Tektronix AA 501 User manual

Tektronix, Inc.
P.O. Box
500
Beaverton, Oregon 97077
070-2958-00
Product Group 75
COMMITTED TO EXCELLENCE
PLEASE CHECK FOR CHANGE INFORMATION
AT THE REAR OF THIS MANUAL.
INSTRUCTICIN MANUAL
Serial Number
First Printing AUG 1980
Revised
NOV 1981
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Copyright @ 1980 Tektronix. Inc. All rights reserved.
Contents of this publication may not bereproduced inany
form without the written permission of Tektronix, Inc.
Productsof Tektronix. Inc.and
itssubsidiariesarecovered
by U.S.and foreign patents and/or pending patents.
TEKTRONIX. TEK. SCOPE-MOBILE, and
@ are reg-
istered trademarks of Tektronix. Inc.
PrintedinU.S.A.Specificationand pricechangeprivileges
are reserved.
Copyright
O 1980 durch Tektronix, Inc. Alle Rechtevorbe-
halten. Der lnnalt dieser Publikation darf ohne Genehmlgung
von Tektronix, Inc. nicht weitergegeben werden.
Produkte von Tektronix, Inc.undseinen Tochtergesellschaften
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@ sind geschlltzte
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Gedruckt in U.S.A. Spezifikations- und PreisBnderungen
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dews&.
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Scans by ARTEK MEDLA =>

TABLE OF CONTENTS
LlST OF ILLUSTRATIONS
Page
i v
LIST OF TABLES v
OPERATOR'S SAFETY SUMMARY vi
SERVICE SAFETY SUMMARY vii
Section
I SPECIFICATION
Instrument Description
.......... 1-1
......... Performance Conditions 1-1
Electrical Characteristics
......... 1-2
.......... EnvironmentalCharacteristics 1-7
.............. Physical Characteristics 1-8
English Version
Section
2 OPERATING INSTRUCTIONS
............ Preparation for Use 2-1
........ Repackaging Information 2-1
Controls. Connectors. and Indicators 2-2
......... Instrument Connections 2-4
............ Level Measurements 2-5
........
Distortion Measurements 2-6
Distortion Measurement Procedure . 2-7
IM Distortion Measurements
..................
(Option01) 2-9
IM DistortionMeasurement Procedure
.................. (Option01) 2-11
Filters
...................... 2-11
Displays
.................... 2-12
Monitoring
................... 2-13
Page
French Version
CHAPITRE 2 INSTRUCTIONSD'UTILISATION
Instructionsde reemballage pour
expedition
................ 2-1
Cornmandes. connecteurs et temoins
lumineux
................ 2-2
Connexions de I'appareil
........ 2-4
Mesures de distorsion .......... 2-6
MBthode de rnesure de distorsion . . 2-8
Mesures de distorsion d'intermodula-
tion (option 01) ............ 2-9
MBthode de rnesure de la distorsion
par interrnodulation (option
01) . . 2-1 1
Filtres .................... 2-11
Affichages .................. 2-13
ContrBle .................. 2-13
German Version
........... Kapitel2 BEDIENUNGSANLEITUNG 2.1
...................... lnbetriebnahme 2-1
............. Verpackung des Gerates 2-1
Bedienungselernente. Anschliisse
undAnzeigen ........................ 2-2
Anschlusse an das Instrument ....... 2-4
..................... Pegelmessungen 2-5
.............. Verzerrungsmessungen 2-6
Durchfuhrung der
................ Verzerrungsmessung 2-7
lnterrnodulationsverzerrungs-
................ Messung (Option 01) 2-9
Messung von Interrnodulations-
........
verzerrungen (Durchfijhrung) 2-11
................................. Filter 2-11
........................ Darstellungen 2-12
........................
~berwachung 2-13
REV NOV 1981
Scans by ARTEK MEDLQ =>

