View Edid Header; Delete Edid From Memory; Download Edid Content - Lightware DA2DVI-HDCP-Pro User Manual

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6. Programmer's Reference
Legend:
<type> Description
U User saved EDIDs
D Dynamic EDIDs
E Emulated EDIDs
Each number represents the EDID validity state for the
corresponding memory location.
INFO: If a changed EDID is queried by the {WH} command (see the next section), its value returns to '1'.
The status of a deleted EDID returns to '0' after query.
6.4.4. View EDID Header
Description: Shows basic information about EDIDs in the memory.
Format
Command {WH<loc>}
Response (EH#<loc>●<EDID_HEADER>)CrLf
Explanation: Shows the EDID from U14 memory slot which is the EDID saved by the user to the location 14.
<loc>
Fxx Factory EDID query
Uxx
Dxx Dynamic EDID query
Exx Emulated EDID query
F* All Factory preset EDIDs
U* All User saved EDIDs
D* All Dynamic EDIDs
E* All Emulated EDIDs
Legend: Depending on <loc> the query can be for one EDID or all EDID in the block.
<EDID_HEADER> consists of 3 fields separated by spaces:
<loc>
PNPID code
Preferred resolution
Name
The <EDID_HEADER> is '-' for invalid EDIDs.
Response length Value Description
48 '0' invalid EDID
2 '1' valid EDID
1 '2' deleted EDID
'3' changed EDID
'4' empty EDID slot
Example
→ {whu14}
← (EH#U14 NEC 1280x1024@60
LCD1970NXp)
Result Response
User EDID query
header for one EDID
headers for all Factory EDIDs
headers for 50 user EDIDs
headers from all outputs (frame size)
headers from all inputs (frame size)
Result
The three letter abbreviation of the manufacturer
The resolution and refresh rate stored in the preferred detailed
timing block.
The name of the display device stored in product descriptor.
DA2DVI-HDCP-Pro – User's Manual
6.4.5. Delete EDID from Memory
Description: Clear EDID from memory location <loc>.
Format
Command {DE<loc>}
Response (DE_OK)CrLf
(E_S_C)CrLf
Explanation: All user EDIDs are cleared from memory.
Legend: Depending on <loc>, one EDID or all EDIDs in a block can be cleared.
<loc>
Fxx Not valid! Factory EDID cannot be deleted. No response.
Uxx Specified User EDID is deleted.
Specified Dynamic EDID is deleted. It will be empty until a new monitor
Dxx
is connected.
Exx Specified Emulated EDID cleared. By default F49 EDID is copied to it.
F* Not valid! Factory EDID cannot be deleted. No response.
U* All User EDIDs are deleted.
All Dynamic EDIDs are deleted. They will be empty until a new monitor
D*
is connected.
E* All Emulated EDIDs are cleared. By default F49 EDID is copied to them.
6.4.6. Download EDID Content
Description: EDID hex bytes can be read directly. The router will issue the whole content of the EDID present
on memory location <loc> (256 bytes).
Format
Command {WE<loc>}
Response (EB#<loc>●<B1> ●<B2>●..●<B256>)CrLf
Legend: <B1>..<B256> are space separated hex characters represented in ASCII format.
Explanation: Full EDID from memory location F1 is downloaded.
21
Example
→ {deu*}
(DE_OK)
←
E_S_C)
←
Result
Example
→ {wef1}
← (EB#F1 00 FF FF FF FF FF FF 00 32 F2 00
00 00 .. .. .. 00 00)