Specifications subject to change without notice
© Digital View Ltd – Ver 1.5 7 May 2020 (DT-1920-HDMI-EDPT_manual.doc)
Page 28 of 33
3. Other control
Function
Command
Description
Acknowledge (if enabled)
Select RS-232
acknowledge
0xc1, “0” | “1”
Disable/enable command
acknowledge.
“0” – acknowledge disabled.
“1” – acknowledge enabled. (Default)
Command
availability
0xc4, nn / nnnn
Check whether a command is
available.
“0” – not available.
“1” – available.
e.g “0x81” command
send
“0xc4 0x38 0x31”
feedback
“0xc4 0x38 0x31 0x31”
e.g “0xee 0x5c” command
send
“0xc4 0x45 0x45 0x35 0x43”
feedback
“0xc4 0x45 0x45 0x35 0x43 0x31”
Power On/Off
0xc8,
“0” | “1” |
“?”
Soft power on/off
off/on
query
“0” – soft power off.
“1” – soft power on.
Query video input
status
0xc9
Query the status of the
displaying video windows source
Input status nn nn:
“0”,”0” : no video source / disabled
“H,”1” D1: HDMI
Feedback 4 video windows status in
form of:
nn nn (P1)
Query BIOS
version
0xcb, “0”
Read BIOS version
BIOS version “VV.YY.ZZ”
VV = Vx or Ex, (x is version digit)
V = Release version
E = Engineering Sample
YY= Version Number
ZZ= Customer Number
Query PCBA
number
0xcb, “1”
Read PCBA number
“nnnnn” = PCBA number
DT-1920-HDMI-EDPT = “41766”
Query Revision
Number
0xcb, “3”
Read Revision Number
“nn” = Revision number AA in firmware
version no. “VV.YY.ZZ.AA”
Reset parameters
0xce
Reset all parameters to default
value
“1” – successful.
Remark :
* - Only effective on V1.02.00 or up version.
n = 1-byte ascii-coded hex number, e.g., parameter value of 0x1 is represented by “1” (0x31).
mn or nn = 2-byte ascii-coded hex number, e.g., parameter value of 0x1e is represented by “1”, “e” | “E” (0x31,
0x6e|0x4e).
n = 1-byte ascii-coded hex number, e.g., parameter value of 0x1 is represented by “1” (0x31).
mn or nn = 2-byte ascii-coded hex number, e.g., parameter value of 0x1e is represented by “1”, “e” | “E” (0x31,
0x6e|0x4e).
