Tektronix Camcorder 1780-R Manual de usuario descargar pdf (Pagina 114)

Measurements

4–2

1780R-Series Operator’s Manual

measurements, touch the <GO TO DIFF PHASE> and <GO TO

DIFF GAIN> areas of the screen to alternate between those two

measurement modes.

To perform additional measurements, push the MEASURE button

and touch the next desired measurement.

Differential Phase Measurement

Enter DIFF PHASE Mode

Push the MEASURE button to enable the Measurement menu,

shown in Figure 4–1.

Touch <DIFF PHASE> on the screen.

The DIFF PHASE menu is displayed on the left CRT, with

demodulator output displayed on the right CRT, as shown in

Figure 4–2.

The instrument is now configured as specified in Table 4–1.

Large knob function is phase shift, and PHASE SHIFT LED lights.

Exit DIFF PHASE Mode

To exit DIFF PHASE mode, push the MEASURE button again. All

instrument settings return to previous state.

To move from DIFF PHASE mode to DIFF GAIN, touch the <GO

TO DIFF GAIN> area of the screen.

Horizontal positions, Vertical positions, and gain settings defined

while in DIFF PHASE mode will be stored when exiting, and

reinstated when this mode is selected again.

DIFF PHASE Menu Selections

NOTE. While operating in Line Select mode, noise reduction operates

only with full field test signals.