TABLE OF CONTENTS (cont)
Japanese Version Page
THE FOLLOWING SERVICING INSTRUCTIONS ARE
FOR USE BY QUALIFIED PERSONNEL ONLY
. TOAVOID
PERSONAL INJURY. DO NOT PERFORM ANY SER-
VICING OTHER THAN THAT CONTAINED IN
OPERATING INSTRUCTIONS UNLESS YOU ARE
QUALIFIED TO DO SO
.
Section 3 THEORY OF OPERATION
Introduction .................. 3-1
Input Amplifier ...... 3-1
Automatic Gain Control
0 .... 3-2
Notch Filter
a ............. 3-2
v
Frequency Band Discriminator
Notch Filter Control
$$ : : : ... :
Distortion Amplifier
Filters and AC-DC Converters
@
dB Converter ........
......
dB Offset Generator 6
dB Ratio Circuitry @ ........
6 V Reference @ ...........
Dvm @ ... ............
Display Board
Logic Circuitry
Power Supplies
.........
...............
.. 15 V Supply
IM option @ .............
Page
Section
4 CALIBRATION
Performance Check Procedure .... 4-1
Introduction
................ 4-1
Test Equipment Required
...... 4-1
List of Check and Adjustment Steps 4-3
Performance Check Summary
....................
Sheet 4-4
Internal Adjustment Procedure
.... 4-18
Introduction
................ 4-18
Services Available
........... 4-18
Test Equipment Required
...... 4-18
Adjustment Access
........... 4-18
Section 5 MAINTENANCE
General Maintenance Information . .
Static-Sensitive Components ....
Cleaning ..................
Obtaining Replacement Parts ...
Soldering Techniques .........
Semiconductors .............
Interconnecting Pins ..........
Coaxial Cables ..............
Square Pin Assemblies ........
Multipin Connectors ..........
Circuit Board Removal ........
Front Panel Latch Removal .....
Magnetic Shield .............
Jumper Selection for CCIF. AUTO.
or SMPTWDIN Measurements
...
30 kHz Filter Modification ......
Rear Interface Information .......
Functions Available at Rear
Connector
.................
Section 6 OPTIONS
Section
7 REPLACEABLE ELECTRICAL PARTS
REV JUL 1981
Scam by ARTEK MEm +

TABLE OF CONTENTS (cont)
Section 8 DIAGRAMS AND CIRCUIT BOARD
ILLUSTRATIONS
Adjustment Locations
Component Reference Charts
Schematic Diagrams
Section 9 REPLACEABLE MECHANICAL
PARTS
Fig. 1 Exploded View
Accessories
CHANGE INFORMATION
iii

Fig.
No.
LIST OF ILLUSTRATIONS
........... AA 501 Distortion Analyzer
2-1 Installation and removal
.............
....
2-2 Front panel controls and connectors
2-3 Typical connections for distortion
measurements. See text
.............
2-4 Blockdiagramof abasic harmonicdistortion
analyzer
.........................
2-5 Transfer characteristics of an audio device
.....
2-6 THD test of transfer characteristics
.... 2-7 Block diagram of a basic IM analyzer
2-8 IMtest of transfer characteristics intimeand
frequency domain.
.................
...... 2-9 Responsecurves for AA 501 filters
2- 10 Oscilloscope display of deviation from
linearity
......................
3-1 Simplified notch filter and control loop
.
3-2 Typical frequency discriminator waveforms
at about 800 Hz
...................
3-3 lntermodulation distortion option block
diagram
.........................
4-1 Check step 1. Input impedance ........
4-2 Check step 2. Common mode rejection . .
4-3 Check step 3. Level function accuracy ...
4-4 Check step 4. Bandwidth .............
4-5 Check step 5. Residual noise ..........
4-6 Check steps6,9,10,11 andadjustment steps
9, 10, and 11. Total harmonic, SMPTE and
CClF distortion and CClF residual IM
distortion ........................
4-7 Check step
7. Residual THD tN ........
Page Fig.
N 0.
i x 4-8 Check step
8 and adjustment step 8. SMPTE
......
2- 1 residual intermodulation distortion
2-3 4-9 Check step 11A and adjustment step 11A.
Alternate CClF IMdistortion accuracy ...
.........
2-5 4-10 Check step 12. Filter accuracy
......... 4-11 Check step 13. lnput monitor.
........
2-7 4-12 Check step 14. Function output
.........
2-7 4-13 Check step 15. Auxiliary input
2-8 4-14 Adjustment test setup for steps 1 and 2
. .
2-9 4-15 Adjustment test setupfor steps3, 4.5,6. and
7
..............................
..........
2-10 5-1 Typical square pin assembly
Orientation and disassembly of multipin
....................... connectors
..... Side cover removal or replacement
Top and rear panel removal
...........
Screwsattachingtheboardassembliestothe
..................... plug-in frame
Rear interface connector assignments
...
Adjustment location illustration for Main,
lnput and Notch dvm boards.
Adjustment location illustration for Control
and IMDOption boards.
lnput board (A14) parts location grid.
Main board (A15) parts location grid.
Logic board (A12) parts locationgrid.
Dvm board (A11) parts location grid.
Display board (A10) parts location grid.
IMD option board (A13) parts location grid.
Page
Scam by ARTEK MEN =r

