Tektronix AFG1022 Technical Reference

AFG1000 Series Specifications and Performance Verification
31
Performance tests
6. Measure and record each level (A1 to A7) to the seventh harmonics of the
20 kHz sine wave.
7. Calculate the each B1 to B7, C1 to C7 value and the THD.
NOTE: When all the harmonic components are -62 dBm or less, the calculation
of THD can be skipped because it is THD < 0.2%.
8. Verify that the THD is less than 0.2%.
9. Repeat steps 1 through 8 for the channel 2 output.
Measurement
Function
Frequency
Fundamental
=
reference
2nd
3rd
4th
5th
6th
7th
sine
20.00 kHz
20 kHz
40 kHz
60 kHz
80 kHz
100 kHz
120 kHz
140 kHz
reading (dBm)
A1 =
A2 =
A3 =
A4 =
A5 =
A6 =
A7 =
reading - reference Bn =
An - A1 (dBc)
B1 = 0 B2 = B3 = B4 = B5 = B6 = B7 =
Cn = 10 Bn/20
C1 = 1
C2 =
C3 =
C4 =
C5 =
C6 =
C7 =
Measurement
2
2
1
n
n
C
THD
C
=
=
∑
THD =
Limit
< 0.2%
Sample: reading
1.5
dBm -58.5 dBm -58.5 dBm -63.5 dBm -58.5 dBm -63.5 dBm -63.5 dBm
reading - reference
0
-60 dBm
-60 dBm
-65 dBm
-60 dBm
-65 dBm
-65 dBm
Cn =
1.000
0.001
0.001
0.000562
0.001
0.000562
0.000562
2
2
1
n
n
C
THD
C
=
=
∑
0.1987%
Limit
< 0.2%

Tektronix AFG1022 Specifications

General

Brand	Tektronix
Model	AFG1022
Category	Inverter
Language	English