LAMBDA DG-4 & DG-5 OPERATION MANUAL – REV.
3.05C
(
20150414
)
32
Press the 1 key to start RUN the RING BUFFER. If you have failed to set a triggered
operational mode, you will see the following error message and the RING BUFFER will not
RUN.
If a “triggered” operational mode has been selected the following status message will be
displayed (MOVE ON SYNC, INHIBITED BY STROBE mode is used in this example).
To exit the buffer run, simply hold the LOCAL button down. The controller will not recognize
the key press unless it is active just after a filter change has been triggered.
3.7.9
Turbo-Blanking Mode
[MODE/2]
As the optical pathway is transitioning between two FILTER POSITIONS that are not
adjacent to one another, the Input Galvanometer must briefly direct the light through any
filter(s) intermediate to the desired FILTER POSITION. Under normal operation, the
Output Galvanometer moves in phase with the Input Galvanometer and, therefore,
maintains the optical pathway to the Light Guide Port as the filter change occurs. This
results in a brief output of light at an undesired wavelength prior to arriving at the selected
FILTER POSITION. This problem can usually be avoided by placing filters in adjacent
FILTER POSITIONS when it is known in advance that you will only want to switch between
those two wavelengths. This may not be a practical solution for several situations. The
TURBO-BLANKING operational mode eliminates the transmission of undesired wavelengths
during filter changes by forcing the Input and Output Galvanometers to move out of phase
with one another. In this way, the optical pathway to the Light Guide Port is broken until the
Input Galvanometer has arrived at the selected FILTER POSITION and the Output
Galvanometer catches up with it. This feature does increase the time required for switching,
though. This operational mode is selected by pressing the MODE key. The following menu
will be displayed:
To display the TURBO-BLANKING menu shown below, press 2.
ERROR! A CONTROL MODE MUST BE SELECTED
BEFORE YOU RUN THE RING BUFFER
FILTER SEQUENCE FROM RING BUFFER
MOVE ON SYNC/STROBE
0=EXIT, 1=NEXT PAGE, 2 = TURBO BLANKING
3 = DISPLAY THE FIRST 4 FILTER VALUES
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