LIST OF TABLES
Table
No.
Page Table
N 0.
Electrical Characteristics ............. 1-2
Environmental Characteristics
......... 1-6
Physical Characteristics
............. 1-7
Gains from INPUT terminals to FUNCTION
OUTPUT connector for various settings of
the INPUT LEVEL RANGE control
...... 2-13
........ Truth Table for U1400Outputs 3-4
InternalConnections in
U1000Dependingon
Logic States of pins 10 and 11
......... 3-4
..... GainandSwitchingthroughU1210 3-4
Suggested Test Equipment
.......... 4-1
Common Mode Rejection Check
....... 4-6
Level Function Accuracy
............. 4-6
Relative Susceptibility to Static Discharge
Damage..
....................... 5-1
NOTE
The following lables are located in the diagrams
foldout section at the rear of this manual.
8-1 lnput Board (A14) Component Reference
Chart.
8-2 lnput Board (A14) Component Reference
Chart.
8-3 Main Board (A15) Component Reference
Chart.
8-4 lnput Board (A14) Component Reference
Chart.
8-5 lnput Board (A14) Component Reference
Chart.
8-6 Main Board (A15) Component Reference
Chart.
8-7 Logic Board (A12) Component Reference
Chart.
8-8 Dvm Board (All)Component Reference
Chart.
8-9 Display Board (A10) Component Reference
Chart.
8-10 Logic Board (A12) Component Reference
Chart.
lnput Board (A14) Component Reference
Chart.
Main Board (A15) Component Reference
Chart.
8-11 Logic Board (A12) Component Reference
Chart.
8-12 Logic Board (A12) Component Reference
Chart.
8-13 Main Board (A15) Component Reference
Chart.
8-14 IMD Option Board (A13) Component
Reference Chart.
Page

OPERATORS SAFETY SUMMARY
The general safetyinformation inthis partofthesummary
Power Source
is for both operating and servicing personnel. Specific
warnings and cautions will be found throughout the
This product is intendedto operate fromapower module
manual where they apply, but may not appear
in this connectedtoa Power source that will not apply morethan
s~lmmarv.
250 volts rms betweenthe supply conductors or between
- - . . . . ..-.
, .
either supply conductor and ground. A protective ground
connection by way of the grounding conductor in the
power cord is essential for safe operation.
TERMS
InThis Manual
Groundingthe Product
This productisgrounded throughthegrounding conduc-
tor of the power module power cord. To avoid electrical
CAUTIONStatements identify
conditionsorpracticesthat Shock, plug the Power cord into a properly wired recep-
couldresultindamagetotheequipment or other property,
tacle before 'Onnecting the product input Or Output
terminals. A protective ground connection by way of the
WARNING identify conditions
or practices grounding conductor inthe power module power cord is
that could result in personal injury or loss of life. essential for safe operation.
As Marked on Equipment Danger Arising From Loss of Ground
CAUTION indicates a personal injury hazard not im-
mediately accessible as one reads the marking, or a Upon loss of the protective-ground ~~nnection,all
hazard to property including the equipment itself. accessible conductive parts (including knobs and con-
trols that may appear to be insulating) can render an
DANGER indicates a personal injury hazardimmediately
electric
accessible as one reads the marking.
Use the Proper Fuse
To avoid fire hazard, use only the fuse of correct type,
voltage rating and current ratingas specified inthe parts
list for your product.
SYMBOLS
InThis Manual
Refer fuse replacement to qualified service personnel.
This symbol indicates where applicable
DO NO^ Operate in Explosive Atmospheres
cautionary or other information is to be
found.
As Marked on Equipment
9 DANGER - High voltage.
To avoid explosion, do not operate this product in an
explosive atmosphere unless it has been specifically
certified for such operation.
Do Not Operate Without Covers
@ Protective ground (earth) terminal. To avoid personal injury, do not operate this product
without covers or panels installed. Do not apply powerto
ATTENTION
- refer to manual. the plug-in via a plug-in.extender.
Scans by ARTEK MEDLQ =>

