User Manual

SIGLENT
26 SVA1000X Service Manual
Second Harmonic Distortion Test
Specification
Second Harmonic Distortion Test
< -65 dBc
20 °C to 30 °C , fc = 50MHz, attenuation = 0 dB, preamp off, mixer level = -30
dBm
RF Generator
(SMB 100A)
RF OUT
Ref OUT
Low Pass Filter
N-SMA N-SMA
Power Meter
(NRP-Z91)
(a)
RF Generator
(SMB 100A)
RF OUT
Ref OUT
Low Pass Filter
SVA1000X
RF IN
TG OUT
Ref IN
N-SMA N-SMA
BNC-BNC
(b)
Figure 3-8 connecting test instruments for Second Harmonic Distortion Test
Steps:
1. Connect the RF generator, 50MHz low pass filter and power meter as figure
3-8(a) shows
2. Set the output frequency of the RF generator to 50 MHz and the amplitude
to -30 dBm. Observe the measurement value of the power meter. Adjust
the output amplitude of the RF generator until the reading of the power
meter becomes -30 dBm.
3. Connect the RF generator, 50MHz low pass filter and spectrum analyzer as
figure 3-8(b) shows. Enable the output of the RF generator.