Knox Video Media Flex Series - Manual (Page 10)

Page 20 Page 5
2.6 (OPTIONAL) VGA CONNECTIONS
Connect up to eight VGA SOURCES to the DB15HD connectors labeled VGA
Inputs. Inputs are automatically terminated.
Connect one or more VGA display devices to the DB15HD connectors labeled
VGA Outputs.
Do not connect a VGA SOURCE to any of the VGA OUTPUT connectors.
2.7 RS232 CONNECTIONS
The MediaFlex Series can be controlled by external RS232 drivers. Connect a
computer terminal, or other RS232 control device to the female DB9 connector on
the right side of the rear panel. The MediaFlex is wired as a data terminal; that is,
data out of the MediaFlex is on pin 2, data in is on pin 3, and pin 5 is common
(ground).
A direct pin-for-pin connection from a PC compatible COM port should be set
up as follows: select 9600 baud, 8 bits, no parity, and one or two stop bits. Set the
Flow Control to NONE.
KNOX VIDEO
MediaFlex Series Audio/Video Distribution System
KNOX VIDEO
MediaFlex Series Audio/Video Distribution System
3.5 CONTROL VIA THE CONTACT CLOSURES
The MediaFlex Series provides for 8 regular contact closures and one optional
Doorbell contact closure, accessible from the rear panel DB25 connector. Allowable
inputs include mechanical switches, relays, TTL or CMOS signals, and opto-
isolators. One side of the contact closure must be at ground potential.
As programmed from the factory, the regular contact closures are single-
action closures (active on closure only) which allow the user to recall up to 8
stored patterns, one for each contact closure.
Each regular contact closure can be modified by an RS232 command to execute
a programmed string of commands upon closure (single-action) and an optional
second set of commands upon re-opening or timeout
(double-action). To modify
the action to be taken by a contact closure, send the command
KmnCMD1,CMD2 :CMD3,CMD4:ss
where m is the contact number 1-8,
n is 0 for single-action, 1 for double-action, 2 for timed mode
CMD1
, CMD2 is a valid string of commands separated by
commas to be executed on closure (e.g., B11,B21,B31)
CMD3,CMD4 is a valid string of commands separated by
commas to be executed upon reopening, if in double-action
mode (e.g., B12,B22,B32)
ss is the time in seconds between commands (for timed mode
only)