Operating Instructions
1780R-Series Operator’s Manual
3–27
WFM + CAL
NOTE. Switch function is further described in Section 2.
Enter WFM+CAL Mode
Select the WFM+CAL mode of operation by pushing the WFM /
WFM+CAL button, shown in Figure 3–11, until the WFM+CAL
LED lights. Two pushes may be required, depending on the previous
condition.
The WFM+CAL display appears on the right CRT. Sample readouts
are shown in Figures 3–13 and 3–14.
General WFM+CAL Information
The WFM+CAL mode provides an accurate measurement tool,
which can be used to measure such things as burst amplitude, sync
tip to white bar amplitude, and color bar amplitude.
The WFM+CAL signal consists of a video signal superimposed on a
calibrator signal. The video signal is displayed twice, with one
display offset from the other by the voltage level of the calibrator.
When operating in the <VAR> mode, the large knob will vary the
Calibrator amplitude, allowing accurate amplitude measurement
over a continuous range; when operating in <FIX>, it will not. Fixed
Calibrator amplitude is selected on page 1 of the Configure menu.
Operating Instructions
1780R-Series Operator’s Manual
3–27
WFM + CAL
NOTE. Switch function is further described in Section 2.
Enter WFM+CAL Mode
Select the WFM+CAL mode of operation by pushing the WFM /
WFM+CAL button, shown in Figure 3–11, until the WFM+CAL
LED lights. Two pushes may be required, depending on the previous
condition.
The WFM+CAL display appears on the right CRT. Sample readouts
are shown in Figures 3–13 and 3–14.
General WFM+CAL Information
The WFM+CAL mode provides an accurate measurement tool,
which can be used to measure such things as burst amplitude, sync
tip to white bar amplitude, and color bar amplitude.
The WFM+CAL signal consists of a video signal superimposed on a
calibrator signal. The video signal is displayed twice, with one
display offset from the other by the voltage level of the calibrator.
When operating in the <VAR> mode, the large knob will vary the
Calibrator amplitude, allowing accurate amplitude measurement
over a continuous range; when operating in <FIX>, it will not. Fixed
Calibrator amplitude is selected on page 1 of the Configure menu.
