HP-200i-Manual 电路图.pdf

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1、HP Archive This vintage Hewlett Packard document was preserved and distributed by www. Please visit us on the web ! Thanks to on-line curator: Kenneth Kuhn for supplying and scanning this vintage document. RadioFans.CN 收音机爱 好者资料库 Ir 3NS MODEL 2001 . HEWLETT C Y PACKARD Laboratory 5nsfrumen for Speed

2、 and .%accuracy 395 C A G E MI11 R O A D * P A 1 0 A L T O * C A L I F O R N I A RadioFans.CN 收音机爱 好者资料库 AUDIO OSCILLATOR Model 200I Frequency,. . 6 to 6,aoO CPS. Calibratlon main dial two bands (A - 6-20; B - 20-60) Frequency 1 1 1 0 10 100 lo0 6 - 2O CPS ao - 60 cps 60 - 200 cps 200 - 6(x cps 600

3、- xKo cps ZOO0 6ooo cps Stability (frequency). . under normal e conditions. standard from time t o time, an accuracy o f better than 1% can be maintained. Distortion (Rated Output) Less than 1 % above 10 cps. Hum . Less than 0.1% of maximum output voltage. Power Supply . 115 volts, 60 cycles, 5 0 wa

4、tts. Fuse Rating 1 amper RadioFans.CN 收音机爱 好者资料库 2001 0 Page 2 I . GENERAL The Hewlett-Packard Model 200I is a resistance-tuned oscillator covering the range from 6 cps to 6000 cps, and is designed for application in interpolation work, is 6 inches in diameter, with calibrations covering approximate

5、ly 300 degrees. total frequency range of the instrument, The main frequency control dial There are more than 750 calibrated points for the toal 11, CIRCUIT DESCRIPTION. The Oscillator Section of the Model 200i is a two-stage resis- tance-coupled amplifier over which bath positive and negative feed-

6、back are applied. selective resistance-capacitance combination which is used to control the frequency of oscillation. lize the operation of the circuit. The amount of negative feedback is determined by a resistance network which contains a non-linear element in the form of a 6 watt incandescent lamp

7、, This element controls the amount of feedback i n accordance with the amplitude of oscillation and consequently maintains the proper operating point in the system, The positive feedback network is a frequency- Negative feedback is used t o stabi- The Amplifier Section is a two-stage resistance-coup

8、led output amplifier Feedback is used in this circuit to eliminate distor- tion and to provide a good frequency response over the entire range of the instrument. This amplifier is designed to deliver 10 volts into a 1000 ohm load over the entire frequency range. The internal impedance of the output

9、system is low enough so that the output voltage is not critical with load. However, load resistance loss than 1000 ohms will tend to increase the distortion when the volume control is set for full output and will also decrease the maximum output voltage obtainable. 1x1. OPERATION. Ordinarily, a warm

10、-up period is not required. However, when the unit is first put into operation, or when it has been standing idle for a long time, the instrument should be allowed to run for ten or fifteen minutes before it is used, The Output Frequency I s selected by tho main dial, This dial is located behind the

11、 front panel, so that only part of it I s visi- ble through the window. below this window, and under the frequency control know is a vernier for fine tuning. which read directly in cycles per second for the lowest frequency ranges The frequency control knob I s directly The dial has two sets of cali

12、brations, both of 2001 Page 3 The Frequency Range Switch on the lower left side of the panel indicates the particular dial calibration and multiplying factor t o use, The Output Voltage is controlled by the volume control at the right side of the panel. This control is situated in the circuit betwee

13、n the oscillator and the output amplifier, When very small audio voltages are desired, it is good practice to use an attenu- ator between the oscillator and the equipment being driven. This will aid i n keeping the hum level far below the audio signal. The Model 200i is designed to operate on 115 vo

14、lts at 5 0 t o 60 cycles per second. will have very l i t t l e effect on the instrument because of the volt- age-regulator circuit incorporated, However, changes in line voltage of o d 4 d Range Switch m e r Switch 1 ampere fuse Power Transformer 600 V paper 600 V mica 450 V electrolytic 600 V pape

15、r 450 v electrolytic 450 V electrolytio 450 V electrolytic 800 V paper 450 V electrolytic 1500 ohms 1000 ohma 560 ohms 5 K 25 K 10 K 3300 ohms 56K 56K % K 5 6 K 5 W K 560 Ohms 5 K 10 K 56OK 33 K 25 K 47 K 15 K 50 ohms 100 K 100 K 6SJ7 6% or 6F6 6sJ7 6% 6r6G 6Sg7 VRl.50 5Y3GT 1 w wirewound variable r

