Alarms, Genlock, Alarms ttl genlock – Extron Electronics VN-Matrix 250 User Guide User Manual
Page 25: Rs-232 control, Coms
RS-232 control
RS-232 control — allows low level configuration of the encoder or
decoder. Use the three poles to the right of the shared captive screw
connector (see
R
, or
R
on page 13). See
the
boxes on page 14 for information about
preparing and connecting wires to a captive screw connector. See
Low Level Device Configuration
NOTE: The RS‑232 pins are not in the standard Extron
orientation. Ensure that the connector is correctly wired (see
the figure to the right).
Alarms
Alarm relays — provide a normally open (NO) contact. Use the first
two poles of a shared captive screw connector (see
S
or
S
boxes on
page 14 for information about preparing and connecting wires to a
captive screw connector.
TTL
TTL (VNE 250) —the TTL (Transistor‑transistor logic) feature is not
currently supported.
Genlock
Genlock I/O (VND 250) —is used to synchronize the video output
on multiple decoders.
NOTE: The VND 250 uses TTL level signalling, which is not
compatible with normal genlock sources.
One decoder is selected as the reference (master) unit, and provides the signal that is used
to synchronize all the other units (slaves).
1.
Configure one decoder as the Master unit, using the web‑based GUI control program
(see
2.
Configure all the other decoders as slaves by selecting the
of the
web‑based GUI control program (see page 59).
3.
Connect the Ground connector of the master unit to the ground connector of the first
slave device.
4.
Connect the Out connector of the master unit to the In connector of the first slave
device.
ALARM
GENLOCK
NO G IN G OUT
I/O
GENLOCK
IN G OUT
Tx Rx
PASS THRU CONTROL
G Tx Rx
COMS
Tx Rx
PASS THRU
ALARM
TTL
NO G IN G OUT
I/O
ALARM
NO G
ALARM
GENLOCK
NO G IN G OUT
I/O
ALARM
NO G
RS-232 Connector
Wiring
Receiv
e
Tr
ansmi
t
Groun
d
Tx Rx
PASS THRU CONTROL
G Tx Rx
COMS
Tx Rx
PASS THRU
P
VNM 250 • Rear Panel and Connections
19