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Chapter 3
Power Entry
3.5.2
Main Supply
This supply provides digital circuit power for all functions except the laser module
and TEC. It also provides fan power.
3.6
Interlock Operation
The back panel laser input/output connector has interlock connections which must be
connected before the laser output will be enabled. See section 4.3.4 for additional
information.
3.6.1
Laser Interlock
On the laser input/output connector pins 1 and 2 form the interlock path. If there is
not a connection between these pins the laser output will not be enabled. When this
path is broken, the laser Interlock Error condition/event will be reported in the laser
Condition Status Register and the Laser Event Status Register.
This interlock is a safety feature for laser protection. It requires that the connecting
cable be secure before the laser output is enabled. A secure connection significantly
reduces the possibility of an intermittent open circuit to the laser drive current.
Transformer
Module
Transformer
Figure 20 - Power Supply Block Diagram
Principles of Operation
Rectifiers
and Filters
Rectifiers
and Filters
Rectifiers
and Filters
LDD Module
Regulators
Supply
TEC Module
Regulators
Supply
Main
Regulators
Supply
35
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