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Free download.Book file PDF easily for everyone and every device.You can download and read online Precision Apparatus Co Servicing by Signal Substitution w. E-200 Signal Generator file PDF Book only if you are registered here.And also you can download or read online all Book PDF file that related with Precision Apparatus Co Servicing by Signal Substitution w.

E-200 Signal Generator book.Happy reading Precision Apparatus Co Servicing by Signal Substitution w. E-200 Signal Generator Bookeveryone.Download file Free Book PDF Precision Apparatus Co Servicing by Signal Substitution w. E-200 Signal Generator at Complete PDF Library.This Book have some digital formats such us:paperbook, ebook, kindle, epub, fb2 and another formats.Here is The CompletePDF Book Library.It's free to register here to get Book file PDF Precision Apparatus Co Servicing by Signal Substitution w. E-200 Signal Generator Pocket Guide.Posted: Aug Wed 21, am. I did a little research into the history of Precision??? The E Precision??? It was first mentioned in???

An ad in the September issue featured a photo of the E in the lower left. Oscilloscope - WikipediaThe November issue of??? Test Equipment??? The E had a frequency range from kilocycles to The E featured what Precision termed their??? The coils, trimmers, all the resistors, etc. The E Precision introduced their new line of test equipment in an ad in the June issue of???

They first mentioned the E in an ad in the October issue of??? The E increased the frequency range over the E, from kilocycles up to 72 megacycles.

It was also advertised as Quote. Substitution System??? A 6SJ7 see schematics in the Precision-developed???All components including coils, trimmers, condensers, socket, tube, resistors, etc. High quality, ceramic spaced band switch, silver plated switch contacts, ceramic suspended trimmers, plus low drift, silver-mica high frequency loading condensers, in addition to the rugged??? This permits use of Series EC for complete F. Thanks for pulling all this together, Steve. It makes for an interesting read.

However, when desired, a frequency modulated signal for oscillographic methods of alignment is readily ob- tained through the use of Series E C or equal Sweep Signal Generator. By connecting the coaxial output cable of the Series EC to the marker input termin- als of the Sweep Signal Generator, EC thereby becomes a variable frequency marker signal generator.Fulfilling this requirement, Series EC readily provides up-to-the-minute application as an A. In addition, Series EC is a very convenient source of variable marker signals when aligning T. It furthermore permits rapid, accurate, overall band width checkup via the moving marker method. Incidentally a frequency modulated signal generator is best employed only when a high sensitivity labora- tory type cathode-ray oscillograph is also on hand, such as SERIES ESB. Fused Line Circuit.A special front panel fuse post provides full protec- tection against the accidental use of improper voltage sources and further protects the instrument against prolonged high voltage surges.

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This instrument employs one each of the following: 6AU6 — Electron coupled R. The foregoing, in conjunction with the schematic should give the reader a well-rounded idea of the ex- ceptionally well planned background and design of the Series EC service-laboratory Signal-Marking Gen- erator.Before using the Signal Generator, it is advisable to allow the instrument to 'warm up' for a period of at least 10 minutes. In this manner, all vital components are given a chance to come to normal operating temperature, insur- ing the utmost accuracy and stability of the output fre- quency. A rotary type A.

Line Switch is on the 'A. Control' located at the center right-hand side of the in- strument panel. A 30 degree rotation turns power 'on' and leaves the 'A. Control' ready for use, in zero volts position.After the pre-heat period has elapsed, the instrument is ready for operation. Procedure at the receiver end should be in accord with manufacturers' alignment instructions found in service manuals and service notes.Generalized alignment procedures will be found further on in this in- struction book and serves only as a guide in the event of absence of exact adjustment notations.

Sub- stitution is optional with the operator and when not em- ployed, the setting of the 'A. Control' in no way affects the operation of the instrument or the alignment pro- cedure. The proper use of A. Substitution is described under the generalized receiver adjustment instructions. Determine whether a Dummy Antenna is required for the operations about to be performed.In general, it is good practice to use a Dummy Antenna whenever the Signal Generator Output Cable is to be connected directly across an inductance such as the primary winding of the antenna coil. Theory of OperationIn such case the Universal I.

Necessary components can be purchased from the usual well-stocked distributors of radio parts. The identification of these leads is as follows: Black — Ground Red — Output direct from live center terminal of coaxial cable output connectors. A Dummy Antenna, when required, is connected in series with the red lead and may consist of an inductance, capac- itance, resistance, or combination, as may be called for. Attenuation network.

