Ocean Optics FOS-2x2-TTL - Manual (Page 17)

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Chapter 3
Operating Instructions
Setting the Operating Mode
Operating the FOS unit requires setting its operating mode with the two switches on the unit’s front panel
to the appropriate positions (see Figure 3).
Figure 3: FOS Unit Switches
Switch (4) Position Switch (6) Position Result
L MANUAL Left Channel Open
TTL/DARK MANUAL Both Channels Closed
R MANUAL Right Channel Open
TTL/DARK TTL
Operation by external TTL signal:
High - Left Channel Open
Low - Right Channel Open
Note
Other switch positions are not defined.
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