57
DRU10002 (REV 004 / JAN 2017)
4.7
Rotation Rate Control
CAUTION:
Always turn the rotation rate control knob completely
counterclockwise (towards the zero rotation rate position) before
turning on the rotator.
ATTENTION:
Tournez toujours le bouton de commande de la vitesse de rotation
complètement dans le sens inverse des aiguilles d’une montre (vers la position
vitesse de rotation égale à zéro) avant de mettre le rotateur en marche.
Note:
The fully counterclockwise position corresponds (nominally) to a
rotation rate of zero. Even with the knob in this position, there may
be some residual rotation (typically less than 10 RPM) in either the
clockwise or counter-clockwise direction.
Always begin each session using the rotator with the power turned off and the
rotation rate control knob in the fully counterclockwise position. The fully
counterclockwise position corresponds to the slowest rotation rate, and it is
always safest to turn on the rotator with the knob in this position.
4.7.1
Manual Control of Rotation
To rotate the electrode under manual control, turn on the control unit power and
slowly turn the rotation rate control knob clockwise. As the knob is turned
clockwise, the rotation rate increases and the display on the control unit shows
the rotation rate.
4.7.2
Monitoring the Rotation Rate
The rotation rate is always displayed on the front panel, but it can also be
monitored at the output jacks on the front panel of the control unit. The signal
presented at the output jacks is a voltage which is proportional to the rotation
rate. The proportionality ratio is 1.0 mV/RPM.
Note:
The rotation rate is controlled to within 1.0% of the display value
selected using the rotation rate control knob. It is normal for the last
one or two digits on the display to flicker.
Summary of Contents for MSR 636A
Page 2: ......