Model34904

SectionI

sEcTt0NI

GENERATINFORMATION

1 . 1lNTBoDucTl0N..

l-2. The Model 3490A Multimeter makesacvoltage,dc voltage, and resistancemeasurementswith 5-digit resolu- tion. It is capable of overrange measurementsup to l2O% of range on all except the 1000V ac and dc ranges. Polarity selection and display are automatic. Range selection is manual or automatic over all ranges on all functions. Options are available to provide data output, remote programming, sample-and-holdmeasure- ments,and ratio measurements.

1-3. This manual contains installation and operating instructions as well as maintenanceinformation for the Model 34904 Multimeter. Instrument specificationsand procedures for verifying proper operation are included. Proceduresare alsoincluded for adjustingthe instrument to its performarice specifications. Schematic diagrams, the theory of operation, and troubleshooting information are provided for use in maintaining the instrument.

14. This section of the manual contains the performance specificationsfor the Model 3490A and lists the available options. It also lists the accessoriessupplied with the Model 3490A and additional accessoriesthat are available.Instrumentand manualidentification information is alsoincluded.

1-5.SPECTFtCATI0NS.

l-6. Table l-l is a complete list of the Model 3490A critical specifications that are controlled by tolerances. Table l-2 contains generalinformation that describesthe operatingcharacteristicsof the Model 3490A.

l-7.Any changein the specifications due to manufac- turing, design, or traceability to the U.S. National Bureau of Standards will be listed on a manual change sheetincluded with this manual. The manual and manual changesheetsupersedeall previousinformation concerning specificationsof rhe 3490A.

r-8.0PT0NS.

l-9.The following options are availableto extend the usefulnessof the Model 3490A:

Option020: BCD/RemoteExpand

Option021: IsolatedDataOutput (BCD)

Option022: IsolatedRemoteControl

(Options021 and022 require

Option 020)

Option030: GeneralPurposeInterfaceBusI/O

(GPrB)
Option040or 045: Sample-and-HoldOption050: 34904 designedfor operationon 50 Hz powersourceOption060: 3490Adesigredfor operationon 60 Hz powersourceOption080: RatioI - Ill . ACCESSORIESSUPPLIED .

l-ll. The followingaccessoriesare suppliedwith the Model3490Aandits option asshown.

Suppliedwith all instruments:

Rack Mount Kit

03490-84401

PCExtender(2 x l8)

5060-s983

Suppliedwith Option 020:

 

Rearinput cable

o349Mt612

36-pinconnector

 

(mateswith Remoteconnector,J7)

l2sl{084

5Gpin connector

I 2sI -0086

(mateswith Data Output connector,J6)

RemoteJumperAssembly,

03490-66504

A.4

PCExtender(2x22)

5060{630

Suppliedwith Option 030:

 

l4-pin connector

 

(mates

12514142

with Triggerconnector,Jl l)
RemoteJumperAssembly,440349U66504
Rearinput cable

0349041612

PCExtender(2 x 22)

5060{630

Suppliedwith Option040:

 

S/HAnalogJumperAssembly,A24

0349046524

.-'S/HLogicJumperAssembly,A25

03490-66525

PCExtender(2 x l0)

50606032

Suppliedwith Option045:

 

S/HAnalogJumperAssembly,A24

0349U66524
S/HLogicJumperAssembly,A25

0349046525

PCExtender(2 x l0)

50606032

l4-pinconnector

 

(mateswith Triggerconnector,Jl l)

12514142

Suppliedwith Option080:

 

RatioJumperAssembly,A26

0349046526

PCExtender(2 x l0)

5060-6032

1 . 12ACCESSORIES.AVAITABLE .

l-13. Severalaccessoriesare availablefor use with the Model3490A. A servicevideotape,ProductNo. 90030C Option 705, will demonstrateuseof self-testand front panel symptoms to isolate failures.The -hp 111261^ accessoryprovides a set of IC referenceboards with

1-t