
Performance Checks 8712ET/ES and 8714ET/ES
Performance Test Software RF Network Analyzers
1-18 Service Guide
The current DUT file suffix (1). This file, “CurEDUTx,” contains the test-result data
of the current device under test. Up to ten different file names can be specified. This allows
multiple users to operate from one system storage medium, such as an SRM environment.
This entry can be ignored for single-user applications.
Config file and cal data generation.
1. Once all desired changes have been made, the program will ask if you want to store the
data just entered. A specific 4-character file name suffix can be provided if more than
one configuration is required. Leaving the file name blank will result in the default file
name of “Cfg_dflt.” If the program finds only one config file, that file will be loaded
automatically. If more than one is discovered, the program will list the file names found
and allow you to choose one. At this point the program will also ask you if a hardcopy
printout is desired.
2. After the config file has been generated, the proper data files containing the correction
values must be generated. Press . You will be shown a list
including:
• 3 sensors
• an external 110 dB step attenuator
• two 20 dB attenuators (pads)
You will need to enter the correction data for every piece of test equipment included in
this list that you will be using to test the analyzer. Select the desired item.
Sensors. All sensors require both frequency and cal factor data. Frequencies must always
be in MHz and cal factors in percent. The first entry requested will be the last four digits of
the serial number. The computer will search for a current configuration file containing this
information. If one is present, the program will query you to either view or edit the old
values.
Assuming you are editing the data, the 50 MHz reference cal factor will be requested next.
This value must use percent as its units and be within the range of 50 and 150 percent.
After the cal factor is entered, the program will request that all frequency/cal factor pairs
be entered. Any frequency entered must be greater than zero. You must start with the
lowest frequency for which you have data and sequentially enter higher frequencies until
done. Each entry must consist of both a frequency in MHz and the cal factor in percent,
separated by a comma (e.g. 500, 98.6). Each frequency entered must be higher than the
previous entry. These cal factor values must be between 75 and 125 percent.
TIP If a mistake is made, you can back up one entry and re-enter a value by
entering a negative frequency. If you accidentally enter only the frequency
(instead of a frequency/cal factor pair), the computer will wait for the cal
factor to be entered; however the only prompt will be a “?”.
Each entry is shown on the CRT. When all entries are completed, enter “0,0” to exit the
data entry portion of the program. At this point the program will redisplay all of the values
entered and ask if you want to store them. (Check to make sure there are no entries for a
zero value frequency.)
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