External Clock

← External Signals

Supported on DELTA-10. The camera uses a 24 MHz internal reference clock, so a 24 MHz external reference is recommended. Other supported frequencies can also be used with matching clock and timing settings.

Connect an external reference

Connect the source to M8 pin 5, External Clock In. See Camera Interfaces for the genuine NRV cable mapping.

Signal-generator setting Value
Amplitude 1.8 V peak-to-peak: 0–1.8 V
Offset 0.9 V
Frequency 24 MHz recommended, matching the internal reference
Duty cycle 50%
Waveform Square wave

Select the clock source

  1. Supply the external reference before switching clocks. Use 24 MHz to keep the existing clock configuration.
  2. In DVS Viewer, open Sensor Settings → Clock source.
  3. Click External and confirm the switch. The status changes to Running on external clock.
Sensor Settings · Clock source
Clock source controls with Internal and External buttons; Internal is currently selected
Select External after connecting the input. This capture shows the controls before switching.

With a 24 MHz external reference, the existing camera configuration can be used unchanged. If using a different frequency, adjust the clock, capture timing, and timestamp conversion for that frequency. This replaces the reference clock; it is not the external-trigger input.

Keep the clock supplied Without a valid external clock, the image may stop or the sensor may not operate correctly. Select Internal before disconnecting the external source.