1.18 Use Cases
199
Figure 4: Setup for looped-back Timer
Setting the
Timer1
to 1 s seems like an easy task but due to some internal dependencies you should be carefully
here.
• Please use 999997 us duration since the self-triggering will consume the other 3 us
• Please refrain from switching on PPSSync inside the Master camera since (at least in Type 1 cameras) since
this will lead to an instable feedback loop.
1.18.6.3.5
Synchronizing using mvDeviceTimeSync
The
Device Control
(p.
) property
"mvDeviceTime
←
-
Sync"
is another way to synchronize the timestamp. The
"mvDeviceTimeSync"
provides three possibilites:
•
mvSystemTime
(Default)
The camera uses the timestamp from the host PC and synchronizes approx. every second. The timestamp
reference used is the time in microseconds since January 1st 1970 (i.e. UNIX time).
•
mvNoSynchronization
There will be no synchronization, i.e. the timestamps drift apart.
•
mvPushSynchronization
If this possibility is selected you may write another property called
"mvDeviceTimeSyncPushValue"
to trans-
fer a timestamp to the camera from another source, for example from a GPS receiver connected to the host
PC. You can also use this property to write the normal system time manually to the camera. This is similar to
using
"mvSystemTime"
but there will be no automatic resynchronization and you can choose exactly when
to synchronize the times of the camera and PC yourself.
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