User Manual

SIGLENT
SVA1000X Service Manual 19
Display Average Noise Level (DANL) Test
Specification
Frequency
RBW=10 Hz
Preamp Off
100 kHz ~1 MHz
-91 dBm, -97 dBm (typ.)
1 MHz~10 MHz
-114 dBm, -120 dBm (typ.)
10 MHz~1 GHz
-118 dBm, -124 dBm (typ.)
1 GHz~1.5 GHz
-111 dBm, -117 dBm (typ.)
Preamp On
100 kHz ~1 MHz
-110 dBm, -118 dBm (typ.)
1 MHz~10 MHz
-137 dBm, -142 dBm (typ.)
10 MHz~1 GHz
-140 dBm, -146 dBm (typ.)
1 GHz~1.5 GHz
-132 dBm, -138 dBm (typ.)
20 °C to 30 °C , attenuation = 0 dB, sample detector, trace average >50
SVA1000X
RF IN
TG OUT
50Ω Load
Figure 3-3 DANL verification connections
Step:
1. Connect a 50Ω load to the RF IN port of the spectrum analyzer as the figure
shows
2. Configure the spectrum analyzer:
(a) Set the start frequency to 100 kHz and the stop frequency to 1MHz
(b) Set the RBW to 10Hz and the VBW to 1Hz
(c) Set the detect type to Sample
3. Press Trace -> Avg Times and wait for trace average
4. Press Peak to find the maximum noise level of this frequency range, record
the marker value N
5. Change the frequency range according to the specification table and set
the RBW to suitable value, repeat step 2 to 5 and test other frequency
range.
Record:
Frequency
RBW=10 Hz
Amplitude
Pass/Fail
Preamp
500.5 kHz
-91 dBm, -97 dBm (typ.)