Advertisement
Troubleshooting
Low PHY Rates
If the PHY rate is low, check the following:
1
Make sure to wait at least 30 seconds after link is achieved to check the PHY rate.
2
Check the path loss shown on MoCA SUMMARY PG 2B (see Node Statistics (on
page 9)). If any path losses are greater than 50 dB, connect a level meter to the
coaxial cable and measure the level of the highest channel on the system (channel
158). If the level is below the specified minimum, correct the home wiring.
3
Check for a home amplifier between MoCA devices (see MoCA Path Through
Amplifier (on page 13)). If present, implement one of the recommended
solutions.
4
Daisy chained splitters—Check if any splitter feeds a single MoCA device as
opposed to multiple devices. If possible, remove the splitter and connect both
devices at the next upstream splitter. Otherwise, verify that the splitter is rated
for at least 1000 MHz. If not, replace the splitter.
5
Long cable runs—Check if any MoCA devices have cable runs longer than 300
feet between two MoCA devices. If possible, reduce the cable length. If RG-59
cable is used, replace with RG-6.
Note: For a comparison of the relative signal loss characteristics between RG-59
and RG-6, see Appendix B (on page 22).
6
Coaxial Surge Arrestors—Check for a coaxial surge arrestor on the cable feeding
the set-top, and remove if present.
Note: See Appendix B (on page 22) for information on MoCA PHY rates vs.
receiver sensitivity.
High Path Loss
See Low PHY Rates (on this page), steps 3–6.
18
TP-00116-01
Hide quick links:
Advertisement