SERVICE SAFETY SUMMARY
FOR QUALIFIED SERVICE PERSONNEL ONLY
Refer also to the preceding Operators Safety Summary.
Do Not Service Alone Disconnect power before removing protective panels,
soldering, or replacing components.
Do not perform internal service or adjustment of this
product unless another person capable of rendering first
aid and resuscitation is present.
Power Source
This product is intended to operate in a power module
Use Care When Servicing With Power On
connectedtoa power sourcethat will not applymorethan
250 volts rms betweenthe supply conductors or between
Dangerous voltages may exist at several points in this either supply conductor and ground.
A protectiveground
product. To avoid personal injury, do not touch exposed connection by way of the grounding conductor in the
connections and components while power is on. power cord is essential for safe operation.
vii
Scans by AR TEK MEDL4 =>

viii
~lrkvpr +
MAX
r -RMs L AVC 1 rn "1 f:~~R r
AA501 Distortion Analyzer
Scans by ARTEK MEDIA =>

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
distortionis measured with the standard instrument. Option
01 instruments also measure SMPTEIDIN intermodulation Ac input and output connections are availableonboth
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 nooperator adjustment. Input
level range and distortion measurement rangeselections
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.
Filtersare includedwhich 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
providedas are provisions for external filters.
All readings are displayed on a
3 112 digit readout. An
uncalibratedanalogreadout is also providedto aid innulling
and peaking applications.
Ac to dc conversion is either average or true rms re-
sponding, allowing conformance with most standards. Op-
PerformanceConditions
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. Theinstrument
must be inanoncondensingenvironmentwhoselimitsare
described under the environmental part. Allow twenty
minutes warm-up time for operation to specified ac-
curacy; sixtyminutesafter exposuretoorstorageinahigh
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 inthe Performance Requirements column
of the Electrical Characteristics areverified bycompleting
the Performance Check inthe Calibration section of this
manual. ltems listed in the Supplemental Information
column are not verified inthis manual.
REV NOV 1981
SCMS by ARTEK MEDLQ =>

Table 1-1
- -- - - -- - -- -
ELECTRICAL CHARACTERISTICS
7- --
- -
r
- -
Characteristics
.-
- -
--
- - -- - - -. - -
INPUT (allfunctions)
Impedance
---- - .
- - -
Maximum Input voltage
- -- -
Common mode rejection
(inputs shorted)
- - -- - -
LEVEL FUNCTION
Modes
- --
Accuracy (V,, a 100pV
with level ranging indicators
extinguished)
-
- ---
20 Hz to 20 kHz
Performance Requirements
--
Supplemental Information
. --
- -.
- -- -- -- -
,
100 kR, + 2%, each side to ground
200pV to 200 V in 10steps (2-6 se-
quence from 200 mV to 200 V)
--
~ --- ~- -- --
250dB at 50 or 60 Hz for common
mode signals up toone-half of selected
input range or 50 mV, whichever is
greater.
--
- -
Volts
I
I
Full differential. Each side ac coupled
through
1 pF and shunted to ground by =
100pF. Dual banana jack connectors at
0.750 inch spacing with ground connector
additionally provided.
- -. -
Range selection is manual or automatic.
Auto-ranging time is typically
(1 second.
Separate increase range and decrease
range indicators illuminatewhenever input
leveldoes not fall within optimum window
for selected range. For specified instru-
ment performance both indicators must
be extinguished.
- - -- . . -.
300 V peak, 200 V rms either input to
ground or differentially. Will recover with-
out damage from continuous overloads of
120
V rmsor 200 V rmsfor 30 minuteson
all ranges. For linear response peak input
voltage must not exceed 3 times INPUT
LEVEL RANGE setting.
~~ ~~ ~
Typically 240dB to 300 kHz.
( Volts, dBm (600 0). or dB ratiowith push
Within
+ 2% 1
-
REV NOV 1981
to set 0 dB reference. lnput range deter-
mines display range. Single effective
range indB modes with 0.1 dB resolution.
Stored 0 dB reference is unaffected by
subsequent changes in mode or function.
-.
On the 200 pV range accurcy above
50
kHz is +4%, -6% (+0.5 dB,
-0.7 dB). Accuracy with quasi-peak re-
sponse (Option 02 only) is valid from
20
Hz to 50 kHz only).

