Components and Functions (Theory)
5-16 Invenia ABUS 2.0 – System Setup and Basic Service Manual
4700-0043-00 Rev. 4
1. Scan Arm positioning (manual height adjustment by operator)
Operator places the Scan Head Assembly and Transducer in
position. This involves vertical movement of the Scan Arm. The
Scan Arm is attached to the weight assembly at its base, so this
adjustment moves the entire weight assembly up or down as a
whole. However, it does not yet adjust weight.
2. Compression setting (operator command causes ABUS to
adjust weight)
The operator may now press either of the pressure adjustment
buttons to command the ABUS to increase or decrease
pressure.
This action first locks the vertical position of the Scan Arm and
the weight mechanism attached at its base, and then balances
the weights to create the desired compression step value.
Vertical locking
The system does vertical locking so the Scan Head Assembly
cannot move vertically during the scan. Also, the system sends
a signal commanding the Ball Joint to lock position, so that the
Scan Head cannot rotate during the scan.
Weight balancing
After vertical locking, the system then balances the weights in
the Tower to provide the desired compression value (which can
be one of three weight 'steps'). The balancing is done by
adjusting positions of the weights within the weight assembly.
3. Start Scan
a. Operator presses the Scan Button
b. ABUS locks the current vertical position of the Scan Arm.
c. The computer begins the scan.
At any time during the scan, the operator can release the locking
of the Lower Weight by pressing the Abort Button (the red button
located on the left-hand arm of the Scan Head Assembly). Then
the Scan Arm is free to move.
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