Sutter Instrument Lambda 10-3, Operation Manual

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LAMBDA 10-3 OPERATION MANUAL – REV. 3.03 (20110829)
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resonance frequency (see Appendix A). Selecting a higher or lower speed will generally solve
this problem.
11.2.4 11.2.4 11.2.4 11.2.4 Movement Errors after Successive Moves Movement Errors after Successive Moves Movement Errors after Successive Moves Movement Errors after Successive Moves
With an optimal combination of speed and load-weight, it may be possible to give a new
command as soon as the last move is complete. On the other hand, if the selected speed is
improper for the load, as outlined above, oscillations (too small to be detected as movement
errors) may be sufficient to carry-over from the end of one move to the beginning of the next.
This can occur even when the delay between moves is more than 50 msec. It is possible, then,
to experience movement errors after changing only the delay interval between moves. If you
are making moves with a very short delay interval and errors are detected with some
frequency, it is wise to consider this possibility before addressing the
selected speed
. Try
using a long time interval (1 second) between moves to test whether the length of the
interval is contributing to the error rate.
11.3 11.3 11.3 11.3 Helpful Tips about Filter Wheel Movement Errors Helpful Tips about Filter Wheel Movement Errors Helpful Tips about Filter Wheel Movement Errors Helpful Tips about Filter Wheel Movement Errors
Always determine the appropriate speed by using the same filter wheel load weight and
Always determine the appropriate speed by using the same filter wheel load weight and Always determine the appropriate speed by using the same filter wheel load weight and
Always determine the appropriate speed by using the same filter wheel load weight and
timing intervals that will be required in your experimental protocol.
timing intervals that will be required in your experimental protocol. timing intervals that will be required in your experimental protocol. timing intervals that will be required in your experimental protocol. There is a tendency for
users to test the LAMBDA 10
LAMBDA 10 LAMBDA 10 LAMBDA 10----3 3 3 3 in their system using little, if any, delay between commands
even though a pause occurs during an actual experiment.
If your application requires the delay between moves to be minimal, If your application requires the delay between moves to be minimal, If your application requires the delay between moves to be minimal, If your application requires the delay between moves to be minimal, experiment with small
changes in the delay to find the best value and then keep the delay at that value. If your
protocol precludes you from increasing the delay, use a slower speed to eliminate the
oscillation. If you cannot use a slower speed, you must reduce the filter wheel weight to
eliminate the movement errors.
If the weight is clearly excessive for the chosen speed
If the weight is clearly excessive for the chosen speed If the weight is clearly excessive for the chosen speed
If the weight is clearly excessive for the chosen speed select a slower speed. Make sure you
also address the question of the delay interval before you become very serious about the
speed of operation.
Remember, unless having a short delay interval is important the solution to frequent
movement errors will usually require some compromise between having fast filter switching
speed and having the convenience of keeping many filters loaded.
11.4
11.4 11.4
11.4 SmartShutter Movement Errors: Causes and Solutions
SmartShutter Movement Errors: Causes and Solutions SmartShutter Movement Errors: Causes and Solutions
SmartShutter Movement Errors: Causes and Solutions
The SmartShutter is optimized for the fast shutter action. One element of the
SmartShutter’s overall design that contributes to its superior performance is the acceleration
and deceleration profiles that are pre-programmed into the microprocessor commanding the
motor. There is a separate profile for each mode of operation. The motor commands produced
from these profiles result in smooth and efficient SmartShutter movements.
11.4.1 11.4.1 11.4.1 11.4.1 SmartShutter Movement Errors after Successive Moves SmartShutter Movement Errors after Successive Moves SmartShutter Movement Errors after Successive Moves SmartShutter Movement Errors after Successive Moves
The SmartShutter operates with great reliability for each selectable type of action. It is
possible, however, to produce movement failures by combining multiple actions with short
intervals between the actions. As each action ends, there may be a small, brief oscillation
about the new blade location. This may carry-over from the end of one move to the beginning