HP-739A-Manual_early 电路图.pdf

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1、I . : HP Archive . . This vintage Hewlett Packard document was preserved and distributed by www. Please visit us on the web ! . . On-line curator: Tony Gerbic RadioFans.CN 收音机爱 好者资料库 I OPERATING AND SERVICING MANUAL MODEL 739A FREQUENCY RESPONSE TEST SET SERIALS PRFWEB . m - o16-00483 Copyright HEWL

2、ETT-PACKARD COMPANY 1959 275 PAGE MILL ROAD, PAL0 ALTO, CALIFORNIA, U. S. A. 73941001-10/59 RadioFans.CN 收音机爱 好者资料库 Model 739A Page 1 SECTION I DESCRIPTION The Model 739A Frequency Response Test Set simplifies frequency response determination by providing a convenient constant amplitude re- ference

3、voltage of variable frequency. Frequency response of vacuum tube voltmeters, oscilloscope, video amplifiers and filters from 5 cps to 10 mc* can be quickly and easily checked. The Frequency Response Test Set contains a wide range oscillator, special voltmeter and step attenu- ator as shown in Figure

4、 1. The osciilator generates constant amplitude signals between 300 kc and 10 mc. The monitoring circuit is flat from 5 cps to 10 mc so that an external oscillator suchas Model 200s can be used to reduce the lower frequency limit to as low as 5 cps. Oscillator output is applied to the monitoring vol

5、tmeter, which samples the input to a stepattenuator. An arbitrary reference level is maintained on the monitoring meter as the frequency setting is varied. The attenuator reduces the signal to an appropriate output level which appears acfoss 50 ohms at the end of the special output cable supplied. A

6、TTEN. .30-IO MC IOdb STEPS METER SET 50 5 2 MONITOR 0 5 RO E n INPUT Figure 1. Model 739A Block Diagram FREQUENCYRANGE: INTERNAL OSCILLATOR: REQUIREMENTS FOR EXTERNAL OSCILLATOR: FREQUENCY RESPONSE OF MONITORING CIRCUIT: OUTPUT: DIMENSIONS: ACCESSORIES FURNISHED SPECIFICATIONS 5 cycles* to 10 mc. 30

7、0 kc to 10 mc in 3 ranges. Frequency range 5 CPS to 300 kc requires 3 volts into 50 ohms, distortion less than 1%. Flat within 50.5% from 10 CPS to 5 mc; within+0.5%, -l.S%, 5 cps to 10 mc. Monitor circuit is average responding. At least 3 volts across 50 ohm cable termination. Adjustable in 10 db s

8、teps by a Oto70 db attenuator. Fine adjustment pro- vided. Rack Mount: 7 in. high, 19 in. wide, 9 in. deep. 739A-16A Output Cable, 50 ohm termination. BNC to shielded dual banana plug, (extra cables available on special order). * Extended frequency range when used with Model 200s Oscillator. RadioFa

9、ns.CN 收音机爱 好者资料库 Model 739A Page 3 SECTION I1 OPERATION Calibrate the device under test with an accurate voltage standard, such as the Model 738A Voltmeter Calibrator. This voltage standard should have an output frequency between 100 and 1000 cps. 1) Connect the device under test to the Frequency Re

10、sponse Test Set OUTPUT connector, using the special terminated output cable provided. 2) Connect a suitable oscillator, such as the Model 200s Oscillator, to the EXTERNAL INPUT connector on the Frequency Response Test Set. 3) Set the external oscillator to the frequency used for calibration. 4) Set

11、the RANGE SELECTOR to EXTERNAL. Set a reference on the device under test using the external oscillator AMPLITUDE control and the OUTPUT ATTENUATOR of the Test Set. The internal oscillator is a single pentode (V2) located inside the shield on top of thechassis. The oscillator plate and screen voltage

12、s are controlled by a series regulator triode (Vl). This series regulator is controlled by a two stage differential amplifier (V3 and V4) that senses the amplitude of the voltage applied to the OUTPUT AlTENUATOR. The combined action of the series regulator, dif- ferential amplifier and output amplit

13、ude sensing circuits keeps the output constant over the range of the internal oscillator. The power supply circuit is conventional, using NOTE - Always use the OUTPUT ATTENUATOR range that corresponds to the desired input to the device under test. This will assure a Test Set meter indication near SE

