Kramer Electronics VS-121HC - Manual (Page 12)

Operating the VS-121HC Switcher/Transcoder
9
7.1 Operating Using the Front Panel Buttons
The front panel includes 4 COMPOSITE input, 4 s-VIDEO input, 4
COMPONENT input, and one PANEL LOCK button.
To operate the unit:
• Press one of the 12 INPUT SELECTOR buttons to choose the relevant
video signal.
The selected button illuminates in red
1
To lock the input buttons (to prevent tampering with the unit):
and the converted or switched
signal is outputted to both component video outputs
• Press and hold the PANEL LOCK button for two seconds.
When the panel is locked and a channel selector button is pressed, the
PANEL LOCK button flashes
• Press and hold the button again for two seconds to unlock the buttons
7.2 Connecting to the VS-121HC via the RS-232 Port
The VS-121HC can be operated via a PC, touch screen, or serial controller
by means of serial commands transmitted through the RS-232 port.
You can connect to the VS-121HC via an RS-232 connection using, for
example, a PC. Note that a null-modem adapter/connection is not required.
To connect to the VS-121HC via RS-232, connect the RS-232 9-pin D-sub
rear panel port on the VS-121HC unit via a 9-wire straight cable (pin 2 to
pin 2, pin 3 to pin 3, pin 5 to pin 5) to the RS-232 9-pin D-sub port on your
PC
To operate your device using serial commands, you need to install Kramer's
control software that can be downloaded from the Kramer Electronics Web
site.
For an explanation of all serial commands, see section 11 .
7.2.1 Connecting the RS-232 Port
You can connect to the unit via a crossed RS-232 connection, using for
example, a PC. A crossed cable or null-modem is required as shown in method
A and B respectively. If a shielded cable is used, connect the shield to pin 5.
Method A ( Figure 3 )—Connect the RS-232 9-pin D-sub port on the unit via
a crossed cable (pin 2 to pin 3 , pin 3 to pin 2 , and pin 5 to pin 5 ) to the
RS-232 9-pin D-sub port on the PC.
1 Pressing an illuminated button for more than 2 seconds will disconnect the output and the button will no longer illuminate