Kramer Electronics Ltd.
SL-280 – Remote Operation via the Web Pages
17
Configuring a Digital Out Trigger Type
To configure a digital output trigger type:
1. On the GPIO Ports Settings page, select Digital OUT from the Trigger type option box
(
Figure 10
).
A Warning message appears.
Figure 11: Digital Out Selection Warning
2. Click
OK
.
The Digital OUT options appear.
Figure 12: GPIO Ports Settings Page – Digital OUT Trigger Type
3. Select one of the following for the Pull-up resistor setting:
•
Pullup resistor enabled:
The port can be used for controlling devices that accept a TTL signal such as for
powering LEDs. The voltage output is TTL positive logic: open: ~ 3.5V; closed: ~
0.3V.
When the pull-up resistor is enabled, the port state is high. For the state to be low,
you must click
Low
for the Current Status.
•
Pullup resistor disabled:
The port is used for controlling external devices such as room or light switches. The
external source device determines the voltage output; the maximum voltage is 30V
DC and the maximum current is 100mA.
When the pull-up resistor is disabled, the port state is low and to set it high, you must
click
High
for the Current Status.
Make sure that the current in this configuration does not exceed 100mA.
