Sutter Instrument Lambda 10-3, Руководство по эксплуатации

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LAMBDA 10-3 OPERATION MANUAL – REV. 3.03 (20110829)
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Error Line (Pin #12). Error Line (Pin #12). Error Line (Pin #12). Error Line (Pin #12). — — — — The ERROR ERROR ERROR ERROR signal indicates that an error has been detected
and error recovery is in progress. The controller uses optical and magnetic sensors to
verify that the correct filter is in position. If a command for a new filter is received and
the correct new filter is not in position at the end of the change sequence, the sensors will
indicate this to the controller. The controller will then set the ERROR
ERROR ERROR ERROR signal high and
enter the error recovery mode. The BUSY BUSY BUSY BUSY line will also be set high.
In the ERROR
ERROR ERROR
ERROR recovery mode, the wheel is rotated continuously until the sensors indicate
that Filter 0 (zero) is in position. The wheel will then make a slow move to put the correct
filter in position. The BUSY
BUSY BUSY BUSY line will stay high until the correct filter is in position, but the
ERROR ERROR ERROR ERROR signal will stay high only until Filter 0 (zero) is in position.
8.4 8.4 8.4 8.4 Strategies for Controlling the Lambda 10 Strategies for Controlling the Lambda 10 Strategies for Controlling the Lambda 10 Strategies for Controlling the Lambda 10----3 via the Parallel Port 3 via the Parallel Port 3 via the Parallel Port 3 via the Parallel Port
8.4.1 8.4.1 8.4.1 8.4.1 Using Input Lines Only Using Input Lines Only Using Input Lines Only Using Input Lines Only
The filter wheel may be controlled using only the eight input lines and ignoring the BUS BUS BUS BUSY Y Y Y
and ERROR ERROR ERROR ERROR output lines from the controller. This may be desired to simplify the code
required to execute your experimental protocol and would be particularly easy when using a
protocol that requires switching only between adjacent filter positions, since the time for
each change would be the same. Successful use of this strategy requires the following:
The fastest speed that allows execution of your protocol without errors must first be
determined. If the filter wheel weight is not changed, the movement times will remain
very consistent and the ERROR
ERROR ERROR
ERROR line can be ignored.
The time required to complete the longest move must be estimated using the speed
determined above. This estimate can be made using Table 4-1. Unless the number of
filter positions moved is increased in the protocol, the BUSY
BUSY BUSY BUSY line in a single wheel system
can then be ignored.
NOTE: On power NOTE: On power NOTE: On power NOTE: On power----up, the remote computer should not send its initial command until the up, the remote computer should not send its initial command until the up, the remote computer should not send its initial command until the up, the remote computer should not send its initial command until the
filter wheel reaches its HOME position.
filter wheel reaches its HOME position. filter wheel reaches its HOME position.
filter wheel reaches its HOME position.
8.4.2
8.4.2 8.4.2
8.4.2 Us
Us Us
Using Fewer than Eight Input Lines
ing Fewer than Eight Input Lines ing Fewer than Eight Input Lines
ing Fewer than Eight Input Lines
In some applications, not all of the eight input lines would have to be connected to the host
computer. It is likely that the same speed will be used at all times with a given set of filters.
Thus, the three lines that control speed could be directly wired so that the correct speed is
always set. The direct wiring could even be made through a switch so that the speed could be
changed if desired. If fewer than 9 of the ten filter positions will be used, it may be possible to
direct wire some of the filter control lines, as well. With only one line, it is possible to select
between two positions; with two lines, four positions are allowed, and three lines allows eight
positions.
In the extreme case, then, where a protocol requiring the switching between only two filter
positions is used, only a single logic level input line from the host computer to the controller
(together with direct-wired connections to the other 7 lines) would be sufficient.