Residual noise
(Source resistance
G 1 kS1)
-
TOTAL HARMONIC DISTORTION
PLUS NOISE FUNCTION
Fundamentalfrequency
range
Minimum input level
Distortion ranges
--
Accuracy (THD ~30%
and readings 34%of
selected distortion range)
20 Hz to 20 kHz
10Hz to 100kHz
- --- --
Residual THD+N (V,,, a250mV,
source resistance G 1 kS1)
20 Hz to 20 kHz with
80 kHz noise limiting filter
and T <+40°C
10Hz to50kHz
50 kHz to 100kHz
Typical fundamental
rejection
Table
1-1 (cont)
- -
Performance Requirements
- - - -- - - - -
- --
At least 300 kHz with no filters
selected.
~3.0rV (- 108 dBm) with 80 kHz,
400 Hz filters and rms response
~1.5pV(-114dBm) with A
weighting filter and rms response
(standard and Option 01 instruments
only)
~5.0wV (- 104dBm) with CClR
weighting filter and quasi-peak re-
sponse (Option 02 only)
- -- - - - -.
10Hz to 100kHz
Within
+ 10% (k 1dB) for harmonics
< 100 kHz.
Within +lO%, -30%
(+ 1 dB, -3 dB)
for harmonics ~300kHz.
- - - - - - - - - -- - - -. - - - -
~0.0025~/0(-92 dB) average
response
~0.0032%(-90 dB) rms response
=z0.0071 O/O (-83 dB), rms response
=zO.OIOO/~ (- 80 dB), rms response
- - --
Supplemental Information
Fully automatic tuning and nulling. For
proper tuningTHD+ N <1O0/0. After initial
tunlng THD+ N candegrade to 30% with-
out loss of lock for SINAD testing. Typical
nulling time is less than 5 s above 20 Hz.
- -- - -
Autorange, 20°/0, 2%, 0.2%, anddB. dBis
internally autorangingwith single effective
displayrange. Autorange allows measure-
ments above 20%.
Accuracy is limited by residual THD
+ N
and filter selection. Not applicablewith
quasi-peak response(Option 02 only).
Measured with
SG 505 oscillator. All dis-
:ortion,noise, and nullingerror sources
:ombined.
it least 10dB below specified residual
rHD + N or the actual signalTHD, which-
!ver is greater.
REV NOV 1981
~cMs by ARTEK MEDL4 =,

