SPECIFICATION
Instrument Description
tion 02 instruments provide quasi-peak or true rms
detection. This feature
'permits comparison with readings
The AA 501 is a fully automatic distortion analyzer,
obtained
on
other
instruments.
packaged as a two-wide
TM
500 plug-in. Total harmonic
distortion is measured with the standard instrument. Option
01 instruments also measure
SMPTEIDIN intermodulation
Ac input and output connections are available on both
distortion and
CClF two-tone difference frequency distor-
the
front
and
the
rear
interface.
Dc
signals,
tor-
tion. Option 02 instruments permit noise measurements in
respondingtothedisplayed
reading,
areavailablethrough
with
CC'R
468-2
Or
therearinterface.
Thisallowsflexibilityininterconnection
45405.
with other instruments such as filters, chart recorders,
spectrum analyzers, oscilloscopes, etc.
Distortion set level, frequency tuning and nulling are
fully automatic, requiring no operator adjustment. Input
level range and distortion measurement range selections
are fully automatic or may be manually selected. Distor-
tion readout is provided in percent or dB.
The
AA
501 is also a high sensitivity, autoranging,
audio frequency voltmeter. Readings may be in volts,
dBm, or dB relative to any arbitrary reference.
Filters are included which allow measurement of noise to
IHF and FCC specifications. Option 02 instruments provide
a quasi-peak detector for noise measurements in accor-
dance with
CClR or DIN standards. A hum rejection filter is
provided as are provisions for external filters.
All readings are displayed on a
3
112 digit readout. An
uncalibrated analog readout is also provided to aid in nulling
and peaking applications.
Ac to dc conversion is either average or true rms re-
sponding, allowing conformance with most standards.
Op-
Performance Conditions
The electrical characteristics in this specification are
valid only if the
AA
501 has been adjusted at an ambient
temperature between
+20°
C
and +30° C. The instrument
must be in a noncondensing environment
whoselimits are
described under the
environmental part. Allow twenty
minutes warm-up time for operation to specified ac-
curacy; sixty minutes after exposure to or storagein a high
humidity (condensing) environment. Any conditions that
are unique to
a
particular characteristic are expressly
stated as part of that characteristic.
The electrical and environmental performance limits,
together with their related validation procedures, com-
prise a complete statement of the electrical and en-
vironmental performance of a calibrated instrument.
Items listed in the Performance Requirements column
of the Electrical Characteristics are verified by completing
the Performance Check in the Calibration section of this
manual. ltems listed in the Supplemental Information
column are not verified in this manual.
REV
NOV
1981
SCMS
by
ARTEK
MEDLQ
=>
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