16、esistor 1 W composition 10 W wirewound variable resistor 1 W composition 1 W composition 1 W composition 1 W composition 1 W composition 1 W composition 1 W composition 1 w composition s 10 w wirewound 1 W composition 1 W composition 1 W composition variable resistor 1 W composition 2 W composition

17、variable resistor 1 W composition 1 W composition 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 claim should be filed with the carrier. A full report of the damage should be obtained by the claim a

18、gent, and this report should be forwarded to us. We will then advise you of the disposition to be made of the equipment and arrange for repair or replace- ment. Include model number, type number and serial number when referring to this instrument for any reason. WARRANTY Hewlett-Packard Company warr

19、ants each instrument manu- factured by them to be free from defects in material and work- manship. 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 (except tubes, fuses and batter

20、ies). This warranty is effective for one year after delivery to the original purchaser when the instrument is re- turned, transportation charges prepaid by the original pur- chaser, and which upon our examination is disclosed to our satis- faction to be defective. If the fault has been caused by mis

21、use 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 details of the difficulty, and include the model number, type number

22、and serial number. On receipt of this information, we will give you service instructions or ship- ping data. 2. On receipt of shipping instructions, forward the instru- ment prepaid, and repairs will be made at the factory. If re- quested, an estimate of the charges will be made before the work begi

23、ns provided the instrument is not covered by the warranty. SHIPPING All shipments of Hewlett-Packard instruments should be made via Railway Express. The instruments should be packed in a wooden box and surrounded by two to three inches of excel- sior or similar shock-absorbing material. DO NOT HESIT

24、ATE TO CALL ON US H E W L E T T - P A C K A R D COMPANY L a b o r a t o r y Instruments for Speed and Accuracy P A L 0 A L T 0 , C A L I F . 395 PAGE MILL R O A D L A B O R A T O R Y I N S T R U M E N T S OF SPEED A N D A C C U R A C Y Standard -hp- instruments shown here are adaptable for making ne

25、arly every electronic measurement in the electronic field. Following is a brief description of a few o f these instru- ments. Complete technical information will be sent- without obligation - on request. In addition, -hp- engineers are at your service to help solve special problems. H-F VACUUM TUBE

26、VOLTMETER -hp- 410A. High Frequency Vacuum Tube Voltmeter combines in one instrument an ac voltmeter covering frequencies from 20 cps to 700 mc. a dc voltmeter with 100 megohms input impedance. and an ohmeter capable of measuring resistances from .2 ohms to 500 megohms. The special probe places a ca

27、pacity of 1.3 uufd acrose the circuit under test. Input resistance for ac measure- ments is 6 megohms. Six voltage ranges provide full- scale sensitivities from I to 300 volts. RESISTANCE-TUNED AUDIO OSCILLATORS -hp- Resistance-Tuned Oscillators are suitable for al- most every type of work. Their lo

28、w distortion makes them particularly valuable in making distortion measure- ments on audio amplifiers. broadcast transmitters and other equipment. They provide an excellent source of voltage for accurate bridge measurements. The output is suffcient to drive signal generators and other equip ment req

29、uiring considerable power, Their wide fre- quency range also makes them suitable for work in the supersonic region. WIDE-BAND AMPLIFIER VACUUM TUBE VOLTMETER -hp- Model 400A Vacuum Tube Voltmeter sets a MW standard of performance for voltage measurements in the audio, supersonic. and lower radio fre

30、quency re- gion. Measurements up to 1 megacycle with this instru- ment are as simple as measurements with the usual multi-range meter at d-c. Nine ranges give full-scale sensitivities from ,030 to 300 volts. Ordinarily no p r e cautions whatsoever are required: turn-over effect and waveform errors a

31、re minimized: there are no adjust- ments to make during operation: a large overload will not damage the instrument. The input impedance is I megohm so that most circuits will not be disturbed when their voltage is measured. -hp- 490A Amplifier is a new, versatile. wide-band amplifier designed for ge

32、neral laboratory or production use. It provides exceptional stability at 40 or 20 db gain. and gives new freedom from spurious responses. ow phase shift is assured by a straight forward. re- resistance-cou led amplifier design, together with inverse feed back. Frequency response is flat within / z d

33、b between IO and 1,000,000 cps. Varying tube voltages or aging tubes have no appreciable effect on the gain or other characteristics. When used in conjunction with -hp- 400A Vacuum Tube Voltmeter. it increases volt- meter sensitivity 100 times. AUDIO SIGNAL GENERATORS -hp- Audio Signal Generators ar

