Apex Dual Orin SYNC_OUT#
Hardware Connection#
The main purpose of SYNC OUT is to allow the system to trigger external cameras at a fixed frequency.
Function Label
Pin Label
Hardware Specification#
Pin |
Specification |
|---|---|
SYNC_OUT |
3.3V |
Usage#
Measure sync-out signal duration with oscilloscope#
Use an oscilloscope to measure the interval between two Sync out (10Hz) pulses and compare it with the theoretical value.
Result:
Theoretical Value（μs） |
Measured Value（μs） |
Error（μs） |
|
|---|---|---|---|
Sync out |
100000 |
99999.2 |
0.8 |
Evaluate synchronization feature by measuring timestamp jitter#
Sample code to calculate timestamp jitter#
MiiVii device provides sample code for users to evaluate the synchronization feature.
#navigate to the following directory
cd /opt/miivii/feature/sync_test/bin
#evaluate sync-out method performance
./sync_out_test
Sync out jitter measurement#
Sample code(sync_out_test) could run real-time analytics on the received timestamp. Time interval, frequency, max deviation and standard deviation are printed out.
