HP 5304A Service manual

OPERATING AND SERVICEMANUAL
TIMER/COUNTER
5304A
w.0«
(iOtl
HEWLETT M PACKARD

CERTIFICATION
The Hewlett-Packard Company certifies that this instrument was
thoroughly tested and inspected and found to meet its published
specifications when it was shipped from the factory. The Hewlett-
Packard Company further certifies that its calibration measure-
ments are traceable to the U.S. National Bureau of Standards to
the extent allowed by the Bureau's calibration facility.
WARRANTY AND ASSISTANCE
ThisHewlett-Packardproduct is warrantedagainstdefects in
materials and workmanship.Thiswarrantyapplies forone year
from the date of delivery, or,inthe case of certainmajor com-
ponentslisted inthe manual, forthe specifiedperiod.
We willrepair or replaceproductswhichprove tobe defective
during the warrantyperiodprovidedthey are returned to Hewlett-
Packard. No otherwarranty is expressed or implied. Wearenot
liable for consequentialdamages.
Servicecontracts or customerassistanceagreements are available
for Hewlett-Packardproductsthatrequiremaintenance and repair
on-site.
Forany assistance,contactyournearestHewlett-PackardSales and
ServiceOffice.

III'M<>1 >EL5;MMATIMERcolINTER
Reeord of Revisions(ManualChangeI'ages)
REVISION
NUMBER DATE
ISSUED DATE
INSERTED INSERTED
BY

HI' MODEL:">;{( MATIMERCO IJNTK K
Record of Revisions(ManualChangePages)
REVISION
NUMBER DATE
ISSUED DATE
INSERTED INSERTED
BY
I

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SECTION IXD
TIMER/COUNTER
5304A
SERIALPREFIX:1212A00467
Thissectionappliesdirectly toHP Modelf>H()lA,Timer
Countershavingserialprefixnumberl2P2A004ti7, and
must he insertedinto the 5300AMeasuringSystem M uiual.
NEWERINSTRUMENTS
ThisSectionwithenclosed"ManualChangesPages"
appliesdirectly toHP Model5.'U)4ATimerCountershaving
prefixnumbersabove1212A00467.
OLDERINSTRUMENTS
Changesre(|uired to back-datethisSection for olderinstru-
ments arcin Section IXI), Subsection VII.
CopyrightHEWLETT-PACKARDCOMPANY 1973
5301 STEVENSCREEKBLVD..SANTACLARA.CALIF.95050
Printed: AUG1973
HP PART NO. Jjjf
MANUAL05304-90006HEWLETT M, PACKARD

Model5304 A
Table of Contents
TABLE OF CONTENTS
Sectioni'age
IXI) 5304ATimer/Counter
Subsection
I GENERALINFORMATION91)1-1
91)-1-1.Introduction9D-1-1
91)-1-2.Description9D-1-1
91)-1-4.Purpose andUseof Section IXI) 91)-1-1
91)1-6.InstrumentIdentification91)1-1
91)1-8.ManualChanges and Options91)1-1
II INSTALLATION9D-2-1
9D-2-1.Unpacking and Inspection9D-2-1
9D-2-3.Storage and Shipment9D-2-1
9D-2-5.Installation and Removal of Plug-On9D-2-1
9D-2-8.PortableOperation9D-2-1
III OPERATION9D-3-1
9D-3-1.OperatingInformation 91)3-1
IV THEORY OF OPERATION9D-4-1
9D-4-1.Introduction9D-4-1
9D-4-4.InputAmplifiers9D-4-1
V MAINTENANCE9D-5-1
9D-5-1.Introduction9D-5-1
9D-5-3.RecommendedTestEquipment9D-5-1
9D-5-5.InstrumentAccess9D-5-1
9D-5-7.PeriodicMaintenance9D-5-1
9D-5-9.Maintenance and Repair9D-5-1
9D-5-13.InstrumentTroubleshooting9D-5-1
9D-5-16. DC BalanceAdjustment9D-5-3
VI REPLACEABLEPARTS9D-6-1
9D-6-1.Introduction9D-6-1
9I)-o-3.OrderingInformation9D-6-1
VII MANUALCHANGES AND OPTIONS9D-7-1
9D-7-1.ManualChanges9D-7-1
9D-7-3.NewerInstruments9D-7-1
9D-7-5.OlderInstruments9D-7-1
9D-7-7.Options9D-7-1
VIIICIRCUITDIAGRAMS 91)8-1
9D-8-1.General9D-8-1
ii