34、e designed for time- saving performance. They are excellent for laboratory applications because they supply a voltage as well as a known frequency at the commonly used impedance levels. They are particularly suitable for gain measurements because no auxiliary a paratus is required. They provide an e

35、xcellent source of voltage for distortion measurements because their waveform distortion is very small. HARMONIC WAVE ANALYZER DISTORTION ANALYZER -hp- Model 300A Harmonic Wave Analyzer is an excel- lent instrument for both laboratory and production work where accurate and rapid measurement of indi-

36、 vidual components of a complex wave is required. The maximum selectivity is sufficient for measurement of harmonics of frequencies as low as 30 cycles and it can be varied over a wide range. With this variable selectivity feature. measurements at higher frequencies can be made more rapidly. yet wit

37、h no sacrifice in accuracy. This Model 330B Distortion Analyzer is -hp-s new- est. finest distortion measuring instrument. It is capa- ble of measuring distortion at any frequency between 20 cps and 20,000 cps. It will make noise measurements of voltages as small as 100 microvolts. A linear r-f dete

38、ctor makes it possible to measure these character- istics directly from a modulated r-f carrier. The hi h sensitivity. ,stable accuracy and compactness of the 330B ma e it extremely valuable for broadcast, labora- tory and production measurements. L A B O R A T O R Y SQUARE WAVE GENERATOR -hp- Model

39、 210 Square Wave Generator provides a new approach to the problem of measuring the characteristics of audio-frequency equipment. One or two observations with this generator will check the frequency response of apparatus where heretofore a large number of observations were necessary. It will show up

40、phase shift and tran- sient effects, both of which are rather difficult to study by other methods. ATTENUATORS AND VOLTAGE DIVIDERS -hp. Model 350 is a bridged-T attenuator consist. ing of one 100 db attenuator with 10 db steps and a 10 db attenuator having I db steps. Spe- cial construction is used

41、 to assure high frequency response. Inquiries pertaining to your particular attenuator or voltage divider problems will be given careful attention. The Model 350A operates on a 500.ohm impedance level while the 350B operates at a 600-ohm impedance level. WIDE - BAND OSCILLATOR -hp- Model 650A Resist

42、ance-tuned Oscillator is the first instrument of its kind that not only covers a frequency range of 10 cps to 10 mc, but brings to the r-f and video fields all the speed, ease and accuracy traditional in -hp. audio oscillators, This highly-stable, precision instru- ment provides output flat within +

43、 I db from 10 cps to 10 mc, and a voltage range of .00003 to 3 volts. Output impedance is 600 ohms, or 6 ohms with 100 to I output voltage divider. ln- strument includes built-in vacuum tube voltmeter and 50 db output attenuator. I N S T R U M E N T S O F S P E E D A N D A C C U R A C Y SECONDARY FR

44、EQUENCY STANDARD -hp- Model 100 Low Frequency Standard provides a convenient and extremely useful source of four standard frequencies ( I 00 cps, I kc, I O kc, 100 kc) for accurate measurement purposes, for calibrat- ing audio equipment and for various other work where great accuracy is required. It

45、 is useful in making accurate interpolation measurements at higher frequencies. ELECTRONIC FREQUENCY METER .hp. Model 500A Frequency Meter is designed to measure the frequency of an alternating voltage from 5 cps to 50 kc. It can be used to measure difference between two h-f signals. It is particu-

46、larly suited to crystal grinding work where it can be used to measure the frequency deviation from the standard, quickly and accurately. PRECISION OSCILLATORS -hp- Model 201B and -hp- Model 2001 are precision measuring instruments of utmost accuracy and latest design. The 201B spans a range from 20

47、cps to 20 kc in three bands: the 2001, a spread- scale oscillator, covers frequencies from 6 to 6000 cps in six bands. Both include a 6 main frequency tuning dial calibrated over 300 de- grees, controlled directly or by 6- l micro-drive. Both meet all requirements for measurement speed, accuracy, an

48、d purity of wave form. And both instruments incorporate -hp- family charac- teristics of no zero set, constant output, and great stability. laboratory F O R SPEED instruments AND ACCURACY HEWLETT-PACKARD COMPANY 1 3 2 0 A PAGE MILL R O A D P A L 0 ALTO, CALIFORNIA UHF SIGNAL GENERATOR -hp- Model 616A UHF Signal Generator is the first instrument developed commercially which combines great operational speed, accuracy and ease of operation with a frequency range of I800 mc to 4000 mc. R-f power is generated by a re- flex klystron oscillator, and voltage adjustments during operation are