Primes FocusMonitor FM+, Operating Manual

Page: 40 / 56

FocusMonitor FM+
35,0(6
40 Revision 03/2019 EN
12 Troubleshooting
Error Possible cause Remedy
Error during a
measurement
• Data transmission error
• Processor crash in the
measuring system
• Program execution error
1. Restart the software.
2. Turn off the supply voltage, turn it on again, and
start another reset cycle.
3. Restart the computer.
Apart from the ambient
noise and zero offset, no
measuring signal is avail-
able.
The device is not aligned
correctly.
Check the device alignment to the laser beam.
The power density in the
focus is too low.
Increase the laser power. The absolute power density in
the focus typically has to be several hundred kW/cm² to
achieve a significant measuring signal with a standard
measuring tip.
The selected resolution is too
low for smaller focus spots
(e.g. r
f
= 80 µm) and a maxi-
mum measuring window.
First measure outside the direct focus area. If this
does not lead to a result, increase the resolution
(e.g. 256 x 256).
The measuring tip is defec-
tive.
Insert a new measuring tip (also see chapter 18.5 on
page 52).
The measuring tip is installed
incorrectly.
Turn the measuring tip around.
The signal enhancement is
too low.
Set the maximum enhancement and select the maxi-
mum measuring range.
The measuring tip is
destroyed during the
measurement.
The power density is too
high, igniting plasma on the
surface of the measuring tip.
Increase the speed of the measuring tip (see Tab. 18.4
on page 49 and Tab. 18.6 on page 51) and purge
the measuring area with inert gas.
When measuring small
beams, an offset of the
recorded measuring
tracks to one another is
observed.
Fluctuations in the synchro-
nism of the rotation disc
and delays in triggering the
trigger signal.
Position the beam as close to the left edge of the win-
dow as possible. The time interval between the trigger
signal and start of the measurement is then smaller and
errors can thus be reduced. Averaging is also often
helpful in this case.
13 Maintenance and service
The operator is responsible for determining the maintenance intervals for the measuring device.
PRIMES recommends a maintenance interval of 12 months for inspection and validation or calibration.
If the device is used only sporadically, the maintenance interval can also be extended up to 24 months.
14 Product disposal measures
In accordance with the Electrical and Electronic Equipment Act (Elektro-G), PRIMES is obliged to dispose of
PRIMES measuring devices manufactured after August 2005 free of charge.
PRIMES is registered in the German Used Appliance Register (Elektro-Altgeräte-Register (EAR)) as a manu-
facturer with the number WEEE reg. no. DE65549202.
Within the EU, you are welcome to send your PRIMES measuring devices to the following address to dis-
pose of them free of charge:
PRIMES GmbH
Max-Planck-Str. 2
64319 Pfungstadt
Germany