14、T LEVEL. 5) Set the meter in the Test Set to SET LEVEL with the METER SET control. 6) Shift to any other frequency within the range of the Test Set or external oscillator. Return the meter to SET LEVEL using the oscillator AMPLITUDE control. Note any deviation from the reference set in step 4 on the

15、 device under test. 7) Repeat steps 3 through 6 if you change the range switch on the device under test. Repeat step 6 for all frequencies you desire to check. SECTION Ill MAINTENANCE glow discharge tubes to regulate the differential amplifier voltages. Tube element voltages are not listed on the sc

16、he- matic diagram since they vary radically with fre- quency and output AMPLITUDE control setting. The only adjustments in the oscillator circuit are for initial dial calibration and should not need fur- ther attention. Another adjustment (C16) is pro- vided in the meter circuit. This meter frequenc

17、y response adjustment should not be touched unless you have accurate means of checking the accuracy of the reference meter between 7 and 10 mc. Page 4 u B I 4 a 3 ro i Sect.V Page 1 i 1 1 SECTION Iy TABLE OF REPLACEABLE PARTS N O T E Readily a v a i l a b l e s t a n d a r d - c o m p o n e n t s ha

18、ve been used in t h i s instrument, whenever possible. However, s p e c i a l c o m p o n e n t s may be obtained f r o m y o u r l o c a l Hewlett- P a c k a r d r e p r e s e n t a t i v e o r f r o m t h e f a c t o r y . When o r d e r i n g p a r t s always include: 1. Stock Number. 2. Complete

19、 description of p a r t including c i r - cuit r e f e r e n c e . 3. Model n u m b e r and s e r i a l n u m b e r of i n - s t r u m e n t . 4. If p a r t is not l i s t e d give complete d e s c r i p - tion, function, and location of p a r t . If there a r e any corrections for the Table of Repl

20、aceable P a r t s they w i l l be listed on a n Instruction Manual Change sheet at the front of this manual. Page 2 Model 739A TABLE O F REPLACEABLE PARTS CIRCUIT REF. c1 c 2 c3, 4 c 5 C6 c 7 C8 c 9 thru Cll C12, 13, 14, 15 C 16 C 17 C18, 19 c20, 21 C22 , 23, 24 CR1, 2 ZR3, 4 DS1 See It Lid DESCRIPT

21、ION, MFR. * 10 ph *lo% Meter Cable, power Resistor: fixed, composition, 33 ohms *lo%, 1 w Resistor: fixed, composition, 1000 ohms +lo%, 1 W Resistor: fixed, composition, 1000 ohms +lo%, 1/2 W Resistor: fixed, composition, hms +lo%, 1 W r Res isto r : f ixed, compo sit ion, 1 megohm *lo%, 1/2 W Resis

22、tor: fixed, deposited carbon, 667,000 ohms +l%, 1/2 W Resistor: fixed, composition, 470,000 ohms *lo%, 1/2 W Resistor: fixed, deposited carbon, 4 megohms +l%, 1/2 W Resistor: fixed, deposited carbon, 5.55 megohms *l%, 1/2 W Resistor: fixed, composition, 220,000 ohms *lo%, 1/2 w E* LL* LL* CG* BG zfp

23、* HP* B* B* B* B* B* NN* B* NN* NN* B* See It L i s t o f Manufacturers Code Letters For Replaceable p2 # Total quantity used in the instrument. ( $ 3 STOCE NO. 211-18 211-20 125-UG 291/U 48-54 u2-%8 f14 B12-56 24-33 24-1K 23-1K 24-8af -74c 2-74H 2-74N T39A- 16A :8 Tableii. - # - 1 1 2 1 2 1 fd 1 2

24、1 2 1 # Total quantity used in the instrument. LIST OF CODE LETTERS USED IN TABLE OF REPLACEABLE PARTS TO DESIGNATE THE MANUFACTURERS CODE I L a R A B E F G H HP I J K L M N 0 P Q R S T U V W X Y Z AA BB cc DD EE FF GG HH II JJ KK LL MM NN 00 PP QQ RR ss TT uu vv ww xx YY n t AB AC AD AE AF AG A H A

25、I AJ , MANUFACTURER Aerovox Corp. Allen-Bradley Co. Amperite Co. Arrow, Hart & Hegemon Bussman Manufacturing Co. Carborundum Co. Centralab Cinch-Jones Mfg. Co. Hewlett-Packard Co. Clarostat Mfg. Co. Cornell Dubilier Elec. Co. Hi-Q Division of Aerovox Erie Resistor Corp. Fed. Telephone & Radio Carp.

