ETS-Lindgren 2081 Turntable Manual (Series 2081-2.0, 2081-2.5, 2081-3.0, 2081-4.0, 2081-5.0, 2081-6.0) - (Archived) - Manual (Page 22)

Operation MODEL 2081 TURNTABLE SERIES
18 © ETS-LINDGREN L.P. – JANUARY 2003
REV D – PN 399212
CHANGING ROTATION SPEED
The ETS-Lindgren two-speed turntable is designed to shift speeds
at a standstill or during rotation. To change rotational speed,
simply depress the POLAR/SPEED button on the front panel of the
Model 2090 Controller. (Refer to the controller manual for more
information). Changing speed on the turntable is also available
through the IEEE-488 GPIB interface.
The shift from high to low speed as well as from low to high speed
should be a relatively smooth transition. A smooth pole changer is
utilized in the motor control assembly which compensates for
changes in torque when switching speeds. No adjustments are
necessary.
The ETS-Lindgren optional variable speed drive provides smooth
speed adjustment throughout the range of adjustment. A variable
frequency drive provides continuous speed adjustment with high
reliability. Adjustment of the turntable’s speed is facilitated by the
Model 2090 Controller and these operations are discussed in detail
in the Model 2090 Controller manual.
Archived 3/18/10