HP 54750A, User Manual, Page: 130 / 478

Eye , Mask and Eyeline Mode Measurement T utorials
Making Eyeline Measurements
(HP 83480A Option 001 only)
4
UTILITY
5
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SYSTEM CONFIG
If the status menu shows Eyeline under the application listing, the
program is loaded and running in memory .
When performing a mask alignment on an eyeline display , you must wait
until enough traces have been obtained to allow accurate determination of
the one level, zero level and crossing point. If you try to align the mask
before sucient data has been obtained, the mask will not align properly .
In many instances , it is preferable to switch to the \eye" display mode to
perform mask alignment.
On some instrument rmware versions , if you try to activate an eye
parameter measurement, such as extinction ratio , without rst turning on
color grading, the instrument asks if you want to turn color grading on. A
menu with two keys ,
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CONTINUE and
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CANCEL , is displayed. When you are
running the eyeline program, these functions are not active . T o get out of
this state , without cycling power , press:
4 Shift 5 4 Lo cal 5
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CONTINUE or
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CANCEL
The program then continues normally . If you run into other situations
where the program appears to stall, try this same solution.
T o install the eyeline software , do the following:
1. Insert the eyeline disk into the disk drive and press:
4
Application
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INSTALL APPLICATION
The software takes a couple of minutes to load.
2. A djust the trigger , if necessary , to obtain a display on the screen.
3. T o begin the program, press:
4 Application 5
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