Resumen del contenido incluido en la página 1
o
.(D
s
c
L
g-F
R A T ruG AFiä3 s€Rtvt#ffi
o P E MAru
A l-
M
U ITIM ETE
R
7:'
;s,
;;:''
tt,,,,t,
349:04
?i'-"
';i:
'
;
HEWLETT
PACKARD
T
!-,
ö.,
A
(o.
D=.'
Resumen del contenido incluido en la página 2
HEWLE"WPACKARD CE RTI FI CATI tII O The Hewlett-Paclnrd Company certifins that this instrammt was thoroughly tested, ond. inspected and pu,blished to meet its fourd specifications whm it was shipped the The Hewlett- lrom factorU. Paclard Com,pany certifies tlmt its calibration rneo$re- further m,mts are traceable to the U.S. Natiornl Bureau of Standards to tlrc ertmt allowed by the Brneau's calibration facility. WARRA]TTY ATD ASSISTAITCE products All Hewlett-Packard are warrante
Resumen del contenido incluido en la página 3
v OPERATING AITD SERYICE MAIIUAI Manual Part No. 03490-90014 Microfiche Part No. 03490-90064 MODEL 3490A M U tTIM ETE R The main body of this manual applies to Serial Prefix 1211A !;:,' .: ;.t; : -: :i; '. Any changes made in instruments manufactured after this !:.. " "Manual :::: printing will be found in a Changes" supplement supplied with this manual. Be sure . to examine this supplement, if one exists for this manual, for any changes which apply to your instrument and record t
Resumen del contenido incluido en la página 4
Table of Contents Model3490A CONTENTS TABLE OF Page Section III (cont'd) Page Section Autoranging ........3-3 ......I-1 3-34. I. GENERALINFORMATION... ...1-l 3-36. ManualTrigger ......3-3 Introduction l-1. .'-.l-l 3-38. Self-TestOperation ....3-3 .... l-5. Specifications 340. DCVoltageMeasurements ........... 3-3 -......1-1 l-8. Options DC Rate and ...1-l 342. Sample AccessoriesSupplied l-10. ....34 ...1-1 ResponseTime. AccessoriesAvailable l-12. 344. Input Resistance .. . .. .. ..
Resumen del contenido incluido en la página 5
Table of Contents Model 34904 (Gont'd) TABLE 0F C0NTENTS Section Page (cont'd) page Section IV IV. THEORYOFOPERATION . ........4-I 4-130. PowerSupplies ... ...4-15 4-1. Introduction ...4-l 4-132. Self-TestFunction ....4-16 4-3. General Theory of Operation . . .4-l 4-134. LogicTest,No. I . ..+16 4-5. Signal Conditioning Circuits . . . . . . . . 4-l +137. lOVRangeZero,TestNo. 2 . ..... +17 4-7. ReferenceVoltages ...4-l 4-139. TurnoverError, TestNo. 3 . ....... 4-17 4-9. DC Amplifi
Resumen del contenido incluido en la página 6
Model3490A Table of Contents rABLE (Cont,d) OF CONTENTS V (cont'd) Page Section Section page VII. TROUBLESHOOTING Method AND 5-18. Ätemate . . ... .5-2 CIRCUITDIAGRAMS 5-2O-D0Common-ModeRejectionTest ......5-2 .......7-l 7-1. Introduction 5-22. A9Common-ModeRejectionTest ......54 ...7-l 7-3. Preliminary Troubleshooting 5-24- AC Normal-Mode Rejection Test .. ......54 ... ... . . .7-l 7'5. TroubleshootingTrees 5-26. DcVoltmeterlnput ........7-l 7-7- Access for Servicing Resistance Test
Resumen del contenido incluido en la página 7
Table of Contents Model 34904 LIST OF ILLUSTBATIONS Figure Page Figure Page 2-1 . Line Voltage Selection . . .2-l 4-23. Waveforms Illustrating 2-2. PowerCordConfigurations .... .......2-l Acquire/HoldMode. ......4-22 2-3. Model3490ADimensions ......2-2 4-24. Simplified Diagram and 24. Installation of Isolated BCD Output Operationof .. S/HCircuit A.. ....4-23 and Remote Options . . .. . .. .2-3 4-25. Simplified Diagram of S/H Circuit B . . . . .. .. .4-24 2-5. Data OutputConnections, Option 0
Resumen del contenido incluido en la página 8
