Watch Edid Validity Table; View Edid Header - Lightware DA2DVI-DL User Manual


  
6. Programmer's Reference
6.3.3. Watch EDID Validity Table
Description: Shows EDID validity table, which contains information about the EDID memory states.
Format
Command {WV<type>}
Response (EV<type>●
<VALIDITY_TABLE> )CrLf
Explanation: There is one '1' on the first position of the user EDID table. This means that the location 1 of the
user EDID memory is filled out, the remain ones are empty.
Legend:
<type>
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.
Example
→ {wv*}
(EVU 14444444444444444444444444444)
←
(EVD 10)
←
(EVE 1)
←
Response length
29
2
1
Value Description
'0' invalid EDID
'1' valid EDID
'2' deleted EDID
'3' changed EDID
'4' empty EDID slot
DA2DVI-DL – User's Manual
6.3.4. 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 memory location U14 which is the EDID saved by the user to the location
14.
Legend: Depending on <loc> the query can be for one EDID or all EDID in the block.
<loc> Result
Fxx Factory EDID query
Uxx User EDID query
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
<EDID_HEADER> consists of 3 fields separated by spaces:
<loc>
PNPID code
Preferred resolution
Name
The <EDID_HEADER> is '-' for invalid EDIDs.
Example
→ {whu14}
← (EH#U14 NEC 1280x1024@60 LCD1970NXp)
Response
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 display device stored in product descriptor.
21