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Model
5528A
Distance Measurements
ERROR BUDGET WORKSHEET
A
B
C
Accuracy
Accuracy
Ippm)
(Absolute)
("
A
n
X
lensth of
travel)
TOTAL
REQUIRED
ACCU RACY
1.
Measurement
Axis:
X-
2.
length
of
travel
:
!i08I11M
3.
Required
lase
r
System
accuracy:
xxxxxx
)(XX)(XXXX
O.~
M AXIMUM ERROR
MACNITUDES
••
Veloci
ty of
light
Compensation
I.
!i
O
..
De>OIO
Column "A" values
for
HP 10751 Air
Sensor
1.3
ppm for 19.5 to
20.5°C
1.5
ppm
for
15 to
25°C
2.6
ppm
for
0 to
40°C
S.
Material Temp
Compensation
1.
2
0.aJ061
Column
" A"
values
for
HP
10757 Material Sensor
± 0.10°C
when
ca
l match
adjusted
±
O.35°C
when
unadjusted
Type of
material
:
Sr_L
K
=
Ma
terial
II. 7r,Pm/OC
Expansion
eoeH:
6.
Deadpath (assume none
)
1
0
1
1
0
1
7.
Laser
System
limitations (0.1
ppm)
0.1
(),OOOO5
8.
Cosine
Error
(52/802)
ppm
O.()~
0.0000/
9.
Total
Errors
("4"
through
"
9"
)
XX)(XXX
O.O(J/47 0.00147""
O
.
Difference
between Required
accuracy and TOlal
Errors
?OOZ77",m
(line
3
-
line
9)
XX)()(XX
XXXXXXXX
FIgure
6
~
14.
Error
Budget
Worksheet - Example
6-30
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