User manual

HDMI Selection Switcher 4x1
PTN Electronics Limited 3 www.PTN-electronics.com
Note: When select any one of the 4 input channels, just press the corresponding key on
the front panel. When press and hold on front key INPUT1 for 3 seconds, the switcher
may begin/stop to run in auto-switching/manual-switching mode.
4.2. Operations of the Remote Controller
5. Interfaces Connection Introduction
5.1. Connection with Control System
With the RS-232 port, the HDMI matrix switchers can be control by several kinds of
control systems.
This RS-232 communication port is a female 9-pin D connector. The definition of its
pins is as the table below.
No. Pin Function
1 N/u Unused
2 Tx Transmit
3 Rx Receive
4 N/u Unused
5 Gnd Ground
6 N/u Unused
7 N/u Unused
8 N/u Unused
9 N/u Unused
F5-3 9HDF
5.2. Connection with Computer
Please connect reference to the following contents.
1) Use a RS232 control line to connect the COM1 or COM2 port of the computer to
the RS232 interface of WHD4.
Note: When select any one of the
4 input channels, just press the
corresponding key on the remote
controller. When press and hold
on key 1 for 3 seconds, the
switcher may begin/stop to run in
auto-switching/manual-switching
mode.