Tektronix 2247A

Performance Check Procedure
Set:
Horizontal MODE B
A/B SELECT B Trigger
CHECK—that using the Trigger LEVEL control the display can be
stably triggered In DC, LF REJ, and AC Trigger CPLG.
Set:
Horizontal MODE A
Vertical MODE CH 2 (CH 1 off)
CH 2, CH 3, and CH 4
VOLTS/DIV O.1V
A/B SELECT A Trigger
A Trigger CPLG oc
Move test signal from CH 1 to the CH 2 input.
Set leveled sine-wave generator output to produce a 1.0 division dis-
play amplitude at 150 MHz.
CHECK—that a stable display can be obtained. (The Trigger LEVEL
control may be adjusted to Improve the display stability.)
Repeat the procedure for CH 3 and CH 4 (turn on the appropriate Ver-
tical MODE and move the test signal as required).
Move test signal to the CH 1 Input.
Set Vertical MODE to CH 1 (others off).
Remove the 2X BNC attenuator from the test signal path.
Set leveled sine-wave generator output for a 2.2-
division display amplitude at 100 MHz.
CHECK—that the display Is stably triggered with NOISE REJ Trigger
CPLG but Is not triggered with HF REJ Trigger CPLG.
Set leveled sine-wave generator output for a 0.5-division display ampll-
tude at 100 MHz.
CHECK-—that the display Is not triggered In NOISE REJ Trigger CPLG.
7-32 2247A Operators
:
C3
C4