150-319-205-05, Issue 5
Product Overview
ELU-319 List 5E and List 6E
January 26, 2000
3
Applications without HiGain Doublers
This section addresses ELU-319 List 5E and List 6E operation when used without doublers. For applications
without doublers, the ELU-319 List 5E and List 6E is directly connected to the ERU by the two HDSL cable pairs.
ELU-319 List 5E and List 6E is compatible with all HiGain ERUs.
Applications with HiGain Doublers
For doubler applications, one to three doublers may be used in the HDSL loops between the ELU and ERU.
The ELU-319 List 5E and List 6E can power three doublers and a remote unit (ERU-412 List 1E and List 2E) for
a total of four spans.
These extended ranges are only available when using the EDU-409 micro-doubler with the
ERU-412 List 1E and 2E. Older doublers (EDU-451) cannot be used in circuits with more than
two doublers in any line or local power system.
For additional information on the associated HiGain plugs, refer to the respective technical
practice.
For compatibility guidelines on mixing newer doublers with older ERU and ELU models, refer
to
“HiGain Doubler Circuit Deployment” on page 5
.
