802BT/802R Video Test Generator User Guide 169
4. Using the Image knob, select the ON setting to enable analyzer images.
5. Using the Format knob, select the Auto Based On field.
6. Using the Image knob, select CURRENT in the highlighted field to measure the
HDMI/DVI signal originating internally from the generator.
7. Press and release the Step key to save the currently displayed parameters.
The light on the Step key extinguishes, and the new settings are implemented for
analyzer mode operation.
To configure the analyzer to emulate the EDID structure of a display:
1. Determine the HDMI/DVI display you wish to emulate and if possible obtain a text file
of its EDID.
Note: This can be obtained from the manufacturer or by reading the EDID using the
HDMI/DVI generator. For procedures on reading the EDID of a display with the
generator, please refer to “Viewing EDID from a display” on page 171.
2. Connect an HDMI/DVI cable between the HDMI/DVI Tx and Rx connectors on the
generator.
3. Using a terminal emulator, establish a terminal session with the generator (see page
14).
4. Modify the EDID structure in the generator using the XDID and DIDU commands.
For example, to change the color characteristics of the EDID structure (a total of 10
bytes starting at byte 19), you could use the following command strings:
XDID 19 A E88A82A0564796240F48
DIDU
To program multiple segments (or the entire EDID structure) at once, create a text file
containing the EDID. Then send the text file to the generator using your terminal
emulator’s file transfer feature.
The following commands write the entire EDID block 0:
XDID 0 80 00FFFFFFFFFFFF005A63118F01010101130D010380221B782A4706A55C47
9C251E4F54BFEF008180310A010101010101010101010101302A009851002A40307013
00520E1100001E000000FF004132333033313931353335390A000000FD00324B1E530E
000A202020202020000000FC0056583730302D330A20202020200095
DIDU
5. To verify the EDID structure, use the EDID? query. This command will display the entire
EDID structure in ASCII hex format.
To view a specific segment of EDID, use the I2CR? query. This command will display
the requested EDID in ASCII hex format.
6. If desired, use the STRG command to stretch the SCL low signal for 5 ms in the
analyzer’s receiver.