug in the replacement transceiver for Step 5 to reduce the possibility of damaging the
transceiver / socket.
5.
With the replacement transceiver’s latch in the up (locked) position, gently insert the transceiver straight into the
transceiver socket until resistance is felt (an audible click will be heard when it is fully seated).
6.
Verify proper seating by gently pulling on the transceiver with the latch in the locked position.
7.
Remove the dust plug and save for future use.
8.
Attach the fiber cable (see page 140).
9.
Test the signal path.
DXLink Fiber Troubleshooting
General Signal Problems
May be because of fiber cable quality issues. See page 141.
Audio Problems
Audio not present or intermittent with good video:
A signal containing both video and audio must have space for both signal portions. The audio signal portion lies in the
blanked portion of the video signal. High Bit Rate Audio (HBRA) requires a larger than normal space in the blanked area of
the signal. Video formats with reduced blanking normally provide enough space for audio signals. In a signal that
combines a video format with reduced blanking and HBRA, the HBRA signal is truncated and can present as either no
audio or as problematic audio (static, clicking, absent, etc.). While Enova DGX hardware supports both HBRA and
reduced blanking video formats, these formats do not necessarily work with one another.
To resolve the issue, change either the audio format to non-HBRA or change the video format to a format that does not
use reduced blanking.
Other audio problems:
May be a result of trying to pass Dolby, DTS, or high PCM frequency rates when the destination device does not support
them. Configuring the EDID may help resolve the problem (see page 138).
Video Problems
May be a result of trying to pass a video format that the destination device does not support. Configuring the EDID may
help resolve the problem (see page 138).
Check the Scaling setting on the attached RX unit to ensure it is in either Auto or Manual Mode.
Verify Optical Signal - Multimode Transceivers Only
If you are unsure that a multimode transceiver is passing a signal, hold the unattached end of the fiber optic cable
away
from you
and take a picture of it with a digital camera (or cell phone camera). The image will show a bright light if the
signal is being passed (works on some digital cameras and cell phone cameras).
FIG. 62
Flip transceiver latch out and down, pull transceiver free from socket
