56
SMD Components
9.4.1
General Precautionary Measures for Using APD Detector Units
• Never switch the APDs on with a light source switched on. To prevent inadvertent
illumination of the APDs, in the Leica LASAF software, place the external port (
X1 Port)
in
Beam Path Settings
in the LAS AF software in the
mirror
position (see
and
)
before you switch on the APDs.
• Do not switch the APDs on until just before they are to be used. They require about 30-
60 seconds before they are ready for operation. Always switch the APDs off again after
use.
• The APDs can be switched on independently of one another. Only switch on the APD(s)
that you really need.
• As far as possible, avoid working in reflection. In order to work in fluorescence mode,
switch the AOBS to fluorescence. For the excitation, select laser lines that are outside
the detection zones defined by the filter cube. Switch the APDs off before you change
the filter cube.
9.4.2
Changing the Fuse
The fuse is in the device connector on the back of the APD detector unit. When replacing
the fuse, there must be no voltage at the APD detector unit (disconnect the mains plug).
9.4.3
Safety Shutoff
APDs are extremely sensitive detectors which can be damaged irreparably by light that is
too intense (such as room lighting). For this reason, APDs are protected by an automatic
shut-off. If the light that falls on the APDs is too intense, they are switched off for a few
seconds and an audible warning signal is emitted. The APDs are automatically reactivated
after a few seconds.
If you hear the audible warning signal, either switch off the APDs or reduce the light
intensity that reaches the APDs (e.g. by reducing the light intensity of the laser).
9.5
Trigger Unit
The trigger unit transfers electronic signals (like frame and line clocks for FLIM images)
from the SP8 scan head to the TCSPC counting device.
NOTICE
Light that is too intense may damage the APDs
Prevent a light intensity that is too high (due to too high laser intensity or
room illumination) on the APDs. Otherwise, the detectors can be
damaged irreparably.
Summary of Contents for TCS SP8 SMD
Page 1: ...10 Living up to Life User Manual Leica TCS SP8 SMD for FCS FLIM and FLCS ...
Page 4: ...4 Copyright ...
Page 14: ...14 Contents ...
Page 18: ...18 Intended Use ...
Page 20: ...20 Liability and Warranty ...
Page 28: ...28 General Safety Notes ...
Page 32: ...32 Additional Notes on Handling the System ...
Page 44: ...44 System Overview and Properties ...
Page 60: ...60 SMD Components Figure 31 DSN 102 Dual SPAD Power Supply ...
Page 80: ...80 Safety Features ...
Page 102: ...102 Switching On the System ...
Page 116: ...116 LAS AF ...
Page 214: ...214 Changing the Specimen ...
Page 216: ...216 Changing the Objective ...
Page 238: ...238 Switching Off the System ...
Page 242: ...242 Repairs and Service Work ...
Page 244: ...244 Maintenance ...
Page 246: ...246 Disassembly and Transport ...
Page 248: ...248 Disposal ...
Page 254: ...254 Contact ...
Page 256: ...256 Recommended Literature ...
Page 266: ...266 Appendix Figure 225 Declaration of conformity ...
Page 268: ...268 Appendix ...
Page 269: ......