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GRL-PCIE-TX Quick Start/User Guide/MOI
Rev1.0
© PCI-SIG 2022
Version 1.0, Mar 2022. Updated 03.26.2022
Page.
41
7.
When the preset tests have completed, select
Exit
to save the test results.
7.5
System Board Tx Base Jitter (UPW-TJ, UPW-DJDD, UTJ and UDJDD) Test
Note: Make sure to terminate lanes that are not being tested with 50-ohm MMPX terminators.
1.
Set up the test equipment as described in Section 4.2.1.
2.
Adjust the Scope to capture 2M UI
’s
with the following configuration:
•
Bandwidth: 33 GHz
•
Sampling Rate: ≥ 128 GS/s
•
No embedding
3.
Push the compliance toggle on the DUT to transmit 32 GT/s Jitter Measurement pattern
(setting #47 on Lane 0 in the PCIe 5.0 Base Specification and COMPAT on adjacent lanes) by
injecting 1 ms pulse of 100 MHz clock signal into Rx Lane 0.
4.
On the Scope, capture 2.0M UI
’s
and save the captured waveforms to be used for post-
processing.
5.
To measure UPW-TJ, UPW-DJDD, UTJ, and UDJDD, load the saved waveform files in SigTest
Phoenix (by selecting
PCIe
→
5_0
→
Base
→
Browse
→
Load and Verify Data
).