Quantum Data 780B, User Manual

Page: 107 / 224

780B Video Generator/Analyzer
– User Guide
Page 106
December 1, 2014 Revision A7
6.5
Testing an HDMI Source’s Response to an EDID
The 780B HDMI IN port emulates an HDMI sink device. Part of that emulation function is presenting an EDID to
a source when a sink device is powered and hot plug is asserted. The 780B is provisioned with a default EDID
from the factory. There are two standard EDIDs available with the 780B as provided: 1) Standard HDTV EDID,
2) Standard A/V Receiver EDID.
However you can reprovision the EDID by connecting it to a sink device whose EDID you would like to use for
testing. The 780B can store multiple EDIDs. These EDIDs can be obtained either by extracting them from an
HDMI sink device (e.g. HDTV or AVR) or by importing EDID .xml files created using Quantum Data EDID Editor
tools. For procedures on importing EDIDs refer to
Adding Reference EDIDs for Use in Testing HDMI Devices .
The EDID test of an HDMI source device enables you to see how a source device responds to a specific EDID
or a series of EDIDs. The EDID could be a known good EDID or an EDID you have chosen specifically for
testing purposes.
6.5.1 Configurations for Testing an HDMI Source Devices Response to an EDID
You can run this test in three configurations: 1) with your source device connected directly to the 780B, 2) with
your source device connected to the 780B
through a repeater device, 3) with a repeater device’s input and
output connected to the 780B’s HDMI Input and Output ports. In the first two cases the 780B is emulating an
HDMI sink to test an upstream source. In the third case the780B is emulating both and HDMI source and sink.
These configurations are shown below.