Tektronix 2247A

Performance
Check
Procedure
2. §00 kHz Trigger Sensitivity
a. Set:
SCOPE
BW
Off
pa
Horizontal
MODE
A
|
A/B
SELECT
A
Trigger
ht
A SEC/DIV 2 ps
b.
Connect
leveled
sine-wave
generator
(SG
503)
output
to
the
CH
1
Input
via
a
50
©
BNC
coaxial
cable
and
a
50
2
BNC
termination.
c.
Set
leveled
sine-wave
generator
output
to
produce
a
7.0
division
sine-
wave display
amplitude at
500
kHz.
d.
Add
a
10X
and
a
2X
BNC
attenuator
before
the
50
2
BNC
termination
(for a 0.35 division display
amplitude).
e.
CHECK—that
the
display
cannot
be
triggered
in
elther
HF
REJ
of
NOISE
REJ CPLG.
f. Set:
Horizontal MODE B
A/B
SELECT
B
Trigger
B SEC/DIV 1ps
g.
CHECK
—that
the
display
cannot
be
triggered
In
HF
REJ
or
NOISE
REJ
CPLG
by
adjusting
the
Trigger
LEVEL
control.
3. 25 MHz Trigger Sensitivity
a. Set:
Horizontal MODE A
A/B
SELECT
A
Trigger
A
Trigger
CPLG
oc
A
SEC/DIV
50
ns
b.
Remove
the
10X
and
2X
BNC
attenuators
from
the
signal
path.
c.
Set
leveled
sine-wave
generator
output
to
produce
a
7.0
division
display
amplitude
at
25
MHz.
7-30
2247A
Operators