Nortek Vectrino - Example 2 Running three Vectrinos with synchronized sampling of velocities in burst mode.

NORTEK VECTRINO VELOCIMETER
User Guide
41
Rev. C • 10.2004
Example 2 Running three Vectrinos with synchronized sampling of
velocities in burst mode.
Connect the SyncOut line from one Vectrino to the SyncIn line on the two
other Vectrinos. Connect the ground cables together. Choose
Out put Sync for
Vectrino
for the fi rst Vectrino. This will be the master. In the setup for the two
other Vectrinos 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 confi gu-
ration parameters for all three instruments.
Synchronize the clocks in all the Vectrinos. Start Recorder Deployment for
the master Vectrino setting the deploy ment 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 Vectrinos setting the deployment
time to the deployment time of the master Vectrino minus 10 seconds (in this
example 3.59.50 p.m.).
The two slave Vectrinos will now wake up in each burst 10 seconds ahead of
the master Vectrino. After outputting the burst header and one set of system
data they will then wait for the start on sync trig ger from the master Vectrino
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 mas ter Vectrino as they receive the sample on sync
triggers from the mas ter Vectrino.
The same procedure can of course be used if only synchronized star tup is re-
quired. The only difference is that the
Sample on sync box in the Input Sync
confi guration must be left unchecked.
Example 3 Starting three Vectrinos simultaneously from another
instrument
Connect the SyncIn signals from the three Vectrinos together with the sync
output line from the instrument providing the start on sync sig nal. Ground
all the four instruments together. Using identical and desired setups for the
three Vectrinos, start all of them with the Start on sync option confi gured.
Generate the start on sync trigger from the other instrumentation.