Model5304A
List of Figures
List of Tables
LIST OF FIGURES
FigurePage
91)1-1.5304ATimer/Counter9D-1-0
9D-3-1SignalConditioningUsingAttenuator,Level and
SlopeControls9D-3-1
9D-3-2.Front-PanelControls and Connectors9D-3-2
9D-3-3.Rear-PanelConnectors9D-3-4
9D-3-4.MakingSelf-CheckMeasurement9D-3-5
9D-3-5.MakingFrequency A Measurements9D-3-H
9D-3-6.MakingPeriodAverageMeasurements9D-3-7
9D-3-7.MakingTimeIntervalMeasurements9D-3-8
9D-3-8.Totalizing9D-3-10
9D-5-1.SeparationProcedure9D-5-2
9D-5-2.Frequency A TroubleshootingDiagram9D-5-5
9D-5-3.PeriodAverage A TroubleshootingDiagram9D-5-7
9D-5-4.TimeIntervalTroubleshootingDiagram9D-3-11
9D-5-5.Open/CloseTroubleshootingDiagram9D-5-13
9D-5-6.('heckTroubleshootingDiagram9D-5-I5
9D-8-1. Al TimeIntervalBoardAssembly,
A2 AttenuatorBoardAssembly9D-8-5
LIST OF TABLES
1 ablePage
9D-1-1.5304ATimer/CounterSpecifications9D-1-2
9D-5-1.In-CabinetPerformanceChecks9D-5-16
9D-6-1.ReplaceableParts9D-6-2
9D-6-2.ManufacturersCodeList9D-6-5
9D-8-1.InstrumentInterconnectionList9D-8-2
in

Model5304A
GeneralInformation
Figure91)-1-1.5304ATimer/Counter
FREQ A
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w 5304ATIMER/COUNTEROPEN/CLOSE
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9D-1-0

Model5.'{(MA
( ieneralInformatinn
SECTION IXD
5304ATIMER/COUNTER
SUBSECTION I
GENERALINFORMATION
9D-1-1.INTRODUCTION
9D-1-2.Description
9D-1-3. The Hewlett-PackardModel5304ATimer
Counter,whenpluggedonto anHP Model5300A
MeasuringSystem, is capable of: Measuring fre-
quencies upto10MHz, TimeIntervalmeasurements
from 500 nsec to 10,000seconds,PeriodAverage
over a range of10Hzto1MHz,and Totalizing.
The electrical and mechanicalspecifications are listed
in Table9D-1-1.
9D-1-4.Purpose andUseof Section IXD
9D-1-5.Section IXI) contains the documentation
necessary to operate,maintain, and repair theHP
Model5304ATimerCounterplug-on.Alsoincluded
are partslists,componentlocators, and schematics.
Thisinformation is intended tobe insertedinto the
5300AMeasuringSystemmanual as part of Section
IXof thatmanual.
9D-1-6.INSTRUMENTIDENTIFICATION
91)1-7. Hewlett-Packarduses a two-section,nine-
digitserialnumber(0000A00000)mounted onthe
rearpanel to identify the instrument. The first four
digits arethe serialprefix andthe lastfive digits
refer tothe specificinstrument. Ifthe serialprefix
on yourinstrumentdiffersfromthatlisted onthe
titlepage of thissection,there are differences
between the manual and yourinstrument.Iiower
serialprefixes are documented in Section IXI),
Subsection VIIand higherserialprefixes are covered
bya manualchangesheetincludedwith the manual.
9D-1-8.ManualChanges and Options
9D-1-9. The titlepagelists the serialprefixnumber
to whichthisinformationdirectlyapplies. Ifthe
serialprefix is differentfrom theone listed, a
changesheet is includeddescribing the required
changes. If thischangesheet is missing, the infor-
mation canbe supplied byany Hewlett-Packard
Sales and Serviceofficelisted in Section VIofthe
5300AMeasuringSystemManual.Options are listed
in Section IXI), Subsection VII.
9DII

