YBA250 Antenna and Transmission Line Analyzer User Manual

Appendix G: Customizing the Channel
Table
This appendix describes how to modify the Channel Table to meet
your testing needs.
Customizing the Channel Table
The Channel Table is a file used by the YBA250 to specify the
characteristics of the channels assigned to a signal standard. You can
customize the Channel Table to suit the specific needs of your
system. For example, if you have set the bandwidth of your channels
to be wider than the standard bandwidth, you can specify the wider
bandwidth in a customized Channel Table. If your system’s channel
bandwidth is non-standard and the YBA250 is using the standard
Channel Table, the test frequency range based on the standard
channel bandwidth will not be accurate for your system.
The YBA250 looks for a file named UserStandards.txt in the
\BuiltInDisk folder when it starts up. If it does not find the file, the
YBT250 then looks for the standard channel table file, SignalStandards.txt,
in the NetTekApps\YBA250 folder. If that file is not found,
a dialog box will be displayed informing you that no standards file
was found, so a new channel table will be generated using internal
default values.
Creating a Custom Channel Table
To create a custom channel table:
1. Locate the existing SignalStandards.txt file in either the
\BuiltInDisk\NetTekApps\YBA250 folder or
\NetTekApps\YBA250 folder (only if the application software
loaded into volatile memory instead of flash memory).
2. Copy the SignalStandards.txt file to the \BuiltInDisk folder.
The YBA250 will look only in the \BuiltInDisk folder for a
custom channel table.
YBA250 Antenna and Transmission Line Analyzer User Manual G-1