Tektronix 2247A

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Performance Check Procedure
6. Trigger LEVEL Control Range
a. Set:
Trigger MODE AUTO (not Em
AUTO LEVEL) t
Trigger LEVEL Fully cow font
A INTEN For a good
viewing bes
Intensity t
lea
b. Remove 10X and 2X BNC attenuators from the test signal path.
c. Increase leveled sine-wave generator output level until a stably trig- |
gered display Is Just obtainable. _
d. Set Trigger LEVEL fully cw.
e. Set leveled sine-wave generator output for a stable display (If =
necessary).
f. Set CH 1 VOLTS/DIV to1V.
g. CHECK—that the CH 1 signal display amplitude is four divisions or
more (peak-to-peak). Note that the signal is not triggered.
h. Disconnect the test setup from the 2247A.
7. TV Field Trigger Sensitivity
a. Set:
Vertical MODE CH 2 (CH 1 off)
CH 2 VOLTS/DIV 1Vv "
SEC/DIV 0.2 ms
Trigger MODE TV FIELD
Trigger SLOPE “LU (negative-
going) a
b. Connect TV signal generator (TSG-100) video output to the CH 2 Input
via a 50 1 BNC cable.
c. Set CH 2 VAR VOLTS/DIV control for a 0.5 division composite sync
signal.
7-34 2247A Operators