Model3490A Table ofContents LIST 0F tLLUSTRAT|0NS (Cont,d) Figure Page Figure 7-22. Schematic Diagram, Reference and Page 7-i+. schematic Diagram, Ratio Circuits, sample/Hold Al, Al3 7431:144 AnalosCircuits, 7-24. Schematic Diagram, A27' Main ....... Logic, Al . . . . .745;1746 .7_671j_6g 7-35. Schematiö Diagram, 7-23. Schematic Diagram, Sample/Hold Clock LogicCircuit:,12S... andCounters,Al .. . .. ...7_6917_70 ...7_47174g 7-36. Block Dagram, 3490A 7-25. Schematic Diag
Resumen del contenido incluido en la página 9
34904 Model Section I sEcTt0N I GENERAT INFORMATION lNTBoDucTl0N. Option 040 or 045: 1.1. Sample-and-Hold Option 050: 34904 designed for operation on 50 Hz 3490A Multimeter makes ac voltage, The Model dc power source l-2. measurements with 5-digit and resistance resolu- Option 060: voltage, 3490A desigred for operation on 60 Hz of overrange measurements It is capable up to power tion. source of range on all except the 1000V ac and dc l2O% Option 080: Ratio Polarity selection and displa
Resumen del contenido incluido en la página 10
Section I Model 3490A most -hp of the 3490A logic IC's for use with the 1.14. INSTBUMENT AND IDENTIFICA- MANUAL lO529A Logic Comparator. Using these boards with the TION. Logic Comparator, a faulty IC can be isolated in seconds without removing it from the circuit. A spare parts set, l-1 5. Instrument identification by serial number is -hp- 11127A, is available for the 3490A. This set located on the rear panel. Hewlett-Packard uses a contains the most critical components of the 3490A
Resumen del contenido incluido en la página 11
Model 3490A Section I Table 1-1 . Specifications. DC VOLTAGE Temperature Coefficient C to l0o 50P Cl: r (0.002 % of Display: . Full-Rangp reading + 0.001 % r of range)F 10O.oOo C :1P9P.Y v . rooo.öö v Voltage Coefficient (1000V i I;IBBBB V range): Add ppm 0.01 per Volt/ kHz to % of reading Overrange: 2O % onall ranges except 1000 V range t Aeuracy: l% of reading + To of rangel Input lmpedance: .1 V Range 1V-f00{,VRangas 2 Mf, t 1 %shunted by: ( 65 pF without rear input
Resumen del contenido incluido en la página 12
Model 34904 Section I (Cont'd). 1-1. Specifications Table (Option RATIO 0801 / Ranges: External Reference Input Configuration: Ratio Measurement 1V:1O.1 Vtot1.2V is conlmon with Input Low. External Reference Low 3 wire; 10V: tlVto112V positive or negative with High may be External Reference if the Ext- Ref' for greater accuracy should be used {1 V range respect to Low. nput I V. is between 1 V and 1.2 voltage = Ratio Ext. Ref. Input Ranges: V to 1000 V DC: o.1 Resistance: > 107O
Resumen del contenido incluido en la página 13
Model34904 Section I Table 1-1. (Cont,d.) Specifications (OPtion 040/0451 SAMPLE/HOLD Full-range Display: Sample/Hold Measurement (DC Accuracy function, I V through 1ü)0 V ranges!: (% oÄ t of reading + oI rcngel r 1.00fi) v (23o 24 hours c r 10 c) r +0.0151 {0.01 + v Sample/Hold measurement 10.q)0 displar/ is 4 full (23o 30.days c r so c) (0.01 r + 0.015) "1 ", plus ! V digits overrange 100.00 (23o 90 days c r c) (O.01 so r + 0.015) r 1000.0 v 6 months (239 C r (0.02 So
Resumen del contenido incluido en la página 14
Model 34904 I Section (Cont'd.) Table 1-2. General lnformation dVs/u (CONT'DI HOLD SAMPLE of signal as measured in increments Slope that the waveform between small enough Sample/Hold AC Characteristics: points or achieves measurement approaches linearitV. Maximum rate of change of input voltage to maintain = typical factor for each Velocity factor. The K1 tracking: is as follows, range 2.5 % of range/ps on the 10 V and 1 0OO V ranges. 5 % of range/prs on the 1 V and 10O V ranges. Facto
