COBHAM Satcom EXPLORER 540 User & Integrator's Manual page 63

3.9.2 Control or status with 3-GPIO
To configure and connect 3-GPIO
3-GPIO is configurable in the web interface to be input or output, and active low or
active high.
• For configuration with web interface, see GPIO pins on page 4-45.
• For specifications, see I/O connector (X5) on page A-5.
Connection examples for 3-GPIO:
Configured as output (V+ = up to 32 VDC):
Note
Active Low
Example
Active High
Example
Configured as input (Low: 0 - 0.8 VDC, High: 2.8 - 32 VDC):
Note
98-148232-K
Place a flyback diode close to the terminals of the relay coil as shown below.
Active
E540
X5
3-GPIO
Active
E540
X5
3-GPIO
Place a pull-up resistor (10 kOhm, 125 mW) as shown below.
Active
E540
Active Low
X5 3-GPIO
Example
X5 4-GND
Active
E540
X5 3-GPIO
Active High
Example
X5 4-GND
Chapter 3: Operation
V+ Inactive
NC NO
E540
SPDT Relay
V+ Inactive
NC NO
E540
SPDT Relay
V+
Inactive
R
E540
V+
Inactive
R
E540
Status of the EXPLORER 540
V+
NC
X5
SPDT Relay
3-GPIO
V+
NC
X5
SPDT Relay
3-GPIO
V+
R
X5 3-GPIO
X5 4-GND
V+
R
X5 3-GPIO
X5 4-GND
NO
NO
3-29