Tektronix 492 Operator's Handbook

c
. Apply the CAL
OUT to the RF
INPUT by
connecting
a
50
coaxial cable
between the CAL
OUT
connector and
the
RF
INPUT .
d
. In the
MAX frequency
span mode , a
dot
marker in
the
upper
portion of
the
screen
indicates
the
location
on
the
display to
which the
492
center
frequency
is
tuned .
With
a
frequency readout
of MHz , it will
be in the
upper
left
portion of
the
screen .
Adjust
the center
FREQUENCY
control and note the dot marker move across the display .
e
. Note the comb
of 100 MHz
markers
at the
left side of
the
display ( see
Fig . 2-4 ) . Tune
the dot marker
to a
position
above
the first
100 MHz marker
.
f
. Change
the
FREQ
SPAN
/ DIV
to 100
MHz . Note
that
the
dot
marker is
now
centered
horizontally
and the
100 MHz signal is at or near center screen .
g
. Position the
dot marker to the
graticule centerline
with the horizontal ( ◄► ) position control . Adjust the
center
frequency control
to tune the
signal over the
dot
marker .
h . Press the 2 dB / DIV Vertical Display button , then
position the
baseline
of the
display to the
bottom
graticule
line
with the
vertical ( ) POSITION control .
-20DBM
18DB /
492
Operator's
Handbook
10DB
ONHZ MAX
0-1.8
NHZ
REF
-20
-30
< -40
-70
MOU
!
2726-7
Fig
. 2-4
.
Typical
display
of
calibrator
markers
in
MAX
SPAN
position
.
2-15

Tektronix 492 Specifications

General

Brand	Tektronix
Model	492
Category	Measuring Instruments
Language	English