Gefen GTB-HD-SIGGEN - Manual (Page 87)

81
RS-232 COMMANDS
Notes
1. After the RS-232 device sends commands to the HD Pattern Signal
Generator, the RS-232 device must wait for the HD Pattern Signal Generator
to responds. Although the RS-232 device can send another command
without waiting for a response, the communication may fail if the HD Pattern
Signal Generator is in Auto mode.
2. To confi gure the HD Pattern Signal Generator to follow a sequence of
commands in Auto mode, the following syntax is used: ATNxxx + ATTxxx
+ ATPxxx + ATIxxx...
3. If the HD Pattern Signal Generator is not set to Pattern 47, running a query
for the ColorSetting pattern will return: CRR300, CRG300, CRB300 or
CRY300
.
4. After sending the ERD001 response, the HD Pattern Signal Generator reads
the sink’s EDID and transmits the data to the remote terminal. If the EDID
cannot be read, then the HD Pattern Signal Generator sends 0xFE and
stops the datastream. The HD Pattern Signal Generator supports a 256-
byte EDID (block0 + block1).
5. After sending the ERS001 response, the HD Pattern Signal Generator
erases the sink’s EDID and fi lls all bytes with FF. After the EDID is erased,
the HD Pattern Signal Generator returns ERS002. If the process fails, then
ERS003
is returned.
6. After sending the EWR001 response, the HD Pattern Signal Generator waits
for the EDID datastream (256 bytes) from the RS-232 device. After receiving
the datastream, the HD Pattern Signal Generator writes the EDID to the sink.
If the write-process is successful, then EWR002 is returned. If the write-
process fails, then EWR003 is returned.
7. Send MOT001 and wait for the MOT001 response from the HD Pattern Signal
Generator. Send the custom string and wait for the MOT002 response. The
maximum length for a string is 12 bytes. Any unused bytes must be fi lled
with 0x00. Only English characters are supported.