Comprehensive Manual96
© 2018 Nortek AS
Voh high level output voltage, min 2.5 V
Vol low level output voltage, max 0.45 V
Figure: Output voltage levels for SyncOut
There is spike protection on both signal ports but there is no filtering on the input port. It is important
to consider noise issues (ground loops, etc) as noise may cause an unwanted start on sync trigger.
Example 1: Running three Vectors with synchronized sampling of velocities in continuous mode.
Connect the SyncOut line from one Vector to the SyncIn line on the two other Vectors.
Connect the ground cables together.
Choose Output Sync for Vector for the first Vector. This will be the master.
In the setup for the two other Vectors that will be slaves, check both boxes in the Input Sync
(Start on sync and Sample on sync).
With the rest of the setup identical for the three instruments; start the two Vector slaves first. When
the master Vector then is started, it will trigger the start of the other two Vectors.
Example 2: Running three Vectors with synchronized sampling of velocities in burst mode.
Connect the SyncOut line from one Vector to the SyncIn line on the two other Vectors.
Connect the ground cables together.
Choose Output Sync for Vector for the first Vector. This will be the master.
In the setup for the two other Vectors that will be slaves, check both boxes in the Input Sync
(Start on sync and Sample on sync).
Use identical setup for the rest of the configuration parameters for all three instruments.
Synchronize the clocks in all the Vectors.
Start Recorder Deployment for the master Vector setting the deployment time to the time when
you want the instrument to start (for example 4.00.00 p.m. or 16.00.00 – exact time format
depends on your computer’s settings).
Start Recorder Deployment for the two slave Vectors setting the deployment time to the
deployment time of the master Vector minus 10 seconds (in this example 3.59.50 p.m.). The two
slave Vectors will now wake up in each burst 10 seconds ahead of the master Vector. After
outputting the burst header and one set of system data they will then wait for the start on sync
trigger from the master Vector so that all three instruments will start the data acquisition
simultaneously (in this example at 4.00.00 p.m.). The two slaves will then continue taking data at
the identical rate of the master Vector as they receive the sample on sync triggers from the
master Vector.
The same procedure can of course be used if only synchronized startup is required. The only
difference is that the Sample on sync box in the Input Sync configuration must be left unchecked.
Example 3: Starting three Vectors simultaneously from another instrument
Connect the SyncIn signals from the three Vectors together with the sync output line from the
instrument providing the start on sync signal.
Ground all the four instruments together.
Using identical and desired setups for the three Vectors start all of them with the Start on sync
option configured.
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