OPERATION
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Note: Subcarrier demodulation is only available for video demodulation and the four larger filter sizes
(200 kHz, 800 kHz, 6.375 MHz, 12.75 MHz) for audio demodulation.
Note: A peak trace is also available for the Demod Spectrum. From the Subcarrier Sub-Menu, select
the Peak: Off icon until it says Peak: Hold or Peak: Decay.
Subcarrier Scope
An oscilloscope display is available for displaying the demodulated subcarrier signal.
Enabling the Subcarrier Scope
1. From the Analyze Mode Menu, select Demod or press F1.
2. From the Demod Sub-Menu, select Scope or press F4. The Scope Sub-Menu will be displayed.
The controls on the left side of the sub-menu pertain to the oscilloscope view for the main
carrier demodulation. The controls on the right side of the sub-menu pertain to the oscilloscope
view for subcarrier demodulation (see page 72).
3. From the Scope Sub-Menu, select the Sub Scope icon to toggle the display of the subcarrier
oscilloscope.
Changing the Subcarrier Scope Display
1. From the Demod | Scope Sub-Menu, select the Untrig Roll icon (on the right side of the sub-
menu) to change the subcarrier scope trigger. With each press of the Untrig Roll icon the unit
will cycle through the available scope triggers: Rising Edge, Falling Edge, and Untriggered Roll.
2. The displayed grid can also be varied to optimize signal analysis. From the Time Div drop down
list that appears on the right side of the Scope Sub-Menu, select a value for the frequency of the
vertical grid lines.
3. From the Amp Div drop down list that appears on the right side of the Scope Sub-Menu, select
an amplification level for the horizontal grid lines: 1x, 2x, or 5x.
Signal Lists in Analyze Mode
Signal lists that are created in sweep mode are accessible in analyze mode to facilitate signal analysis.
Signal list functions in Analyze Mode are very similar to their Sweep Mode counterparts (see page 48).
These functions can be accessed in Analyze Mode by selecting Signals from the main Analyze Mode
menu or pressing F3. There are two sub-menus within the Signals Menu: Lists (F1) and Signals (F2).
The following functions are available in the Signals|Lists Sub-Menu:
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