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Digital IO Setup

Updated on Apr 2, 2026

In the Digital IO Setup menu, you can configure the 4 external data channels to LabSat 4. These channels can be set up to record/replay CAN, RS232, and/or digital signals. You can also configure arbitrated CAN and RS232 recording/replay.

Screenshot of the Digital IO Setup screen.


This section is where you can adjust the sample rate for the digital signals you want to capture in your scenario. By reducing the sample rate, the recorded data will take less space in the available recording rate.

The sample rate options will depend on the maximum bandwidth set on the frequency setup menu. 

The Time accuracy and Max baud rate will update as you adjust the sample rate.

DigitalIOMenu_SampleRate_300px

This section is where you can adjust the sample rate for the digital signals you want to capture in your scenario. By reducing the sample rate, the recorded data will take less space in the available recording rate.

The sample rate options will depend on the maximum bandwidth set on the frequency setup menu. 

The Time accuracy and Max baud rate will update as you adjust the sample rate.

DigitalIOMenu_SampleRate_300px


This section contains a diagram of the pins in the Expansion Connector.

In the table below the diagram, you can set the signal source picking from the available channels:

  • CAN 1
  • CAN 2
  • PPS
  • RS232
  • Digital 1
  • Digital 2

After selecting a signal source, the Web Server will provide pin information for the record input and the replay output and the pin diagram for the Expansion Connector port and the Expansion Connector will update to illustrate the connections. 

Example of the Digital IO Setup menu when you configure digital channels.


Click on the toggle switch next to Record CAN data to text log file to enable/disable the recording of CAN data to a text log file.

You can also enable acknowledgements from LabSat 4 to the CAN bus; click on the toggle switch next to Enable Acknowledge.

When you enable CAN data recording, you can set the Baud rate for the CAN 1 and CAN 2 signals:

  • 1 Mbit/s
  • 500 kbit/s
  • 250 kbit/s
  • 125 kbit/s
  • 100 kbit/s
  • Custom

If you select Custom, you can type in the required baud rate in the value box.  

Screenshot showing the CAN Baud Rate dropdown list.

Click on the toggle switch next to Record CAN data to text log file to enable/disable the recording of CAN data to a text log file.

You can also enable acknowledgements from LabSat 4 to the CAN bus; click on the toggle switch next to Enable Acknowledge.

When you enable CAN data recording, you can set the Baud rate for the CAN 1 and CAN 2 signals:

  • 1 Mbit/s
  • 500 kbit/s
  • 250 kbit/s
  • 125 kbit/s
  • 100 kbit/s
  • Custom

If you select Custom, you can type in the required baud rate in the value box.  

Screenshot showing the CAN Baud Rate dropdown list.


Click on the toggle switch next to Record RS232 data to log file to enable/disable the recording of RS232 data to a log file.

When you have enabled this, you will get access to the following RS232 port settings:

Screenshot of the RS232 Record Options.

Click on the toggle switch next to Record RS232 data to log file to enable/disable the recording of RS232 data to a log file.

When you have enabled this, you will get access to the following RS232 port settings:

Screenshot of the RS232 Record Options.
Baud RateBitsParityStop bits
48005None1
96006Odd2
144007Even
192008
28800
38400
56000
57600
115200
230400


Click on the toggle switch for Use log file for CAN replay if available to enable/disable the usage of an available log file for CAN replay. 

Click on the toggle switch for Use log file for RS232 replay if available to enable/disable the usage of an available log file for RS232 replay.

Screenshot of the replay options.

Click on the toggle switch for Use log file for CAN replay if available to enable/disable the usage of an available log file for CAN replay. 

Click on the toggle switch for Use log file for RS232 replay if available to enable/disable the usage of an available log file for RS232 replay.

Screenshot of the replay options.


Click on the Apply changes button to save all changed settings to LabSat 4. 

Image of the Apply Changes button.

Click on the Apply changes button to save all changed settings to LabSat 4. 

Image of the Apply Changes button.