Service Manual 69
© 2018 Nortek AS
Figure: Vector definitions of X-axis. Note the red (or on som e versions Black) label on the X-arm of the
Vector.
3.1.4.3 Probe Check
Designed to act as a measurement quality assurance tool, the Probe Check function in the software
lets you inspect the region where the instrument makes its measurements by showing how the
signal varies with range. You can use it to diagnose and correct problems and to optimize data
collection. To start the Probe Check:
1) Make sure the instrument is submerged in water.
2) Click Online > Start Probe Check. For the Vectrino Profiler, enable the check in the "System"
tab.
Figure: The probe check function show s how the signal varies w ith range. The three colored graphs
correspond to each of the three vector receive beams. A is the transm it pulse. B is the area around the
measurement volum e. C is a bottom echo. Graphs are scaled in m m distance from the transmit
transducer, parallel to the transmit beam.
The actual sensing volume is a relatively narrow region within the broad peak indicated by B. It is for
the Vector centered at sample 100-105 and normally extends across +/- 3 counts from the center. If
the probe check outputs look very different from the figure above, check the Troubleshooting Guide
before taking further action. You can find probe checks that display and describe different problems
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