Teledyne-lecroy QPHY-SATA Manuel d'utilisateur télécharger pdf (Page 25)

QPHY-SATA Software Option

915745 Rev G 25

Save Waveforms

Used to select whether or not acquired waveforms should be saved as trace (*.trc) files. The path for storing the

waveforms is specified separately. The default value is Yes.

Stop On Test to review results

When set to Yes, the script will stop after each test to allow for result reviewing. The setup will be saved so that

oscilloscope settings can be modified by the user. On resume, the setup will be recalled.

Test Mode

Used to select whether to run the tests with newly acquired data or use previously saved data. If set to Acquire

New Data, QualiPHY will prompt the user to connect the product and produce the necessary test patterns. If set

to Use Saved Data, QualiPHY will load the waveforms specified in the Waveform Folder and Filenames

variables. The default value is Acquire New Data.

Waveform Folder

Used to specify the path on the oscilloscope to save/recall waveforms. All waveforms will be saved/recalled to a

subfolder in this folder based on the value entered for Device Under Test. When the Test Mode is set to Acquire

New Data and Save Waveforms is enabled, the waveforms will be saved in this folder on the oscilloscope. When

set to Use Saved Data, all the saved waveforms should be in this folder. The default value is

D:\Waveforms\SATA.

Gen1 PLL Natural Frequency

Gen2 PLL Natural Frequency

Gen3 PLL Natural Frequency

These variables control the natural frequency of the PLL used to recover the clock for jitter measurements at

Gen1, Gen2 and Gen3 data rates. Setting this value incorrectly results in a different PLL bandwidth and will affect

the jitter results. To tune the clock recovery to the precise response dictated by the Jitter Transfer Function in the

SATA specification, follow the calibration procedure for jitter measurement devices. The default value is 4.2e6 for

Gen1 and Gen2 and 7.6e6 for Gen3.

Filenames

This group contains variables that allow the user to specify trace (.trc) files to be used to run tests on previously

acquired data. If a parameter is left empty the tests requiring that pattern will be skipped. It is only necessary to

set these filenames when Test Mode is set to Use Saved Data. The specified files must be available in a

subfolder of the folder Waveform Folder; the subfolder name must match the Device Under Test name entered

at the start of the session. The value does not include the “.trc” extension. When re-running a test using saved

waveforms it is best to use the waveforms that were saved by QualiPHY so that the acquisition settings will be as

expected.

PeRT3 Setup Variables

PeRT3 Hostname or IP Address

This variable allows the user to specify the host to which the PeRT

is connected via USB. By default the PeRT

should be connected to the oscilloscope, so the default value is localhost.

PeRT3 SSC Enabled

This variable allows the user to enable SSC on the PeRT

. The default value is No.

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Teledyne-lecroy QPHY-SATA Manuel d'utilisateur Page 25

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