Chapter 3: Using Your Product
RMS 8424S User Manual
3.6 Display Aspect Ratio
First, ensure the monitor power on and in normal operation.
Specific operations are as follows:
1. Push the “RATIO” button.
2. Rotate the knob to choose the aspect ratio, aspect ratio has two options, 16:9 and 4:3.
3. Push the knob to confirm.