Set the
HORIZ
DISPLAY
switch
to
8 DLY'D.
Slightly
readjust
the
fl.
TIME
control
to
superimpose
the displayed
waveform
portions
(see Fig.
328).
The
DELAY TIME
POSITION
control
may need
to
be
slightly
readjusted
to
keep the
display
on screen.
The
Readout and Scale Factor
Lamps
indicate
the
time
duration.
FREQUENCY MEASUREMENTS (DM44}
To
measure frequency, use the same procedure
as
for
Time
Duration
Measurements
except
set the FUNCTION
switch
to
1/TIME. With the
display
superimposed the
Readout and Scale Factor Lamps
indicate
the frequency.
The Scale Factor Lamps
indicate
the scale
factor
as
follows:
1/ms Lamp
1/µs Lamp
Multiplier
OFF
OFF
Hz
ON
OFF
kHz
OFF ON
MHz
A
blinking
display
indicates an over-range condition.
This
occurs
on measurements as follows:
A Time/Div Set
To
Decade Spacing Between Intensified
Multiples of Zones
Less
Than
0.25 DIV
2
0.5 DIV
5
1.0 DIV
TIME DIFFERENCE BETWEEN
TWO PULSES FROM
DIFFERENT SOURCES (DM44}
Set
controls
as
follows:
A SOURCE
VERT
MODE
HORIZ
DISPLAY
8
SOURCE
8
TIME/DIV
CH 1
ALT
AINT
STARTS AFTER DELAY
3
or
4
positions
more
cw than A
TIME/DIV
VAR
TIME/DIV
Detent
position
Connect
the
reference signal
to
the CH 1
input
and the
comparison
signal
to
the CH 2 input.
Connect
the signals
to
the
inputs
with
cables
or
probes having equal time
delays.
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466/464 DM44 Operators
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