Resumen del contenido incluido en la página 15
Model3490A Section II SECTION tl INSTATI.ATION AN D INTERFACE CTloN. 2.r. |NTR0Dt IOOV--r r- 20v-l I r-r 2-2. This section contains information and instructions ilil installing and interfacing necessary for the Model 3490A Lzqov----l I ' \-22OV Included Multimeter. are initial inspection procedures, grounding power and requirements, environmental infor- IOO Volts mation, installation instructions, interconnection pro- l@V- r- cedures, and instructions for repackaging for shipment. rzov
Resumen del contenido incluido en la página 16
II Model 3490A Section 2.16. INSTALLATION. c. Install 03490-60306 Isolated BCD Module in the right opening in the instrument guard using screws 2-17. Bench Use. provided (see Figure 2-4). 2-18. The Model 3490A is shipped with plastic feet and d. If Isolated Remote (lll22L) is not installed at tilt stand in place, ready for use as a bench instrument. this time, install cover plate 03490-04117 over the left The the instrument front of may be elevated for in the guard. opening If Isolated Remo
Resumen del contenido incluido en la página 17
Section Il Model3490A (F OUTGUARD REMOTE I 03490- 665t2 A8J IO aa,rs 03490-66510 I - - cABLE w7 / l<- . f--- REMOTE ISOLATED BCD MODULE TSoLATED : | - MOOULE 03490- 60308 05490 60306 r-l rffi l_J I | -J- --\ I' W4 I ;+CABLE i ___/ . rY6 ;<-caBLE t\ - E TNGUARD BcD JJiJV-99JWt AI.J8 03490-56511 AIJ 7 f-1 -_ Figure 24. Installation of lsolated BCD Output and Remote Options. W7 between this assembly and the outguard side of the range, function, polarity and overload information
Resumen del contenido incluido en la página 18
Section II Model34904 -s t** i 3i {JrJ ü,1t; 7N TA OUTPUT COTruECTOR .IO oPTtoN 021 ,^j -8 : äF cö Mating Connector: i: ^j3 -hp- 6s Part No. Ed 1251€086 z9 =:== ä Amphenol No. 57-30500-378 8885 996< qi :! z ;9eFe22 ?ä;-;03":' Y 3 EKBö ? laEFä=; iää g ; 5 LOGIC LEVELS DATA FLAG (Print Command Outputl Output = Lines: HIGH + 39 V t Changes 1.5 V,4OO pA from LOW HIGH rnax. to at beginning of measuremenr = LOW + 0.3 V r 0J V, lS and returns mA rnax. to LOW at completion of a
Resumen del contenido incluido en la página 19
Model34904 Section II REMOTE INPUT CONNECTOR J7 oPTtoN 022 FE lo rE=ä;: e t:uE3X:I-- F 6 s i ä 52 H * E I = qd 5 fr i F 3 ä E ? " ; 3 2- 39H;;5EEiF== 34904-B-296a ä-j=!9il äEHäEä t:Litr Mating Connector: EF!!A -hp- Part No. 1251 {O84 = Ir qc Amphenol No. * 57-3Ob00-37S - .< =a * LOGIC LEVELS (Cont'd) INPUT SIcNALS = . + t pA lnput Lines: HIGH 3.9 V 1.5 V, 100 rnax; or Sample/Hold Programming (Option O40): open circuit Mode Delay = LOW + 0.3 V I 0.3 V, 2 mA rnax.; or contact Track
Resumen del contenido incluido en la página 20
II Model 3490A Section -hp- No. (Amphenol connector J7 is Part l25l{084 mating end Figure connector; the other is unterminated. 57-30360-375). This connector is supplied with the 2-7 also shows the wire colors in this cable. Control option Remote 2-36. Purpose lnterface Bus General Connections. 2-34. Rear Input. 2-37 . Figure 2-9 shows the signal connections at the rear panel GPIB connector, Il2, and. gives a brief description 030 provide panel 2-35. Options 020 and a rear input of each
