Example: Configuring a 20 PPS Output

The instructions below explain how to configure a 20 PPS output signal:

First, assign a GPIO output to an I/O pin pair:

  1. In the Web UI, navigate to MANAGEMENT > NETWORK: Pin Layout. The Pin Layout screen will be displayed.

  2. Prior to assigning the new output, identify a pin pair in the Pin Layout table that is not used (Signal = "None") or not needed. You can Delete it, but you may also simply assign the new PPS Output as described below, thus overwriting the existing Input or Output.
  3. Add a pin configuration by clicking the PLUS icon in the top-right corner (1). The Add Pin window will display.
  4. Start with the Type Filter drop-down menu (second line in the window) and select DCLS_TTL.
  5. From the Signal drop-down menu, select GPIO_OUT DCLS_TTL.
  6. From the Pins drop-down menu in line 3, select e.g., pins 1,2.
  7. Click Submit.
  8. In the Actions panel, click Apply Changes.

Then, configure the settings for the newly created output:

  1. Navigate to INTERFACES > OUTPUTS > General Purpose Output/GP Output 0. The GP Output 0 status window will be displayed.
  2. Click Edit. The GP Output 0 configuration window will be displayed.
  3. Under General, set the Output Mode to Square Wave, and check Output Enabled.
  4. To configure e.g., a 20 PPS signal, set the Pulse Width to 1 000 000 ns, and the Period to 50 000 000 ns:

  5. Click Submit.