Table 8-5. Computer Parallel Port Commands For Ttl Control Of Shutters - Sutter Instrument LB10-3 Operation Manual

shutter. Pin 14 can be set high to open the shutter by sending a value such as 0. The logic for
pin 16 is the reverse of pin 14. To open shutter B, send a value of 4 to the port. To close
shutter B, send 0 to the port. Since both shutters are controlled by the same port, you must
combine the values for the two shutters by addition if you have two shutters installed.

Table 8-5. Computer parallel port commands for TTL control of shutters.

The next chapter describes in more detail how state or position of Shutter A and B can be
controlled by TTL input.
OPEN
SHUTTER B SHUTTER B
SHUTTER B SHUTTER B
CLOSED
LAMBDA 10-3 OPERATION MANUAL – REV. 3.03 (20110829)
SHUTTER A SHUTTER A
SHUTTER A SHUTTER A
OPEN CLOSED
4 6
0 2
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