Tektronix Camcorder 1780-R Bedienungsanleitung PDF herunterladen (Seite 79)

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.

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