Pressing the "TEST" button opens communications with a Guardian 9581
SST™ Reverse Path Analyzer in the hub or headend. Automatic measurements
quickly measure the required upstream transmit level and compute the
Carrier/(Noise + Ingress) ratio for the path between the subscriber and
the 9581 SST. The Trilithic RSVP Reverse Path Tester compares the
results to user-settable limits and in seconds displays a simple,
unambiguous "PASS" or "FAIL."
Only the RSVP / 9581 SST combination provides the ingress
measurement range needed to ensure reliable HSD, VOD and VoIP services
under all conditions. Of all available return path measurement systems,
only the RSVP Reverse Path Tester checks C/(N+I) with the range needed
to ensure trouble-free service. Built-in Test Generator for Identifying
The Trilithic RSVP includes a tone modulated signal source for
identifying cables in MDUs and other installations. Output is settable
in both frequency and level. Fast Return Path Performance Testing
The RSVP Tester performs measurements and analysis in seconds. The
installer simply presses the START button and the RSVP does the rest.
To deliver an unambiguous result, the RSVP Tester also evaluates
upstream level and C/(N+I) measurements against settable limits.
Unmatched Measurement Range
Only the RSVP Reverse Path Tester measures C/(N+I) with enough range
to ensure that every installation will provide trouble-free service
under all conditions.