Tektronix 1730 Series, Instruction Manual

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1730–Series Operating Instructions
2–15
60
40
20
–20
–40
NTSC
75%
100%
2% & 4% K FACTOR
7.5
12.5%
Tek
a.
60
40
20
–20
–40
NTSC
7.5
75%
100%
2% & 4% K FACTOR
Tek
b.
60
40
20
–20
–40
NTSC
7.5
75%
100%
2% & 4% K FACTOR
Tek
c.
12.5%
12.5%
Figure 2-7: Checking timing with the internal calibrator signal: a) 2–line
display. b) 2–line display magnified. c) 1–line display.
Push the GAIN switch and note that the VAR indicator is lit. Also note the
range of amplitude (signal amplitude greater than the scale at one extreme and
considerably smaller at the other) that is obtained with the control.
Push the button and check that the X5 indicator lights. Check for a large
increase in gain. (It can be determined that this is a X5 gain increase by setting
the signal base line on the graticule 0 IRE (NTSC and PAL–M) or 300 mV