Technical data

22 U4154A Logic Analyzer Service Guide
3 Testing U4154A Performance
sample of channels is tested. The calibration laboratory may
choose to elaborate on these tests and test all channels at
their discretion.
Eye Scan is used to adjust the sampling position on every
channel. Eye scan must be used to achieve maximum state
data rate performance.
The 2.5 Gb/s state logic analyzer will be tested. All eight
pods will be tested, one pod at a time.
The logic analyzer acquires data on both edges of the clock,
so the test frequency is set to half of the acquisition speed.
One-card Module
To perform a complete test on a one- card module, start at
the beginning of the chapter and follow each procedure.
Multi-card Module
To perform a complete test on a multi- card module, perform
the self- tests with the cards connected. Then, remove the
multi- card module from the chassis and configure each card
as a one- card module. Install the one- card modules into the
chassis and perform the performance verification tests on
each card. When the tests are complete, remove the one- card
modules, reconfigure them into their original multi- card
module configuration, reinstall into the chassis and perform
the self- tests again. These steps are necessary to ensure that
the clocks are tested on each module.
Instructions for removing and installing the module can be
found in the installation guide for the chassis or the U4154A
module.
If you don’t have the installation guide for your U4154A
module, you can find the latest version on the Internet at
www.agilent.com.
Test Interval
Test the performance of the U4154A module against its
specifications at two- year intervals.
NOTE
A U4154A module that is licensed with the -01G option needs to be tested
at an Agilent Service Center. The Service Center has the capability to test
the module at up to the 2.5Gb/s state speed to ensure that the calibration
will remain valid even after upgrading it to the -02G license.