User Manual

SIGLENT
22 SVA1000X Service Manual
TOI Test
Specification
IIP3
+8 dBm
fc≥50 MHz, two -20 dBm tones at input mixer spaced by 100 kHz, attenuation
= 0 dB, preamp off, 20 °C to 30 °C
N-SMA
SVA1000X
RF Generator
(SMB 100A)
RF OUT
Ref OUT
RF IN
TG OUT
Ref IN
Power divider
BNC-BNC
N-SMA
N-SMA
RF Generator
(SMB 100A)
RF OUT
Ref OUT
Ref IN
BNC-BNC
Figure 3-5 TOI verification connections
Step
1. Connect double signal generators to a power divider and the output of the
divider to RF IN port of spectrum analyzer
2. Configure the spectrum analyzer:
(a) Set the center frequency to 1 GHz
(b) Set the span to 1 MHz
(c) Set the RBW to 10 kHz
(d) Set the attenuation = 0 dB
3. Set the signal generator A to output a sine waveform with 1000 MHz
frequency and -20 dBm amplitude and enable output
4. Set the signal generator B to output a sine waveform with 1000.1 MHz
frequency and -20 dBm amplitude and enable output
5. Press Trace -> avg Times 100, and wait for trace average
6. Press Peak to find the maximum value, then change the marker type to
delta and press Next Peak twice, record delta amplitude value DELTA
7. IIP3 = -20dBm – DELTA/2, check if the calculate result ≥ +8 dB
Record:
Offset
DELTA
IIP3
Pass/Fail
500.5 MHz
1000.5 MHz