Model Two & Model Two Lite - Operation Manual
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6.
Advanced Operation
6
Once you have a general understanding of the Model Two’s basic features, you can try the
advanced features, such as testing for transmission characteristics, auto-testing, saving data, and
printing reports.
Transmission Characteristic Test
The Model Two enables you to test the transmission characteristics (gain and tilt) of your CATV
distribution system. Maintaining proper gain and tilt is a necessary step in ensuring the quality of
signals delivered to your customers.
The Model Two enables you to do this by setting a reference at a known good test point such as
the headend’s output test point or a node’s output test point. This reference can then be compared
to the transmission response at other places in the distribution system to allow proper gain and tilt
adjustments of the distribution system.
To test the transmission characteristics, you first need to enable the Transmission option.
From Spectrum mode, the Measurements Setup menu, including Transmission, can be accessed
quickly with Fast Setup by pressing
SET
once. With Transmission selected, press
F1
to switch
from OFF to ON.
The Model Two asks if you want to replace the zero reference data.
Note:
The first time you use the Model Two, you should press
F1
to
replace the initial Zero Reference data.
To replace the zero reference data, press
F1
(YES). To use the existing Zero Reference level,
press
F2
(NO). You can exit this screen by pressing
F3
(ESCAPE).
