Tektronix AFG1062 - Page 29

AFG1000 Series Specifications and Performance Verification
19
Performance tests
Total Harmonic Distortion (THD) Test Record
Spectrum Analyzer reading
Fundamental
=
reference
2nd 3rd 4th 5th 6th 7th
Sine 20.0 kHz
20 kHz
40 kHz
60 kHz
80 kHz
100 kHz
120 kHz
140 kHz
CH1 reading (dBm)
A
1
=
A
2
=
A
3
=
A
4
=
A
5
=
A
6
=
A
7
=
reading - reference (A
n
- A
1
)
(dBc)
B
1
= 0
B
2
=
B
3
=
B
4
=
B
5
=
B
6
=
B
7
=
C
n
= 10
Bn/20
C
1
= 1
C
2
=
C
3
=
C
4
=
C
5
=
C
6
=
C
7
=
2
2
1
n
n
C
THD
C
=
=
∑
Limit
< 0.2%
CH2 reading (dBm)
A
1
=
A
2
=
A
3
=
A
4
=
A
5
=
A
6
=
A
7
=
reading - reference (A
n
- A
1
)
(dBc)
B
1
= 0
B
2
=
B
3
=
B
4
=
B
5
=
B
6
=
B
7
=
C
n
= 10
Bn/20
C
1
= 1
C
2
=
C
3
=
C
4
=
C
5
=
C
6
=
C
7
=
2
2
1
n
n
C
THD
C
=
=
∑
Limit
< 0.2%