SL-889 HDMI 2.1 Cat-3 Cable EMI Tester
User Guide
10
© 2019-2020 Simplay Labs, LLC.,
Simplay-UG-SL889-1.1
All rights reserved. CONFIDENTIAL
2.
The SL-889 in Standard Test Mode
In its standard test configuration, the SL-889 offers audio and video test features to enable radiated emissions
compliance testing to HDMI 2.1 specifications.
These are the operations that are available in the standard test mode:
1.
Generate a calibrated HDMI 2.1 signal output using the HDMI OUT1 port
2.
Receive a HDMI 2.1 signal using the HDMI IN1 port
Calibrated HDMI 2.1 Tx Output Notes:
The SL-889 generates fixed stimulus to an HDMI 2.1 Category 3 Cable so the DUT
cable’s EMC
Emission performance can be measured.
The SL-889 does not go through HDMI 2.1 FRL Link Training, and does not adjust the TX signal in
response to the RX’s measured error rate.
The documentation shipped with each SL-889 contains waveforms captured while it was sending
TMDS data at 2.97 GHz and FRL data at 12.0 GBPS.
A waveform exhibiting a Rising/Falling/Rising pattern (or a Falling/Rising/Falling pattern), with the
time between the first and last edges at a minimum, represents 2 bit times.
The included 12.0 GHz waveform was captured at 200 Picoseconds (ps) per division, with each
division internally subdivided by four tick marks.
Each 1/5
th
of a division is 40 ps.
A 12.5 GBPS signal would result in a bit time of 80 ps.
In the faster waveform the time between the first and last edges of the Rising/Falling/Rising
pattern is slightly more than 4 tick marks (160 ps).
One bit time is half the total time, or slightly more than 80 pS.
