5 - 14 WS80A Service Manual
• The main function of the Analog Controlboard is to control the motor of 3D Probe, to
supply clocks to the entire system and to monitor the status of power.
• Motor Partcontrols the stepping motor inside the 3D Probe.
• HV Filter is a high voltage filter used in BF.
• Clock Partgenerates system Clock 61.6Mhz used in BF and BE.
• Pulser Sensing Partmonitors the status of High Voltage and current used in the BF
board.
• ATGC Partsupports analog time gain control curve used in BF.
• AC Powergenerates power for the AC & PSA board.
• Probe Part checks Probe port selection,
• Probe ID read, and Probe Insert of the PSA board at all times.
▌ Specification
• 3D Probe Motor Driver
• System Clock Drive
• Pulser Voltage Sensing
• HV Mux Sensing
• ATGC
• AC Power
• Probe Check (ID/Insert/Port)
▌ Operational Principles
3D Probe works as the Stepping Motor operates to run 3D Mode. Motor Board controls its feed
back with the SIN and COS wave which have a phase of 90
o
. In this case, 3D Probe gives a
Null Position signalto the Motor Board and the Motor Board sends the One Frame signal, a
standard signal to acquire 3D Image, to the BE Board.
It monitors the voltage of HV Power in the BF Board and sends it to PC.
It provides the ATGC Curve to the BF Board.
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