26、General Electric Co. General Electric Supply Corp. Girard-Hopkins Industrial Products Co. Internotional Resistance Co. Lectrohm Inc. Littlefuse Inc. Maguire Industries Inc. Micamold Radio Corp. Oak Manufacturing Co. P . R. Mallory Co., Inc. Radio Carp. of America Sangamo Electric Co. Sarkes Tarzian

27、Signal Indicator Co. Sprague Electric Ca. Stackpole Carbon Co. Sylvania Electric Products Co. Western Electric Co. Wilkor Products, Inc. Amphenol Dial Light Co. of America Leecraft Manufacturing Co. Switchcraft, Inc. Gremar Manufacturing Co. Carad Corp. Electra Manufacturing Co. Acro Manufacturing C

28、o. Alliance Manufacturing co. Arc0 Electronics, Inc. Astron Corp. Axel Brothers Inc. Belden Manufacturing Co. Bird Electronics Corp. Barber Colman Co. Bud Radio Inc. Allen D. Cardwell Mfg. Co. Cinema Engineering Co. Any brand tube meeting RETMA standards. Corning Glass Works Dale Products, Inc. The

29、Drake Mfg. Co. Elco Corp. Hugh H. Eby Co. Thomas A. Edison, Inc. Fansteel Metallurgical Corp. General Ceramics & Steatite Corp. The Gudeman Co. ADDRESS New Bedford, Mass. Milwaukee 4, Wis. New York, N. Y. Hartford, Conn. St. Louis, Mo. Niagara Falls, N. Y. Milwaukee I, Wis. Chicago 24, 111. Palo Alt

30、o, Calif. Dover, N. H. South Plainfield, N. J. Olean, N. Y. Erie 6, Pa. Clifton, N. J. Schenectady 5, N. Y. Son Francisco, Calif. Oakland, Calif. Danbury, Conn. Philadelphia 8, Pa. Chicago 20, 111. Des Plaines, 111. Greenwich, Conn. Brooklyn 37, N. Y. Chicago IO, 111. Indianapolis, Ind. Harrison, N.

31、 J. Marion, 111. Bloomington, Ind. Brooklyn 37, N. Y. North Adams, Mass. St. Marys, Pa. Warren, Pa. New York 5, N. Y. Cleveland, Ohio Chicago 50, 111. Brooklyn 37, N. Y. New York, N. Y. Chicago 22, 111. Wakefield, Mass. Redwood City, Calif. Kansas City, Mo. Columbus 16, Ohio Alliance, Ohio New York

32、13, N. Y. East Newark, N. J. Long Island City, N. Y. Chicago 44, 111. Cleveland 14. Ohio Rockford, 111. Cleveland 3, Ohio Plainville, Conn. Burbank, Calif. Corning, N. Y. Columbus, Neb. Chicago 22, 111. Philadelphia 24, Pa. Philadelphia 44, Pa. West Orange, N. J. North Chicago, 111. Keasbey. N. J. S

33、unnyvale, Calif. CODE LEllER AK AL A M A N A 0 AP A Q AR AS AT AU AV A W AX AY AZ BA BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BO BR BS ET BU BV BW BX BY BZ CA CB CD CE CF CG CH CI CJ CK CL C M CN co CP CQ CR cs CT cu cv cw - MANUFACTURER Hammerlund Mfg. Co., Inc. Industrial Condenser Corp. lnsuline

34、 Corp. of America Jennings Radio Mfg. Corp. E. F. Johnson Co. Lenz Electric Mfg. Co. Micro-Switch Mechanical Industries Prod. Ca. Model Eng. & Mfg., Inc. The Muter Co. Ohmite Mfg. Co. Resistance Products Cc. Radio Condenser Co. Shallcross Manufacturing Co. Solar Manufacturing Co. Sealectro Corp. Spe

35、ncer Thermostat Stevens Manufacturing Co. Torrington Manufacturing Co. Vector Electronic Co. Weston Electrical Inst. Corp. Advance Electric & Relay Co. E. 1. DuPont Electronics Tube Corp. Aircraft Radio Corp. Allied Control Co., Inc. Augat Brothers, Inc. Carter Radio Division CBS Hytron Radio & Elec

36、tric Chicago Telephone Supply Henry L. Crowley Co., Inc. Curtiss-Wright Corp. Allen 9. DuMont Labs Excel Transformer Co. General Radio Co. Hughes Aircraft Ca. International Rectifier Corp. James Knights Co. Mueller Electric Co. Precision Thermometer & Inst. Co. Radio Essentials Inc. Raytheon Manufac

37、turing Co. Tung-Sol Lamp Works, Inc. Varian Associates Victory Engineering Corp. Weckesser Co. Wilco Corporation Winchester Electronics, Inc. Mako Tool & Die Oxford Electric Corp. Camloc-Fastener Corp. George K. Garrett Union Switch & Signal Radio Receptor Automatic 8 Precision Mfg. Co. Bassick Co.