Table 1-1 (cont)
-- .-
-
Characteristics
- - - - -. -
- -
INTERMODULATIONDISTORTION
FUNCTION
Operation
SMPTE and DIN tests
Lower frequency range
Upper frequency range
Levelratio range
ResidualIMD (V, 2250mV,
source resistance 61kil,
~40°C)
.- ~ -
CClF difference tone test
(IM components
G 1kHz)
Frequency range
Differencefrequency range
ResidualIMD (Vna250mV,
source resistance 6 1kR,
<+40°C)
Minimuminput level
- -~ ~~ - - ~
Accuracy (IMD ~30%and
readings >4% of selected
distortion range)
---. ~.~ -~ ~
FILTERS
400 Hz high pass
~~~ .
80 kHz low pass
~
30kHz low pass
(standard and Option 01
only)
~ -
-~ -
22.4 Hz-22.4kHz
{Option02 only)
-~ - ~~~-.~ ~ -~.~ - .~
A weighting (standard and
Option 01 only)
~ ~ ~ ~
CClR WTG (Option 02 only)
Performance Requirements
--
- --- - -- -
- --
-
~0.0025%(-92 dB) for 60 Hz-7kHz
or 250 Hz-8 kHz, 4: 1 signals, rms
response
~0.0018%(-95 dB) with 14 kHz and
15kHz,
rms response
Within
k 10% (i 1dB)
-3 dB at 400 Hz,
+ 5%; at least
-40 dB rejection at 60 Hz
-3 dB at 80 kHz,
_+ 5%
-3 dB at 30 kHz, k 5%
-3 dB at 22.4 Hz, + 5% and
22.4 kHz,
+- 5%
Supplemental lnformatlon
- - --
- -- --
Fully automatic SMPTE, DIN, or CClFdif-
ference tone tests dependingupon actual
input signal whenever respective IMD
620%. Distortion ranges are same as
THD
t N function.
-. - - -
50Hz to 250 Hz
3 kHz to 100kHz
1
: 1 to 5:1 (lower : upper)
4 kHz to 100kHz
80 Hz to 1kHz
- - . -
Accuracy is limited by residual IMD and
filter selection. Not applicablewith quasi-
peak response (Option 02 only)
3 pole Butterworth response
-. - - -- --
3 pole Butterworth response
3 pole Butterworth response
.-
Nithinspecificationsof CClR Recommen-
jation 468-2 and DIN 45405 for
~nweightedmeasurement response.
Nithin specifications for type 1 sound lev-
?I meters listed in ANSI S 1.4 1971(re-
lised 1976) and IEC Recommendation
179.
- -
Nithinspecificationsof CClR Recommen-
iation468-2 and DIN 45405 for noise
neasurements.Functionalonly with qua-
ii-peak detector (response).
- - - - . - - - - --
REV NOV 1981
Scans by ARTEK MEDL4 =>

Auxiliary
- -- - - - .- - -- - -
-
FRONT PANEL SIGNALS
MONITOR OUTPUT
lmpedance
FUNCTIONOUTPUT
Signal
Sensitivity
Maximum Input Voltage
lmpedance
DETECTORS AND DISPLAYS
Detectors (Response)
RMS
AVG (standardand
Option 01)
- - - - - - - - - - - -.
Q-PK (Opt~on02 only)
Table 1-1 (cont)
-
Performance -- - -- Requirements -- . - - - - - -
1 V rms, k 10%
1 V, +- 3%, for 1000count volts or O/O
display.
1 V,
+- 3%, for 1000 count volts or O/O
display.
Supplemental Information
--- -
- . -- -
- -- - ---
- - - -
Selects front panelAUXILIARY INPUT al-
owing connect~onof external filter be-
ween lt and FUNCTIONOUTPUT.
- - - - - - -
-
Constant amplitude (averageresponse)
version of differential input signal. THD is
typically ~O.OOIOO/~
(- 100dB) from
20
Hz to 20 kHz.
Approximately 20 times input signal.
Selectedand filtered ac signal actually be-
ing measured.
Loop-through accuracy from FUNCTION
OUTPUT
IS t 3%.
15 V peak, 6 V peak for linear response.
Ac coupled.
- - - - - - - - -
True rms detection.
- -
Average detection, rms calibrated for
sinewaves. Typically reads 1 to 2 dB low-
er than true rms detection for noise,
THO+ N, and IMD measurements.
-. -- ~ ~
Quasi-peak detection, rms calibrated for
sinewaves. Within specifications of CClR
Recommendation468-2 and DIN 45405.
Due to the peak hold nature of its re-
sponse readings considerably higher than
rms response will occur with large crest
factor signals such as noise. The input
range indicators should be ignored and
auto-ranging avoided with these types of
signals.
REV NOV 1981
Scans by ARTEK MEDU =,

~
Table 1-1 (cont)
-- -- - . --
--
Characteristics
I
Performance Requirements Supplemental Information
-- ~ -- ~ --
--
~ --
Displays
Digital
