The Siglent SSA3000X spectrum analyzer can be configured to display amplitude and frequency with logarithmic (log) scaling.
Vertical (amplitude) scaling on a spectrum analyzer is typically shown in log scaling with dBm as units as a default.
The Horizontal (frequency) scaling is typically linear, but some applications prefer log frequency scaling.
To manually enable log frequency scaling:
1. Press Span on the front panel
2. Set the X-Scale value to Log
To remotely activate the log scaling, send the following SCPI command:
- LOG sets logarithmic
- LIN sets linear
To query the current horizontal scaling, send the following:
Figures 1 and 2 on the following page show how the change in scale will alter the displayed data and grid lines.
Figure 1: Screenshot of an SSA3000X with linear horizontal scaling.
Figure 2: Screenshot of an SSA3000X with log horizontal scaling.