User Manual

SIGLENT
SVA1000X Service Manual 21
Phase Noise Test
Specification
Phase noise
<-95 dBc/Hz @10 kHz offset, <-99 dBc/Hz (typ.)
<-96 dBc/Hz @100 kHz offset,<-98 dBc/Hz (typ.)
<-115 dBc/Hz @1 MHz offset, <-120 dBc/Hz (typ.)
20 °C to 30 °C , attenuation = 0 dB, fc = 1 GHz
N-SMA
SVA1000X
RF Generator
(SMB 100A)
RF OUT
Ref OUT
RF IN
TG OUT
Ref IN
BNC-BNC
Figure 3-4 Phase noise verification connections
Step:
1. Connect the signal generator and spectrum analyzer as figure 3-4 shows
2. Configure the spectrum analyzer:
(a) Set the center frequency to 1 GHz
(b) Set the span to 50 kHz
(c) Set the RBW to 100 Hz
(d) Set the attenuation = 0 dB
(e) Set the detect type to Sample
3. Set the signal generator to output a sine waveform with 1000 MHz
frequency and -20 dBm amplitude and enable the output
4. Press Trace -> avg Times 100 and wait for trace average
5. Press peak to find the maximum value, record the peak value P1
6. Change marker type to delta and input 10 kHz, press Marker Fn -> Noise
Marker, record the marker value P2
7. Phase noise = P2 - P1, compare the calculate result with specification
Record:
Offset @1 GHz
P1
P2
P2 - P1
Pass/Fail
10 kHz
100 kHz
1 MHz