Tektronix 1730 Series, Instruction Manual

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1730–Series Operating Instructions
2–13
100
80
60
40
20
–20
–40
NTSC
7.5
12.5%
0%
75%
100%
2% & 4% K FACTOR
Tek
Figure 2-5: Checking vertical gain calibration with the 1730–Series internal
calibrator (CAL) reference.
7. Select Input
The AB switch selects the rear–panel Channel A or Channel B inputs. Position
the color bar waveform so that the blanking level is at the –40 IRE (0 V)
graticule line and the sync pulses are at each end of the graticule.
Select the Channel B input. Note that the linearity waveform is displayed.
Push and hold the INPUT button until both the color bar and linearity waveforms
are displayed. See Figure 2-6. Check that both the CH–A and CH–B front–pan-
el indicators are on.
Push the switch to return to the Channel A (color bar) display.