Tektronix 1720 User Manual

Checks and Adjustments
1720/1721
5–25
15. Adjust Line Select Focus
With a 1730-Series Waveform Monitor:
a. Connect an Auxiliary cable between the 1720/1721 and a 1730-Series of
the same color standard.
b. loop-through connect the color bar signal to both the waveform monitor
and the 1720/1721.
c. Set the 1730-Series Waveform Monitor for line select and display one
line from the active part of the field (after the vertical interval).
d. Push the 1720/1721 AUXILIARY button.
e. Adjust R244 (LS Focus) for the best 1720/1721 display.
Without a 1730-Series Waveform Monitor:
f. Connect the output of the Function Generator to pin 7 of the 1720/1721
rear-panel AUXILIARY connector.
g. Set the Function Generator for a narrow, negative-going, 10 V, 1 kHz
pulse.
h. Connect the color bars output from the Television Test Signal Generator
to the 1720/1721 and terminate in 75Ω.
i. Set the 1720/1721 for VECT and adjust INTENS and FOCUS for the
best display.
j. Push the 1720/1721 AUXILIARY button.
k. Adjust R244 (LS Focus) for the best 1720/1721 display.

Tektronix 1720 Specifications

General

Brand	Tektronix
Model	1720
Category	Measuring Instruments
Language	English