CANOGA PERKINS 8829 UTP-to-Fiber Optic Media Converter - Manual (Page 24)

Canoga Perkins 8829 Media Converter
24
lay Specification will be exceeded. This will cause
devices to time out and hidden collisions will oc-
cur. Normally, the use of the 8829 Media Con-
verter with a laser interface in HI OPT PWR mode
is only recommended for Full-Duplex applications
over long distances (up to 40km).
Keeping this in mind, the recommended setting is
LO OPT PWR and, prior to installation, verify that
the proposed application will not exceed the IEEE
802.3 Propagation Delay Budget (48
µ s total Round
Trip Delay) for Half-Duplex (CSMA/CD) applica-
tions. For Low Power, the minimum budget is 14dB
for the standard version and 16dB for the extended
version.
When working out the cable and circuit attenua-
tion, the user should allow 0.5dB loss per connec-
tor for all devices and patch panel connections,
plus 0.5dB loss per km on 8-10/125 micron cable.