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@RANGE-Pushbutton
switches select
from
0.2 volts
to
1.2 kilovolts
de
in five
ranges
or
from
200
ohms
to
20 megohms in six
ranges.
@FUNCTION-Five
pushbutton switches
[VOLTS,
OHMS, TEMP (°C),
1/TIME,
and
TIME)
are
used
to
select respective functions
for
measurement.
@ms
(or 1/ms) and
Jl.S
(or
1/JJ.s)
Indicators-Two
LEDs
automatically indicate correct units
of
measurements.
With the
TIME
function
selected, the units
of
time
difference (milliseconds
or
microseconds) between
the
two
intensified zones on the
crt
display
is
in·
dicated by
illumination
of
either the
ms
or
Jl.S
LED.
Seconds
are
indicated when
both
LEDs
are
in a
non-illuminated state.
With the 1
/TIME
function
selected, the number
of
measured intervals per
unit
of
time (milliseconds
or
microseconds)
is
indicated by
illumination
of
the respective 1 /ms
or
1
/JJ.s
LED.
If
the duration
of
one event
is
being measured, the LEOs indicate
frequency. An illuminated 1 /ms LED indicates fre-
quency in kilohertz and
an
illuminated 1
/JJ.S
LED
indicates megahertz. Frequency in hertz
is
indi-
cated when both LEDs
are
in a non-illuminated
state.
@
6.
TIME
Control-Used
in conjunction
with
the
DELAY
TIME
POSITION control in the
TIME
and
1
/TIME
functions. The
6.
TIME
control
moves
only
the time-measurement
point
while the
DELAY
TIME
POSITION control moves both the reference
point
and the time-measurement
point.
With the time-
measurement
point
to
the
left
of
the reference point,
the Readout indicates a negative
time
difference.
NOTE
The
DM44 may be
modified
to
make the
DELAY
TIME POSITION
control
move
only
the reference
point.
The
procedure
for
making this modification
is
located in the Maintenance Section
of
the DM44
Instruction Manual. Modification is
to
be done
by
qualified service personnel only.
@
465BIDM44 Operators 9
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