orbbec
Synchronisation Config
I am using two Astra 2 devices with a Multi-Camara Sync Hub Dev on windows 11. I am having issues with updating the settings. Have updated settings as shown below (it is recommended for astra 2 the irTriggerSignalInDelay is at least 4000). I assumed this corresponded to depth_delay_us. I may be wrong:
{
"devices": [
{
"serial_number": "XXXXXXXX",
"config": {
"mode": "PRIMARY",
"depth_delay_us": 10000,
"color_delay_us": 0,
"trigger_to_image_delay_us": 0,
"trigger_out_enable": true,
"trigger_out_delay_us": 0,
"frames_per_trigger": 1
}
},
{
"serial_number": "XXXXXXX",
"config": {
"mode": "SECONDARY",
"depth_delay_us": 10000,
"color_delay_us": 0,
"trigger_to_image_delay_us": 0,
"trigger_out_enable": true,
"trigger_out_delay_us": 0,
"frames_per_trigger": 1
}
}
]
}
When I try to update this using example code: multicamera_recorder.py to check that the cameras have accepted these changes the I get a warning. [info][22352][DeviceSyncConfigurator.cpp:34] New sync config is same as current device sync config, the upgrade process would not execute!. But when I print what I am trying to change using:
sync_config: OBMultiDeviceSyncConfig = device.get_multi_device_sync_config()
sync_config_json = multi_device_sync_config[serial_number]
sync_config = device.get_multi_device_sync_config()
sync_config.mode = sync_mode_from_str(sync_config_json["config"]["mode"])
sync_config.color_delay_us = sync_config_json["config"]["color_delay_us"]
sync_config.depth_delay_us = sync_config_json["config"]["depth_delay_us"]
sync_config.trigger_out_enable = sync_config_json["config"][
"trigger_out_enable"
]
sync_config.trigger_out_delay_us = sync_config_json["config"][
"trigger_out_delay_us"
]
sync_config.frames_per_trigger = sync_config_json["config"][
"frames_per_trigger"
]
device.set_multi_device_sync_config(sync_config)
print(f"Device {serial_number} sync config: {sync_config}")
print(
f"""set sync config:{[sync_config.color_delay_us,
sync_config.depth_delay_us,
sync_config.frames_per_trigger,
sync_config.mode,
sync_config.trigger_out_delay_us,
sync_config.trigger_out_enable,
sync_config.trigger_to_image_delay_us]}"""
)
got_sync_config: OBMultiDeviceSyncConfig = device.get_multi_device_sync_config()
print(
f"""got sync config:{[got_sync_config.color_delay_us,
got_sync_config.depth_delay_us,
got_sync_config.frames_per_trigger,
got_sync_config.mode,
got_sync_config.trigger_out_delay_us,
got_sync_config.trigger_out_enable,
got_sync_config.trigger_to_image_delay_us]}"""
)
I get for cam1:
[info][24852][DeviceSyncConfigurator.cpp:34] New sync config is same as current device sync config, the upgrade process would not execute!
set sync config:[0, 4000, 1, <OBMultiDeviceSyncMode.PRIMARY: 4>, 0, True, 1]
got sync config:[0, 1, 1, <OBMultiDeviceSyncMode.PRIMARY: 4>, 0, True, 1]
and for cam 2:
[info][24852][DeviceSyncConfigurator.cpp:34] New sync config is same as current device sync config, the upgrade process would not execute!
set sync config:[0, 4000, 1, <OBMultiDeviceSyncMode.SECONDARY_SYNCED: 16>, 0, True, 1]
got sync config:[0, 1, 1, <OBMultiDeviceSyncMode.SECONDARY_SYNCED: 16>, 0, True, 1]
Am I trying to change the correct setting? And why wont this update (are there limits I am not seeing)? If I am not doing something incorrectly there may be an bug within the examples.
The purpose of setting a delay for Astra 2 is to prevent laser interference between devices, and the delay should be at least 4000us. If your Multi-Camara Sync Hub Dev is star type , the parameters to configure are as follows: { "devices": [ { "serial_number": "XXXXXXXX", "config": { "mode": "PRIMARY", "depth_delay_us": 0, "color_delay_us": 0, "trigger_to_image_delay_us": 0, "trigger_out_enable": true, "trigger_out_delay_us": -1, "frames_per_trigger": 1 } }, { "serial_number": "XXXXXXX", "config": { "mode": "SECONDARY", "depth_delay_us": 0, "color_delay_us": 0, "trigger_to_image_delay_us": 4000, "trigger_out_enable": true, "trigger_out_delay_us": 0, "frames_per_trigger": 1 } } ] }
If using a daisy-chain-type sync hub, the parameters to configure are as follows: { "devices": [ { "serial_number": "XXXXXXXX", "config": { "mode": "PRIMARY", "depth_delay_us": 0, "color_delay_us": 0, "trigger_to_image_delay_us": 0, "trigger_out_enable": true, "trigger_out_delay_us": -1, "frames_per_trigger": 1 } }, { "serial_number": "XXXXXXX", "config": { "mode": "SECONDARY", "depth_delay_us": 0, "color_delay_us": 0, "trigger_to_image_delay_us": 0, "trigger_out_enable": true, "trigger_out_delay_us": -1, "frames_per_trigger": 1 } } ] }
If there are multiple slave devices (SECONDARY device) in a star configuration, the delay for each slave device must differ by at least 4000us， for example ，the first slave device is set 4000，the second slave device is set 8000， and so on.
Trigger Out Delay: -1 means the output time is based on the camera's default exposure time.
Thanks. Thats exactly what I needed. To clarify I am using the daisy chain.