Using The Sdi-100; Locating Rfi - JDS Uniphase HST-3000 User Manual

Chapter 8 Wideband testing
Performing WBTIMS measurements
Using the
SDI-100
Locating RFI The following procedure describes how to use the SDI-100 to
90
The SDI-100 (Spectral Detector and Identifier) is an optional
accessory used to help identify the source of radio frequency
interference (RFI). The SDI-100 can detect signals from
20 kHz to 30 MHz (supports ADSL and VDSL ranges).
The typical use for the SDI-100 is to troubleshoot anomalies
such as excessive impulse noise on the copper loop, large
noise spikes on a spectral graph, and DSL errors impacting
performance.
Before running any tests, verify that you have HST software
version 6.34.03 or higher (System>Tools>Options/Revs/
Copyright).
locate radio frequency interference.
To use the SDI-100 to identify the source of RFI
1 Select the Spectral test and then choose a span.
Service
ADSL
ADSL2
VDSL
VDSL2
2 Press the Actions soft key, and then set the termination
to 100 ohms.
3 Press the Configure key, and then set the Averages
setting to 1.
This is the number of measurements to use for calculating
the average. If set to a low number, the spectral measure-
ments may look slightly erratic, because one measure-
ment may be slightly higher or lower than the next. So, if
you set this to a higher number, the measurement
HST-3000 Copper Testing User's Guide
Bandwidth/Span
20kHz – 1.1MHz
20kHz – 7.5MHz
20kHz – 17.3MHz
20kHz – 30MHz