Use frequency blanking when the measured frequency must not appear on the screen display for security or proprietary reasons. Below, Figure: Frequency Blanking OFF shows a normal display with five reference markers and their associated frequencies.
Frequency Blanking OFF
Trace display with five markers and frequencies and frequencies displayed.
After frequency blanking is implemented, the frequency values and units are replaced with XXXX as shown below in Figure: Frequency Blanking ON.
Frequency Blanking ON
Trace display with five markers and frequencies blanked.
Frequency Blanking Procedure
1. Setup the number of channels, number of traces, and the trace displays as required.
2. Save the setup as a setup file by opening the SAVE SETUP dialog box.
• MENU BAR | File | Save Setup | SAVE SETUP Dialog Box
Save the Setup
3. Save the setup with a memorable file name as one of the file types below.
• Active Channel Setup & Cal (.chx)
• Active Channel Setup (.stx)
• All Channel Setup and Cal (.cha)
• Active Channel Setup (.sta)
Blank the Frequency Display
4. On the right side menu, navigate to the Frequency Blanking button:
• MAIN | System | SYSTEM | Utility | UTILITY | Frequency Blanking
• The Frequency Blanking button is a one-way toggle button.
5. Click the Frequency Blanking button.
• All displayed frequency values and units are blanked and replaced with XXXX as shown above in Figure: Frequency Blanking ON above.
Restore the Frequency Display
6. Use the Preset function to return the instrument to its prior setting. Use one of the following methods:
• Preset Key
• ICON TOOLBAR | Preset icon
• MENU BAR | Utilities | Preset
7. The instrument is restored to its prior configuration state and frequency values and units are again displayed as in Figure: Frequency Blanking OFF above.
