Leader Electronics Corp. LMV-181A - General Information and Features; General Instrument Description; Key Features; Technical Specifications

1.
General
These
instruments
are
millivoltmeters
and
voltmeters
with
mean
value
indicating
devices
that
offer
effective
value
calibration,
and
are
used
for
measuring
sine
wave
alternating
current
voltages
of
100/xV
to
300V
[150V
to
500V]
in the
5Hz to
IMHz
frequency
range.
These
instruments
are
highly
sensitive
and
precise.
New
circuitry
insures
wide
range
readings
with
excellent
linearity
characteristics.
The use
of output
terminals
enables
applic-
ation
of
these units
as
wide-band
high
gain amplifiers or pre-a-
mplifiers on
other
electronic
apparatus.
2.
Features
1.
Wide
band-width of
5Hz to
IMHz.
2.
High
accuracy;
±2%.
3.
Highly
precise,
reliable
and
stable
voltmeters
of new
circuit
design.
4.
Wide-use
voltmeters
with
two
decibel
scales
(OdB
=
IV, OdB
=
0.775V)
in
addition
to
the
effective
voltage
scales.
5.
The
output
is
calibrated
at
IVrms
full
scale,
so
that
these
instruments
can
be
used
as
low-noise
high-gain
pre-amplifiers
on
wave
form
monitors.
3.
Specifications
Voltmeter
Measuring
voltage
range
100/iV
to
300V
[150mV
to
500V]
Measuring range
Measuring
range
12
ranges
1,
3,
10,
30,
100,
300
mV
1,
3,
10, 30,
100,
300V
1
"l.5,
5,
15,
50,
150,
500mV
1.5,5,15,50,150,500V
Decibel
range
12
ranges
-60, -50,
-40,
-30,
-20,
-lOdB
0,
+10,
+20,
+30,
+40,
+50dB
(0
dB=
IV,
0
dB
=
0.775
V)
Measuring
accuracy
±2%
of
full
scale
(at
1
kHz or 400
Hz)
Frequency
characterisitcs
5
Hz
to
1
MHz
±10%
10
Hz
to 500
kHz
±5%
20
Hz
to
100
kHz
±2%
(1
kHz
as
base)
Input
resistance
10
M^2
Input
capacitance Under
50
pF
(ImV
to
300mV
[1.5mV
to
500mV])
Under
35
pF
(IV
to
300V
[1.5V
to
500mV])
Maximum
input
voltage AC
peak
+
DC
=
600V
Noise
Within
2%
of full scale by
shorting
input
Amplifier
Output
voltage
Frequency characteristics
Output
impedance
Distortion factor
Operating
temperature
range
IV
no load
when l.OV
[5.0V]
is indicated
at
full scale of each
range
lOHz
to
500kHz
-3 dB
(1
kHz
as
base)
60012±20%
Within
1%
at
full scale
(1
kHz)
0
to 40°C
2