Model5304A
GeneralInformation
Table91)1-1.5304 A Timer/CounterSpecifications
INPUTCHANNELS AANI)B
Range: DC coupled; 0to10MHz.
AC coupled; 100Hzto10MHz.
Sensitivity(min): 25mVrms sinewave
toIMHz.50mVrms sinewave to10
MHz.150mVp-p pulse at minimum
pulsewidth, 40 nsec.Sensitivity canbe
decreased by10or100 timesusing
ATTENUATORswitch.
Impedance: 1Mil shunted by lessthan 30pK
OverloadProtection: 250VrmsonXl()
and XI00attenuatorsettings. OnXI
attenuatorsetting 120Vrmsupto1kHz,
decreasing to10Vrmsat10MHz.
TriggerLevel:PRESETpositioncenters
triggeringabout 0 volts ±25mV,orcon-
tinuouslyvariableover the range of1Vto
+1V
timesattenuatorsettings.
Slope:Independentselection of triggering
on positive or negativeslope.
ChannelInputs:Common or separatelines.
GateOutput:Rearpanel BNC.TTLlow
levelwhilegate is open. Maybe used
to intensitymodulate anHP oscilloscope.
TIMEINTERVAL
Range: 500 nsec to10•sec.
Input:Channels AandB;canbe common
or separate
Overload:Maximumrecommendedlevels for
pulsesignals is2Vp-p. Clippingoccurs
at3Vp-p.
Resolution: 100 nsec to10msin decade
steps.
Accuracy: +1 count + timebaseaccuracy
+ triggererror.*
Display: fjs, ms,ors (seconds)withpositioned
decimalpoint.
TimeIntervalHoldoff:Frontpanel con-
centricknobwhichinsertsvariabledelay
of approximately 100 /jsec to100 msec be-
tweenSTART(Channel A)and enabling
STOP(Channel B);maybe disabled.Elec-
tricalinputsduringdelaytime are ignored.
Delay maybe digitallymeasured in CHECK
position.DelayOutput:rearpanel BNC.
TTLlow levelduringdelaytime. Maybe
used to intensitymodulate anHP
oscilloscope.
PERIODAVERAGE
Range: 10Hzto1MHz.
Input:Channel A.
PeriodAveraged: 1to10' automatically
selected for maximumresolution.
FrequencyCounted: 10MHz.
Accuracy:
+1
count + timebaseaccuracy
+ triggererror.**
Display: /JS,ms withpositioneddecimalpoint.
FREQUENCY
Range: 0to10MHz.
Input:Channel A.
GateTimes:Manuallyselected 0.1,1,or10
seconds.AUTOpositionselectsgatetime
to fill display for maximumresolutionwith-
ina 1-secondmeasurementtime.
Accuracy: +1 count + timebaseaccuracy.
Display: Hz,kHz,andMHz withpositioned
decimalpoint.
OPEN/CLOSE(Totalizing)
Range: 10MHz maximum.
Input:Channel A
Function:Inputsignaltotalizedwhilegate
open.Opening and closing of gateinitiated
by frontpanelpushbuttonswitch.
GENERAL
Check:Insertsinternal 10MHz reference
frequencyintoChannels AandB. Time
IntervalHoldoff maybe digitallymeasured
by switching to CHECK and TIME IN
TERVALpositions.
OperatingTemperature: 0°to 50°C.
PowerRequirements:Including5300A
mainframe,nominally 10 watts.Minimum
of3 hoursoperation(typically 5hrs)at20 C
to 30°Coperating and chargingtemperatures.
Weight: Net,1lb(0.9kg). Shipping, 314
lbs(1.5kg).
"Forany waveshape,triggererror is lessthan
±
0.005
SignalSlope (V/ps)/js
**Triggererror is lessthan ±0.3%ofone
period, i periodsaveraged for signalwith
40dBor bettersignal-to-noiseratio.
91)1-2