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Home > Ordnance Documents and other related manuals > > Refernce Designators
Figure 1-13. Boresight Collimator Controls
Figure 1-14 LD/R Subassemblies

Controls And Functions of the Ground/ Vehicular Laser Locator Designator
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1.
Reference Designators.
Before proceeding with the functional description of the G/VLLD, it is
beneficial  to  identify  some  of  the  subassemblies  included  in  the
discussion.  The functional operation of the G/VLLD takes place primarily
through the interaction of the two major subassemblies within the LD/R.
These two major subassemblies are the electronics assembly and the
transceiver assembly.  Wire harness A1W1 electrically connects the two
subassemblies.  Figure 1-14 shows an exploded view of the LD/R with the
two subassemblies separated.
As shown in figure 1-14, the subassemblies have alphanumeric reference
designators.  The figure shows the electronics assembly designated Al and
the transceiver assembly designated A2.  Use these reference designators
to help you identify and locate the components of the LD/R.  Components
with  a  reference  designator  beginning  with  Al  correspond  to  the
electronics  assembly,  and  components  with  a  reference  designator
beginning with A2 correspond to the transceiver assembly.  Both the noun
names and the reference designators will be used in the description of
the functional operation.  These reference designators should help you
follow the signals from component to component.  Below are some of the
key components of the LD/R, listed by their noun name and reference
designator.
A1
Electronics assembly.
A1A1
Power supply card.
A1A2
Control logic card.
A1A3
Resolver-to-digital converter.
A2
Transceiver assembly.
A2A1
Optical bench assembly.
A2A2
Transceiver housing assembly.
A2A3
Blower assembly.
A2A4
Receiver card.
A21A1A
Reticle assembly.
A2A1A3
Display assembly.
A2A1A6
Energy control card.
2.
Block Diagram Theory.
The block diagram theory divides the LD/R into the six major functions.
The  six  functions  are  operationally  grouped,  but  not  necessarily
physically grouped.  For example, in the receiver function you find the
receiver card located in the transceiver assembly.
You also see the
microprocessor and the range counter in the control logic card, located
in the electronics assembly.  The use of reference designators will help
keep you focussed on what is happening in the system during operation.
The following paragraphs describe the six major operational functions.
19
OD1721






Western Governors University

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