Analog bar graph
MISCELLANEOUS
Power consumption
I
-
Internal pokersupplies
+5
-. - - -- -
Fuse Data
Recommendedadjustment
interval
Warm-up time
3 112 digit,2000count LED. Overrangein-
dication is 1, blank, blank, blank.
10 segment LED intensity modulatedbar
graph display of digital readout. Seg-
ments are logarithmically activated with
approximately 2.5 dBIsegment.
-- -. - - . - - - -
224 watts
-- -- - - - . - - - -
Nominally + 15.1 V, k 3%
Nominally - 15.1 V, k 5%
Nominally +5.0 V, + 5%
-. - - - -. - - -- - - -. --
3 AG, 1 A, 250 V, fast blow
3 AG, 1 A, 250 V, fast blow
3 AG, 1 A, 250 V, fast blow
--
1000hoursor 6 monthswhichever occurs
first
20 minutes (60 minutes after storage in
high humidity environment)
- -
-
REV NOV 1981
cons by ARTEK MEDIA =.>

Table 1-2
ENVIRONMENTALCHARACTERISTICSa
Characteristics
..~ Description
-- . .
- -- - . . .
ppppp.-----
i
-
Temperature Meets MIL-T-28800B, class 5.
Operating
Humidity
--
- --
Altitude
Operating
Non-operating
- - - - . - - -
Vibration
Shock
Bench handlingC
-. ~- ~ ~~ .. - .
EMC
Exceeds MIL-T-28800B,class 5
95% RH, 0°C to +40°C
45% RH, to t-50°C
- ---- -
Exceeds MIL-T-28800B, class 5.
4.6 km(15,000 feet)
15 km (50,000 feet)
. p- - . -- ~~
Exceeds MIL-T-28800B,class 5, when
installed in qualified power modulesb.
0.38 mm (0.015") peak-to-peak,5 Hz
to 55 Hz, 75 minutes.
Meets MIL-T-028800B,class 5, when
installed in qualifiedpower modulesb.
30 g's (112 sine) 11 ms duration, 3
shocks in each direction along 3 major
axes. 18 total shocks.
Meets MIL-T-28800B, class 5.
12drops from 45@. 4" or equilibrium,
whichever occurs first.
Qualifiedunder National Safe Transit Association Preshipment Test Procedure 1A-
B-1 and 1A-B-2.
Within limitsof MIL-461A.
Electricaldischarge
-
---- -
20 kV maximumcharge appliedto instrument case.
I .. . . - . . . . - .. - - . .
.With power module.
b~eferto TM 500 power module specifications.
=Withoutpower module.
REV NOV 1981
Scans by ARTEK MEDL4 =>

Characteristics
. -~ -~-. ~ ~-
-.~~- . -- - -
Maximum Overall Dimensions
Height
Width
Length
- - - -- -.
Net Weight
- -- --
Finish
Front Panel
Table
1-3
PHYSICAL CHARACTERISTICS
Description
-.. -
.. - . - -. -
p--.---p-----.---.- ~- . --- --- -~ ~
126.0mm (4.96 inches)
131.2 mm (5.16 inches)
285.5 mm
(1 1.24 inches)
~1.7 kg (3.75 Ibs.)
Plastic-aluminum laminate
Anodized aluminum
@ NOV 1981
Scam by ARTEK MEDL4 -->

Section 2-AA 501
OPERATING INSTRUCTIONS
Preparation For Use
connector. Align the AA 501 chassis with the upper and
lower guides of the selected compartment. Press the
The AA is calibrated and use when
AA 501 in, to firmly seat the circuit board in the inter-
received. It operates in any two compartments of a
connecting jack.
TM 500-Series power module. See the power module
instruction manual for line voltage requirements and
power module operation. Figure
2-1 shows the AA 501 To removethe AA 501 pullthe release latch(located in
installation and removal procedure. the lower left corner) until the interconnecting jack
disengages and the AA 501 slides out.
Check that the AA 501 is fully inserted in the power
Turn the power module off before inserting the module. Pullthe power switch onthe power module. One
AA 501. Otherwise, arcing may occur at the rear or more characters in the
LED display should now be
interface connectors, reducing their useful lifeand visible.
damage may result to the plug-in circuitry.
Check to see that the plastic barriers on the inter-
Repackaging Information
connecting jack of the selected power module compart- If the Tektronix instrument is to be shipped to a
ment matchthe cutouts inthe AA 501 circuit board edge Tektronix ServiceCenter for service or repair,attach atag
Fig. 2-1. Installation and removal.
ENGLISH 2-1
Scans by AR TEK MEDL4 =>