User`s guide

Performance Tests Performance Tests
Agilent 81618A/9A and Agilent 81623B/4B/6B/8B Optical Heads, Fourth Edition
55
Calculations
Conversion [dBm] → [mW]
Calculation as given Calculation as given
n Ref / R DUT / D Relation1 / A Relation2 / B Non-Linearity
[mW] [mW]
= A
n
*B
n
(NL
n±1
+1) - 1
[%]
1 1,90919E-05 8,76455761 0,2199125
= R
n+1
/R
n
4,5505092
= D
n
/D
n+1
0,1
2 4,19856E-06 1,926060834
3 1,87845E-05 1,928590397 1,0003454 0,9995626 0,03
4 1,8791E-05 1,929434323 0,1006955 9,9275024 0,04
5 1,89217E-06 0,194352441
6 1,8896E-05 0,194455396 1,0003685 0,9995166 0,08
7 1,8903E-05 0,194549447 0,1000046 10,002994 0,09
8 1,89038E-06 0,019449122
9 1,88751E-05 0,019471526 1,000668 0,9998619 0,05
10 1,88877E-05 0,019474217 Reference Level 0,00
11 1,89322E-06 0,00195245 9,9765412
= R
n-1
/R
n
0,1002582
= D
n
/D
n-1
0,02
12 1,8916E-05 0,00195596
13 1,89156E-05 0,001955555 1,000023 0,9997928 0,01
14 1,89078E-06 0,000195479 10,004146 0,0999609 0,01
15 1,89714E-05 0,000188235
16 1,89692E-05 0,0001882 1,0001151 0,99981581 0,00
17 1,93495E-06 1,92044E-05 9,803474 0,1013767 0,03
18 1,93593E-05 1,92132E-05
19 1,93997E-05 1,92026E-05 1,001013651 0,9994475 0,08
20 1,93464E-06 1,92176E-06 9,996546719 0,1000783 0,13
: The Nonlinearity is calculated recursively using n=10 as reference
point. The formula is:
where NL
n+1
or NL
n-1
is the previously calculated non-linearity value. For
n=1, 4, 7 the values are NL
n+2
, while they are NL
n-2
for n=13, 16, 19.
NOTE