6-4
6 Troubleshooting
6.2.2 Highly Fluctuating Signal Level Display (Only PSV-500 Standard)
If the signal level display on the back of the scanning head or in the software
periodically fluctuates highly, proceed as follows:
1. Wait until the CoherenceOptimizer state is shown as being stable in the
software. Refer also to your software manual.
The CoherenceOptimizer stabilizes the laser and the fluctuation of the
signal level display stops.
2. Check if your object is positioned unfavorably in a visibility minimum of the
laser.
If so, change the distance between the scanning head and the object.
You will find detailed information on optimal stand-off distances and
visibility maxima in F
IGURE
4.3.
6.2.3 Failure of the Pilot Laser (Only PSV-500 Xtra)
When the pilot laser has reached the end of its usable life, this will be
indicated by the pilot laser blinking. First, the blinking appears in full
brightness. You can continue using the pilot laser for a limited period by
reducing the brightness in PSV software.
Please contact our service personnel in order to exchange the pilot laser.
A safe operation of the instrument is still possible, even if the pilot laser is
blinking or defective. This means e.g. that you can finish a measurement if the
pilot laser fails during a measurement.
Exception: When using VideoTriangulation, the pilot laser is necessary.
6.3 No Measurement Signal or Implausible Measurement Signals
If the laser beam is emitted, but there is no measurement signal or just
implausible measurement signals, check the following. Refer also to the
software manual.
1. Have you connected up the system correctly as described in S
ECTION
3.4?
2. In PSV Acquisition, select Setup > Preferences.
The
Preferences
dialog appears.
3. On the Devices page, select the PSV-F-500-3D (1D) junction box.
4. Click OK.
5. Select Acquisition > Settings.
The
Acquisition Settings
dialog appears.
6. Display the Channels page.
7. In the Active column, tick the boxes for the Vibrometer Top, Vibrometer
Left, Vibrometer Right and Reference 1 channels.
8. In the Ref column, tick the box for the Reference 1 channel.
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