Keysight Technologies 16860 Series, Service Manual

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3 Testing 16860 Performance
46 Keysight 16860 Series Portable Logic Analyzer Service Guide
8 If the analyzer displays an error again, lower the frequency by 1MHz and run again. If the test
does not display an error, increase the frequency by 1 MHz and run again.
9 Continue changing the frequency and running unit the frequency can no longer be increased and
the error message not displayed.
10 Set the generator to the highest frequency that did not cause an error.
11 Click Run Repetitive .
12 Wait for logic analyzer to complete 100 acquisitions at the new pulse generator frequency
without displaying any error. If an error is displayed, decrease the pulse generator frequency by 1
MHz and then again wait for 100 acquisitions at this new frequency without any error. Repeat this
step until you get 100 acquisitions without any error display.
13 Click the Stop toolbar button to stop the data acquisition.
14 Note the generator frequency setting this will be used in the next section to verify the data rate.
Pod 1 Clock - Setup for Maximum Data Rate
To measure the maximum data rate, the starting frequency will be the frequency found in the section
above. A new configuration file will be used that has a marker setup to verify that the data patterns
are correct. To ensure that the data is sampled correctly, the sample position needs to be set. Eye
Scan is used to set the sample points of all the data to the same eye., The following section describes
how to do use Eye Scan to do this. This same process will be used during all the other data
verification steps later in the procedure.
1 Load the
MultipleClocks_WithMarker.ala configuration file. If asked to save the current configuration
file click No .
2 Verify that the Generator is set to the frequency found in the last section as a starting point.
3 Adjust the sample position using the procedure in the following section.
Adjust Sampling Positions using Eye Scan
This Eye Scan procedure will be used before each of the data rate verification steps. This procedure
should be followed any time the setup or frequency is changed.
1 Open the sampling setup window.
2 Select the Eye Scan: Sample Positions and Thresholds... button. The Eye Scan - Sample Positions and
Threshold Settings dialog appears.