910-269-EN, Rev. B, June 2011
90 Chapter 4
4.2 Using the AUTO-XX% Feature
The AUTO-XX% feature was formerly known as the AUTO-80 % in the EPOCH 4
Series. The default setting for AUTO-XX% in the EPOCH
1000 Series is 80 % full-
screen height (FSH). You can adjust the FSH target value (XX) to meet the demands of
the application.
The AUTO-XX% feature is used to quickly adjust the instrument’s gain (dB) setting to
bring the gated peak echo to XX% FSH. AUTO-XX% is especially useful for bringing
the echo from a reference indication to XX% FSH to establish the instrument’s
reference gain level (see section
4.3 on page 91 for further information).
You can use the AUTO-XX% feature to bring an echo to XX% FSH in any gate.
To use AUTO-XX% Feature
1. Press [GATE] to select the gate that measures the echo to be adjusted.
2. Press [2
nd
F], [GATE] (AUTO XX%) to activate AUTO XX% feature.
AUTO-XX% can be activated at any time during operation. If you do not actively
select a gate, AUTO-XX% is applied to the most recently adjusted gate.
AUTO-XX% can be used when an echo exceeds the desired amplitude. The echo
can be either above or below XX% FSH. If a signal is very high in amplitude
(above 500 % FSH), it might be necessary to activate the AUTO-XX% function
more than once.
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