User Manual

SIGLENT
SVA1000X Service Manual 17
Frequency Response Test
Specification
Preamp off
±0.8 dB
±0.4 dB, typ.
Preamp on
±0.9 dB
±0.5 dB, typ.
20 °C to 30 °C , attenuation = 20 dB, reference frequency 50 MHz
N-SMA
Power Meter
(NRP-Z91)
USB
SVA1000X
RF Generator
(SMB 100A)
RF OUT
Ref OUT
RF IN
TG OUT
Ref IN
Power divider
PC
BNC-BNC
N-SMA
N-SMA
Figure 3-2 Frequency response connections
Steps:
1. Connect the spectrum analyzer, signal generator and power meter as figure
3-2 shows
2. Set the signal generator to output a sine waveform with 50 MHz frequency
and -20 dBm amplitude and enable output
3. Read the measurement of the power meter record the result as reference
value P1
4. Configure the spectrum analyzer:
(a) Set the center frequency to 50 MHz
(b) Set the span to 1 MHz
(c) Set the attenuation to 20 dB
(d) Press Peak to find the maximum value and record as reference value
P2
5. Modify the output frequency of the signal generator at 100 kHz, 1 MHz, 10
MHz, 100 MHz, 1 GHz, 1.5 GHz
6. Read the measurement of the power meter record the result as A1,
SYSTEM ERROR = A1 – P1
7. Modify the center frequency of the spectrum analyzer so that it matches the
signal generator and find the peak value A2, calculate the GLOBAL