38、Birnbach Radio Co. Fischer Specialties Telefunken (c/o MVM, Inc.) Potter-Brumfield Co. Cannon Electric Co. Dynac, Inc. Good-All Electric Mfg. Co. ADDRESS New York I , N. Y. Chicago 18, 111. Manchester, N. H. Son Jose, Calif. Waseca, Minn. Chicago 47, 111. Freeport, 111. Akron 8, Ohio Huntington, Ind

39、. : Chicago 5, 111. Skokie, Ill. Harrisburg, Pa. Camden 3, N. J. Collingdale, Pa. Lor Angeles 58, Calif. New Rochelle, N. Y. Attleboro, Mass. Mansfield, Ohio Van Nuys, Calif. Los Angeles 65, Calif. Newark 5, N. J. Burbank, Calif. Son Francisco, Calif. Philadelphia 18, Pa. Boonton, N. J. New York 2 I

40、, N. Y. Attleboro, Mass. Chicago, 111. Danvers, Mass. Elkhart, Ind. West Orange, N. J. Carlstadt, N. J. Clifton, N. J. Oakland, Calif. Cambridge 39, Mass. Culver City, Calif. El Segundo, Calif. Sandwich, 111. Cleveland, Ohio Philadelphia 30, Pa. Mt. Vernon, N. Y. Newton, Mass. Newark 4, N. J. Polo A

41、lto, Calif. Union, N. J. Chicago 30, 111. Indianapolis, Ind. Santa Monica, Calif. Los Angeles 42, Calif. Chicago 15, 111. Paramus, N. J. Philadelphia 34, Pa. Swissvale, Pa. New York I I, N. Y. Yonkers, N. Y. Bridgeport 2, Conn. New York 13, N. Y. Cincinnati 6, Ohio New York, N. Y. Princeton, Ind. Lo

42、s Angeles, Calif. Polo Alto, Calif. Ogallala, Nebr. CLAIM FOR DAMAGE IN SHIPMENT The instrument should be tested as soon as it is received. If it fails to operate properly, or is damaged in any way, a claiiri should Le filed with the carrier. A full report of the damage should be obtained by the cla

43、im agent, and this report should be forwarded to UP. We will then advise you of the disposition to be made of the equipment and arrange for repair or replacement. Include model number and serial number when referring to this instrument for any reason. W A R R A N T Y Hewlett-Packard Company warrants

44、 each instrument manufactured by them to be free from defects in material and workmanship. Our liability under this warranty is limited to servicing or adjusting any instrument returned to the factory for that purpose and to replace any defective parts thereof. Klystron tubes as well as other electr

45、on tubes, fuses and batteries are specifically excluded from any liability. This warranty is effective for one year after delivery to the original purchaser when the instrument is returned, transportation charges prepaid by the original purchaser, and when upon our examination it is disclosed to our

46、 satisfaction to be defective. If the fault has been caused by misuse or abnormal conditions of operation. repairs will be billed at cost. In this case, an estimate will be submitted before the work is started. If any fault develops, the following steps should be taken: 1. Notify us, giving full det

47、ails of the difficulty, and include the model number and serial number. On receipt of this information, we will give you service data or shipping instructions. 2. On receipt of shipping instructions, forward the instrument prepaid, to the factory or to the authorized repair station indicated on the

48、instructions. If requested, an estimate of the charges will be made before the work begins provided the instru- ment is not covered by the warranty. S H I P P I N G All shipments of Hewlett-Packard instruments should be made via Truck or Railway Express. The instruments should be packed in a strong exterior container and surrounded by two or three inches of excelsior or similar shock-absorbing material. DO NOT HESITATE TO CALL ON US 275 PAGE MILL ROAD PAL0 ALTO.CALlF. U.S.A. CABLE c t rc