ETS-Lindgren 2081 Turntable Series 1.2m/1.5m (Archived) - Manual (Page 27)

MODEL 2080 / 2081 TURNTABLE SERIES Operation
© ETS-LINDGREN L.P. – JANUARY 2003 23
REV C – PN 399228
selection. Pressing any of the remaining motion keys will return
the display to the current position and execute that motion.
Pressing the PARAM key again will return to the last displayed
parameter in the list, allowing easy transition between parameter
adjustment and device operation.
Once the desired limit, position or parameter is visible in the
display window, pressing INCRM, DECRM, or ENTER will
toggle into edit mode. The lowest adjustable digit will flash on
and off. Pressing the LOCAL key for that device will switch the
flashing digit to the next higher digit. In this way, it is possible to
rapidly adjust any digit of a multi-digit parameter or limit.
TURNTABLE ENCODER CALIBRATION
C Refers to the encoder calibration parameter. This setting is used
to convert the encoder count values returned from a motor base
into the corresponding centimeter or degree position reading. For
turntables, this represents the number of encoder counts per
revolution. The setting for the Model 2080/2081 Turntable Series
is: 3600
If the given value does not appear to work correctly, the encoder
calibration value can be determined using the following procedure:
1. Set the encoder calibration value to 3600.
2. Insure that the turntable is positioned to allow more than a full
revolution of travel in the clockwise direction and use the
STEP keys to run the turntable clockwise a few degrees to
remove any play in the table.
3. Mark the current location of the turntable against the ground
ring (masking tape works well), and set the current position
reading to 000.0.
4. Using the STEP keys, rotate the turntable clockwise until it is
again aligned with the mark on the ground ring. For best
results, the last motion should always be in the clockwise
direction to insure that any play in the gearing between the
motor and encoder is accounted for.
Archived 3/18/10