@INTENSITY
Control-Determines overall brightness
of
the A
Sweep
and B
Sweep
crt
displays. Interacts
with B
INTENSITY
control on B
Sweep
crt
displays.
@Focus
Control-Adjusts
for
optimum
display
definition.
@cALIBRATOR
Loop-A
combination 30-milliamp
current loop
and
0.3-volt
square
wave
voltage
output
(approximately 1 kilohertz) that permits the operator
to
compensate voltage probes and
to
check oscillo·
scope
vertical operation.
It
is
not
intended
to
verify
precise time-base calibration.
@
SC~LE
ILLUM
Control-Adjusts
graticule
illumi·
nat1on.
@ASTIG
Control-Screwdriver control
used
in
conjunc·
tion
with
the FOCUS control
to
obtain a well-defined
display.
It
does
not
require readjustment during
normal
use
of
the instrument.
@TRACE
ROTATION Control-Screwdriver control
used
to
align trace
with
the horizontal graticule lines.
DM44 OPTION
@
Input
Connectors-
Two
banana
jacks provide COM
(black) and
+ (red) inputs
for
de
voltage and resist-
ance
measurements.
@ Probe Connector-Used
to
connect a temperature
probe.
@Readout-A
3%-digit LED display using five 7-segment
arrays. Negative polarity indication
is
automatic
for
negative
de
voltage and temperature. No polarity
indication
is
displayed
for
positive values. A blinking
display indicates
an
overrange condition. The decimal
point
location
is
controlled by the multimeter's
FUNCTION
and
RANGE controls and by the oscillo-
scope's A
TIME/DIV
switch (in the
TIME
or
1/TIME
modes).
The maximum safe input in the 1.2 kilovolts de mode
is
1200 volts.
8
465B/DM44 Operators
@
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