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HDS-821PR Serial Commands - HEX Values

HDMI 2x1 Multi-Viewer Switch Seamless Switcher w/ PIP Function Support HDMI 1.3a Full HD 1080P IR Remote Control Scaler UP/Down 4 Picture Mode 2 Input 1 Output RS232 Cable Included

###RS-232 Connection Settings

Baudrate：115200
Data width：8bit
Parity: none
Stop: 1bit

Overview

All commands are 13 bytes in length. The final byte is a checksum of the first 12 bytes.

Example for select input port: checksum = 0x100 – ( 0xa5 + 0x5b + 0x02 + 0x03 + port + 0x00 + 0x01 + 0x00 + 0x00 + 0x00 + 0x00 + 0x00 )

###Available Functions Input
Resolution
Mode
Pip Position
PiP Size
PiP Border
Factory Reset

Input

Set Input

Sets the input as the primary output.

1 2 3 4 5 6 7 8 9 10 11 12 13
0xa5 0x5b 0x02 0x03 port (1,2) 0x00 0x01 0x00 0x00 0x00 0x00 0x00 checksum

Change only input port & checksum

For convenience, complete command and checksums are listed

Description Command
Input Port 1 A5 5B 02 03 01 00 01 00 00 00 00 00 F9
Input Port 2 A5 5B 02 03 02 00 01 00 00 00 00 00 F8

Query Input

Gets the number of the input actively displayed.

Command
Description Command
Query Input A5 5B 02 01 01 00 00 00 00 00 00 00 FC
Response

Port will be 1 or 2

1 2 3 4 5 6 7 8 9 10 11 12 13
0xa5 0x5b 0x02 0x01 0x01 0x00 port 0x00 0x00 0x00 0x00 0x00 checksum

Resolution

Set Output Resolution

Sets the video resolution to send on the output.

1 2 3 4 5 6 7 8 9 10 11 12 13
0xA5 0x5B 0x08 0x06 resolution (0-4) 0x00 0x00 0x00 0x00 0x00 0x00 0x00 checksum
Change only resolution & checksum

For convenience, complete command and checksums are listed

Value Description Command
00 1080p A5 5B 08 06 00 00 00 00 00 00 00 00 F2
01 720p A5 5B 08 06 01 00 00 00 00 00 00 00 F1
02 1080i A5 5B 08 06 02 00 00 00 00 00 00 00 F0
03 1024x768 A5 5B 08 06 03 00 00 00 00 00 00 00 EF
04 1360x768 A5 5B 08 06 04 00 00 00 00 00 00 00 EE

Query Output Resolution

Command
Description Command
Query Resolution A5 5B 09 06 00 00 00 00 00 00 00 00 F1
Response

Response will be a value 0 through 4, corresponding to the current output resolution

1 2 3 4 5 6 7 8 9 10 11 12 13
0xA5 0x5B 0x09 0x06 resolution (0-4) 0x00 0x00 0x00 0x00 0x00 0x00 0x00 checksum
Value Resolution
00 1080P
01 720P
02 1080I
03 1024X768
04 1360X768

Mode

Set Mode

Sets the video display mode.

1 2 3 4 5 6 7 8 9 10 11 12 13
0xA5 0x5B 0x19 0x01 mode (1-4) 0x00 0x00 0x00 0x00 0x00 mode (1-4) 0x00 checksum
Change only display mode & checksum

For convenience, complete command and checksums are listed

Mode Visual Description Command
01 Single Source Single Source A5 5B 19 01 01 00 00 00 00 00 01 00 E4
02 Picture in Picture PIP A5 5B 19 01 02 00 00 00 00 00 02 00 E2
03 Side by Side Full Side-by-Side (FULL) A5 5B 19 01 03 00 00 00 00 00 03 00 E0
04 Side by Side 16:9 Side-by-Side (16:9) A5 5B 19 01 04 00 00 00 00 00 04 00 DE

