Leader LAG-55 - General Information and Features; General Description; Key Features; Technical Specifications

AUDIO
GENERATOR
SINE
SQUARE
MODEL LAG
-55
GENERAL
The
LEADER
Model
LAG-55
Audio
Generator
is
a
dependable
high
quality
instrument
designed as
a source
for measurements
in
the frequency
range
from 20 to
200,000
cps.
A very stable
Wien bridge
oscillator circuit
is
utilized.
The frequency
range is
covered
in
four
decade
bands
and indicated
on
a
clear
easy-to-read
dial.
Three
different
waveforms are
available,
(1)
sine
waves of
low distortion,
(
2
)
clean cut square
waves
and
(3)
complex
or mixed, which
are useful
in audio
testing,
servicing
and
maintenance.
The
complex wave is
a
mixture
of
the power line
and
an internal high frequency in
a 4:1
ratio,
used
for
the intermodulation, or IM, distortion
measurements
with
the built-in
high
pass
filter and an external
scope.
A very constant
output level
is maintained
due to
the use
of
a
thermistor
in
the
negative
feedback circuit.
FEATURES
A.
Sine,
square and complex
waveforms
available
for all types of audio testing
in labora-
tories,
plants and
service
shops.
B.
Stable
operation due to the use of printed
circuitry.
C.
IM distortion
tests
with the
internal
high pass filter and
an external
scope.
D.
Rugged
construction suited for plant and field use.
E.
Minimum pull-in
at
the
line
frequency and
its
harmonics.
F.
Mounted in
a
steel
cabinet, with
an attractive
two-tone
panel.
G.
Designed for
the
maximum
ease
and troublefree
operation.
SPECIFICATIONS
Frequency
Range
(Direct
reading)
Frequency
Accuracy
Frequency
Stability
Output
Impedance
Waveform
Output
:
Sine
Wave
Response
Output
Voltage
20
to
200,000
cps on four
ranges
A
20 to
200
cps
B
200
to
2000
cps
C
2 to 20
Kc
D
20
to
200 Kc
within
(2%
4*2
cps)
1%
for
5%
line
voltage
change
over
1.5
KQ
at
maximum output
20
to
200,000 cps
within
0.5 dB
referred to
1 Kc
over
5
volts rms (High Z
load)
1