results
in
ASCI
I
allo
wing
the
terminal
program
to
b
e
used
as
a
debugger
In
order
to
reduce
the
n
um
b
er
of
b
ytes
sen
t
they
are
normally
transmitted
in
binary
Once
all
of
the
desired
con guration
is
set
the
host
will
send
an
R
signifying
the
run
mo
de
This
allo
ws
the
unit
to
run
con
tin
ually
analyzing
data
while
scanning
and
sending
out
the
serial
data
when
the
laser
is
out
of
the
scan
range
after
the
stop
and
b
efore
the
next
start
While
in
the
scan
range
a
simple
p
eak
nder
and
data
reduction
algorithm
is
running
The
reduced
data
stream
con
taining
only
parameters
for
v
alid
re ection
p
oin
ts
is
then
pac
k
etized
and
sen
t
out
as
RS
serial
data
Data
Reduction
and
P
eak
Finding
The
range nder
is
normally
set
up
as
sho
wn
in
Fig
where
a
matte blac
k
ba e
surrounds
the
pro
jection
area
V
ery
little
laser
ligh
t
returns
from
this
surface
allo
wing
hands
to
readily
stand
out
as
amplitude
p
eaks
that
can
b
e
easily
discriminated
b
y
a
xed
threshold Fig
A
simple
p
eak
nder
runs
while
the
scanner
is
in
the
scan
range
A
p
eak
in
the
data
is
determined
b
y
a
Manhattan
metric
i e
the
sum
of
the
absolute
v
alue
of
b
oth
the
in phase
and
quadrature
signals
When
the
sum
go
es
ab
o
v
e
the
threshold
lev
el
a
b
o
olean
is
set
signifying
that
y
ou
are
no
w
in
a
p
eak
The
time
of
the
start
of
the
p
eak
is
noted
While
in
the
p
eak
the
inphase
and
quadrature
signals
are
accum
ulated
When
the
Manhattan
discrimator
drops
b
elo
w
the
threshold
an
out of p
eak
state
is
set
The
n
um
b
er
of
p
eaks
is
incremen
ted
and
the
data
is
stored
The
time
of
the
highest
p
oin
t
of
the
p
eak
the
time
start
of
the
p
eak
the
ending
time
of
the
p
eak
the
maxim
um
v
alues
of
I
and
Q
along
with
the
total
sum
of
the
I
and
Q
c
hannels
are
stored
The
maxim
um
n
um
b
er
of
discrete
p
eaks
is
curren
tly
limited
to
in
the
rm
w
are
only
to
reduce
the
n
um
b
er
of
b
ytes
that
m
ust
b
e
sen
t
to
the
host
after
eac
h
scan
a
faster
data
transfer
w
ould
enable
more
p
eaks
Once
all
data
is
sen
t
out
this
pro
cess
rep
eats
Rather
than
determine
the
hand
lo
cations
from
p
eaks
in
the
re ected
amplitude
they
could
b
e
deriv
ed
b
y
discon
tin
uities
in
the
detected
range
sequence
Although
this
w
ould
remo
v
e
the
need
for
the
blac
k
ba e
around
the
screen
it
w
ould
require
more
complicated
em
b
edded
co
de
th
us
w
as
not
pursued
in
these
applications