Query Mode

Command
Description Command
Query MODE A5 5B 19 02 00 00 00 00 00 00 00 00 E5
Response

Response will be a value 1 through 4, corresponding to the current output resolution

1 2 3 4 5 6 7 8 9 10 11 12 13
0xA5 0x5B 0x19 0x02 mode (1-4) 0x00 0x00 0x00 0x00 0x00 0x00 0x00 checksum
Value Mode
01 Single Source
02 PIP
03 Side-by-Side (FULL)
04 Side-by-Side (16:9)

Pip Position

Set PiP Position

1 2 3 4 5 6 7 8 9 10 11 12 13
0xA5 0x5B 0x19 0x03 position (1-4) 0x00 0x00 0x00 0x00 0x00 position (1-4) 0x00 checksum

Change only position & checksum

For convenience, complete command and checksums are listed

Position Visual Description Command
01 Top Left Top Left A5 5B 19 03 01 00 00 00 00 00 01 00 E2
02 Top Right Top Right A5 5B 19 03 02 00 00 00 00 00 02 00 E0
03 Bottom Left Bottom Left A5 5B 19 03 03 00 00 00 00 00 03 00 DE
04 Bottom Right Bottom Right A5 5B 19 03 04 00 00 00 00 00 04 00 DC

Query PiP Position

Command
Description Command
Query Position A5 5B 19 04 00 00 00 00 00 00 00 00 E3
Response

Response will be a value 1 through 4, corresponding to the current output resolution

1 2 3 4 5 6 7 8 9 10 11 12 13
0xA5 0x5B 0x19 0x04 position (1-4) 0x00 0x00 0x00 0x00 0x00 0x00 0x00 checksum
Value Mode
01 Top Left
02 Top Right
03 Bottom Left
04 Bottom Right

PiP Size

Set PiP Size

1 2 3 4 5 6 7 8 9 10 11 12 13
0xA5 0x5B 0x19 0x05 size (1-3) 0x00 0x00 0x00 0x00 0x00 size (1-3) 0x00 checksum

Change only size & checksum

For convenience, complete command and checksums are listed

Description Command
Small A5 5B 19 05 01 00 00 00 00 00 01 00 E0
Medium A5 5B 19 05 02 00 00 00 00 00 02 00 DE
Large A5 5B 19 05 03 00 00 00 00 00 03 00 DC

Query PiP Size

Command
Description Command
Query Size A5 5B 19 06 00 00 00 00 00 00 00 00 E1
Response

Response will be a value 1 through 3, corresponding to the current output resolution

1 2 3 4 5 6 7 8 9 10 11 12 13
0xA5 0x5B 0x19 0x04 size (1-4) 0x00 0x00 0x00 0x00 0x00 0x00 0x00 checksum
Value Mode
01 Small
02 Medium
03 Large

PiP Border

Set PiP Border

1 2 3 4 5 6 7 8 9 10 11 12 13
0xA5 0x5B 0x0C 0x01 border (0F/F0) 0x00 border (0F/F0) 0x00 0x00 0x00 0x00 0x00 checksum

Change only border & checksum

For convenience, complete command and checksums are listed

Description Command
Show Border A5 5B 0C 01 0F 00 0F 00 00 00 00 00 D5
Hide Border A5 5B 0C 01 F0 00 F0 00 00 00 00 00 13

Factory Reset

Description Command
Reset A5 5B 08 0A 00 00 00 00 00 00 00 00 EE

Query States

Description Command
Query Input A5 5B 02 01 01 00 00 00 00 00 00 00 FC
Query Resolution A5 5B 09 06 00 00 00 00 00 00 00 00 F1
Query MODE A5 5B 19 02 00 00 00 00 00 00 00 00 E5
Query PIP Position A5 5B 19 04 00 00 00 00 00 00 00 00 E3
Query Size A5 5B 19 06 00 00 00 00 00 00 00 00 E1
Query Border A5 5B 0C 03 00 00 00 00 00 00 00 00 F1