Agilent Technologies 85032B/E 50 Specifiche Pagina 97

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Adjustments 8712ET/ES and 8714ET/ES
Correction Constants (CCs) Storage RF Network Analyzers
2-4 Service Guide
Correction Constants (CCs) Storage
During normal operation, the network analyzer uses correction constants that are stored
in the RAM buffer. When the analyzer's line power is switched on, the analyzer copies the
current correction constants from the CPU EPROM into the RAM buffer.
During the adjustment tests, the analyzer generates correction constants and saves them
to the RAM buffer only. If the power is switched off without performing the steps below, the
newly generated correction constants will be lost.
To transfer the newly generated correction constants from the RAM buffer to the CPU
EPROM, press the following keys:
.
To make a backup copy of the correction constants to a 3.5" disk, perform the following
steps:
1. Insert a formatted 3.5" disk into the analyzer’s internal disk drive.
2. Press . This
creates a file (or writes over an existing file) where the correction constants are stored.
This file allows you to quickly restore the adjustment data if you replace the CPU
board.
When performing the adjustment procedures, it is beneficial to store the correction
constants to the 3.5" disk. This allows you to restore data quickly in case you need to
switch off the analyzer's line power before completing the adjustments.
CAUTION If the analyzer's line power is switched off at any time during the
adjustments, you must reload the previously stored correction constants (if
they have been saved to disk) before proceeding. Failure to do so will result in
the loss of previously performed adjustment data at the time of the next
correction constant data save. The adjustments will have to be performed
again.
If the correction constants were never saved to disk, the adjustments will
have to be performed again as well.
SYSTEM OPTIONS
Service
Update Corr Const
Store CC to EPROM
SYSTEM OPTIONS
Service
Update Corr Const
Store CC to Disk
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