Tektronix 1710J Series, Инструкция по эксплуатации, Страница: 53 / 252

Operating Basics
1710J-Series Waveform Monitors
2–7
0V
1.2
1.0
1.1
0.9
0.8
0.7
0.6
0.5
0.4
0.2
0.1
0
PAL
–0.3
+0.7
Tek 2% & 4% K FACTOR
Horizontal sync pulse
White level
Figure 2–4: Two-line color bar display in flat filter mode
Use the VERTICAL position to move the signal blanking level to the
graticule 0.3 V line for the 1711J or 0 IRE line for the 1710J.
Measure the amplitude of the horizontal sync pulse.
5. Measure White Level. The white level can vary with the signal source. For
example, NTSC color bar signals may be either 75% white or 100% white;
therefore, the white level may be at 75 IRE or 100 IRE depending on the
source. (In most cases the color bar is at 75% white.)
With the blanking level on the correct graticule line, measure the white level.
See Figure 2–4.
6. Measure Setup Level. (NTSC only) This measurement is for 1710J only.
Push and hold the HORIZONTAL SWEEP switch until the 1 LINE indicator
lights. This changes the display to a single line of color bar signal. See
Figure 2–5.