Agilent Technologies TwisTorr 305 FS User Manual page 142

8 Technical Information
How to Use by Front Panel
Black rectangles as shown below may be displayed at any time in the first
and last box of the bottom line of the display (opposite the LS / AG / R1 /
R2 captions). The meaning of these rectangles is as follows:
LS → the controller is at LOW SPEED
AG → the Gauge is connected to the controller
R1 → relay (set point) R1 is active
R2 → relay (set point) R2 is active
Figure 31
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