Publicité
Les langues disponibles
Les langues disponibles
Managing I/O contacts
Using programmable and tamper-monitored digital inputs and outputs, contacts for
event-controlled recording can be controlled. For example, using a contact the
movement of a pan/tilt head can be triggered, a gate can be opened or an infrared
light can be switched on.
Each input and output can be given a meaningful name and an additional description
in the G-Set configuration software.
Assigning contacts
Digital inputs
The G-ST 8000+ has 16 control inputs, which are each equipped with an internal
pull-up resistor with 1 kΩ to +3,3 V.
The control inputs are distributed onto two 25-pin Sub-D sockets (inputs 1-8 / 9-16.
These are located on the back of the device.
Figure: 25-pin Sub-D sockets
Contacts for event processing can be connected to the control inputs of the Sub-D
sockets.
The event contacts can start or stop recording, for example, when a contact is
opened or closed or in case of sabotage. The events are created and set up accord-
ingly in the G-Set configuration software.
Tamper
To set up the tamper monitoring of contacts, follow these steps.
monitoring
1.
2.
For tamper monitoring using quiescent current circuits, three different levels can be
distinguished at the switch inputs:
The loop current monitoring is performed with a 470 Ω resistor at the end of the line.
Caution!
Do not apply a voltage higher than 3.3 V. This can lead to damage!
Define the foreseen contact as normally open.
Select the monitoring resistance so that the sum of monitoring resistance and
line resistance is 510 ohm +/- 10%.
Level
0:
0 V up to approx. 0,66 V
Level
1:
approx. 0,7 V up to approx. 1,5 V
Level
2:
approx. 1,6 V up to approx. 3,3 V
21
Back to the
table of contents
Publicité
