Crosshead Jog Control
A Crosshead Jog Control unit is available for moving
the crosshead up and down in small increments or at
slow speed while loading specimens or installing grips
and fixtures. The Jog Control unit is a small, hand-held
box on the end of a cable, containing a rocker switch.
When the switch is pressed in the direction of the UP ar-
row, the crosshead will move at a constant speed in an
up direction as long as the switch is held. There is a simi-
lar action in the down direction when the switch is held
in the direction of the DOWN arrow.
The Jog Control parallels the action of the UP and
DOWN switches on the Main Panel, but may be more
convenient to use since it can be moved close to test
space on the load frame while installing grips or loading
specimens.
System
Operation
Crosshead Jog Control
5-37
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