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720 DSP Operation Manual
Business Services Meter
Forward Spectrum Analysis
This feature enables the 720 DSP to view raw forward spectrum traces from 50 to 1000
MHz with DSP spectrum snapshots to give the user your downstream channels.
Upstream Linear Distortions Measurement
The UP-LD feature enables the 720 DSP to view the pre-equalization of the upstream
channel, along with the in-channel frequency response and group delay to determine if
equalization is hiding potential problems within the upstream.
Analog & Digital HUM Measurement
This feature enables the 720 DSP to measure the amplitude of the 50/60 Hz, 100/120
Hz, and low frequency interference (HUM) present on the video/QAM carrier of a single
selected analog or digital channel.
Optional Features
The following optional features are available for the 720 DSP.
Bluetooth Communications Adapter
This is a software and hardware option package that is used to connect the 720 DSP
to an iPad via Bluetooth for remote control of the meter during operation. This package
includes a software activation key for the BCA option on the 720 DSP and a Class II
Mini Bluetooth Adapter (v2.1) with a 10 meter range for speeds up to 3 Mbps. This
option is compatible with the iPad and iPhones that have device tethering enabled by
the service provider.
QAM Error Vector Spectrum Analysis
When activated in a 720 DSP, this feature provides users not only the ability to tune the
meter to a downstream QAM channel and display its Error Vector Spectrum (EVS), to
reveal noise and ingress that may be present under the QAM channel but also provides
a method for troubleshooting upstream ingress and noise problems within active
channel bands by seeing the ingress that is present “underneath” an upstream cable
modem channel, or any bursty signal.
Source Generator
This feature enables the 720 DSP to generate either a continuous wave (CW) or
16/32/64/128/256 QAM signal with adjustable frequency, and modulation in the return
path from 5 to 85 MHz.
Summary of Contents for 720 DSP
Page 23: ...www trilithic com 720 DSP Business Certification Meter Section I The Basics ...
Page 79: ...www trilithic com 720 DSP Business Certification Meter Section II Setup Menu ...
Page 199: ...www trilithic com 720 DSP Business Certification Meter Section III Autotest Menu ...
Page 221: ...www trilithic com 720 DSP Business Certification Meter Section IV Troubleshoot Menu ...
Page 413: ...www trilithic com 720 DSP Business Certification Meter Section V Utility Menu ...
Page 429: ...www trilithic com 720 DSP Business Certification Meter Section VI Appendix ...
Page 440: ...9710 Park Davis Drive Indianapolis IN 46235 317 895 3600 www trilithic com Made in U S A ...