Tektronix VITS 200 Instruction Manual page 151

Performance Verification
5–36
Control
Vertical Desc
Horizontal Desc
Acquire Desc
Vert Size: C1
Vert Offset: C1
Impedance . . . . . . . . . . . . . . . .
Coupling . . . . . . . . . . . . . . . . . .
BW Limit . . . . . . . . . . . . . . . . .
f. Touch the lower waveform to enable control of it.
g. Select the vertical arrows that appear at center screen on the 11k scope.
h. Select cursors from the top of the lower window part of the 11403A
screen, and then set cursor type to Horizontal Bars.
i. Use the upper knob to set one cursor to the amplitude of the flag on the
left of the screen.
j. CHECK – that the sweep out to 5 MHz (4
sweep) is within "1% ("3.6 mV) of the flag cursor.
May have to wait for signal to settle.
k. Use the lower knob to set the second cursor 3.6 mV above or below the
first cursor depending on sweep signal.
CHECK – that the sweep past 5 MHz is within "5% ("17.8 mV) of
l.
the flag cursor. Use the lower knob to set the second cursor 17.8 mV
above or below the first cursor depending on sweep signal.
m. If the instrument has the 1J option then perform the following step,
otherwise skip to step n.
i. Turn off the
VITS 200.
ii. Press and hold the TEST SIGNAL key and turn the instrument back
on.
iii. When the message displayed is "Select Signal Set Used", increment
to JAPAN 1V.
iv. Press SAVE, then move J54 to pins 2 and 3 on the Inserter board.
n. Install the lid on the instrument with the twelve screws removed earlier.
This completes the Performance Check procedure.
Setting
. . . . . . . . . . . . . . Avg C1 Fast
. . . . . . . . . . . . Window @ 10240 pts
Main @ 5120 pts
. . . . . . . . . . . . . . Continuous
. . . . . . . . . . . . . . 3.6 mV/div
. . . . . . . . . . . . . 507.6 mV
1 MW
DC
300 MHz
th
major division after start of
VITS 200