Table of Contents
The RS-232 Port .............................................................. 1
The Response Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Error Response Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
The HDMI5 Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Version Query . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Output Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Query Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Switching Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Relay Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Relay Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
ii
The RS-232 Port
The RS-232 port on the HDMI5 is the same format, and pinout, as a PC-modem, and uses the
same type of cable as a standard serial modem would, which is a standard straight through
cable. Do not use a cable that is marked as a "Null Modem" cable.
The HDMI5 can also be used with any USB to RS-232 conversion cable, these are all typically
straight through cables.
The RS-232 port is a female type DE-9 connector (sometimes mistakenly referred to as a DB-9
connector) with the following pinout:
5 4 3 2 1
Pin definitions:
1 - No Connect
2 - TX
3 - RX
4 - No Connect
5 - GND
The port settings used by the HDMI5 are:
Baudrate:
9600
Data Bits: 8
Stop Bits: 1
Parity:
NONE
9 8 7 6
6 - No Connect
7 - No Connect
8 - No Connect
9 - No Connect
HDMI5 Component Video Switch
1