A capacity of. Smaller values of capacity may be used according to the demands of circuit loading conditions. The most practical means of doing this is to ground the Signal Generator to the receiver chas- sis and then connect the receiver chassis itself to a good ground.The cold water pipe is generally sufficient. Caution: In the case of 'AC-DC' receivers, wherein one side of the line may be tied directly to the receiver chassis, it is necessary to use a blocking condenser in series with the lead between re- ceiver and ground, or else a short circuit will occur in one position of the receiver line cord plug.

This condenser should be approximately. Next rotate the 'Band Selector', located at the lower left hand corner of the panel, to the frequency range de- sired and rotate the 'Tuning Knob', until the red hair-line pointer is at the required frequency on the band selected.For special reference purposes, there will be found on page 18 of this book an outline on how to use the numerical reference scale and vernier. After having made the proper 'Band Switch' and 'Dial' settings for the frequency desired, set the 'Audio Signal' switch located at the lower right hand corner of the panel to either the 'Unmodulated R. The generalized alignment procedure given further on in this book details placement of visual resonance aids. See page 20 of this book. The reason for this is that in this manner, the automatic volume control system, if any, will not function, and we thereby avoid the undesirable leveling action of auto- matic volume control.For those not fully familiar with this action of A. E2502A 8791 Model 100 Precision Signal Generator SoftwareIn brief, the greater the input signal strength to the antenna post, the greater the A.

In the other direction, a reduction in antenna signal carries with it the development of smaller A. Hence, unless the test signal is kept below the point at which A. Of course, there are methods of aligning a receiver with automatic volume control working, but the resonance indicators, in such cases, cannot be just a simple output meter, but must be associated in some way or other with the tuned circuits or A. Let us now continue with the alignment procedure from the point where we briefly departed. Nanosystems Design and Technology;. Top Selected Products and Reviews;.

The Official Patients Sourcebook on Brainerd Diarrhea: A Revised and Updated Directory for the Internet Age. The Neti Pot for Better Health?. A 150 MHz RF Signal Generator for Your Test Bench?The system for controlling the magnitude of the R. Control-1', which feeds the vernier smooth output 'R.

This latter potentiometer directly con- trols the R. In general, the 'low' output terminal will suffice unless the receiver is badly misaligned, or the test requires unusually high output; at such time the 'high' output terminal is employed. The screw-cap allows shielding of the unused terminal to mini- mize leakage possibilities from this source. The setting of 'R.

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Control-1' determines the maximum voltage available with 'R. Control-2' turned fully on. This latter control is self-calibrating for comparative gain measurements, and allows division of whatever maximum voltage is made available from 'R. Control-1', into parts proportional to the numerical setting chosen.

For example, with 'R. Control-2' at No. With the foregoing in mind, set 'R.Control-1' about mid-way between the zero and No.

Control-2' until an appreciable indication appears oh the resonance indicator or output meter. If insufficient or no indication appears, bring 'R. Control-2' back to its zero position and advance 'R.

Control-1' a bit further in other words, increasing the maximum available signal.Now again rotate 'R. Control-2' to the right, watching the resonance indicator for deflection. If still little or no indication is obtained, return 'R.

Control-2' back to its zero position, further increase setting of 'R. Control-1', and repeat the previous process until adequate deflection of resonance or output indicator is obtained.

When a discernible output indication is finally obtained, then proceed to make the necessary capacitative or inductive adjustments to the circuit under alignment.As the output indication increases with alignment, reduce the R. In addition this latter measure will insure operation below the A. The circuit is at resonance when ad- justed to give peak indication on the indicating device em- ployed. We then proceed with alignment of the next stage, in accord with the preceding paragraphs, making new fre- quency settings when necessary, and circuit adjustments in accordance with the set manufacturers' service notes. In passing, it may be well to restate, at this time, that it is not always necessary to use a modulated R.

As an example, one may use an unmodu- lated signal and obtain resonance indications from the A.These and other methods are covered in the section dealing specifically with resonance indicators, page 8. The two pin jacks located in the 'Audio Signal' selector box, at the lower right hand corner of the panel, provide the external audio test signal. Audio test connections should be made in accordance with the pin jack markings.The 'high' pin jack is for connection to the amplifier tube grid or the high side of an amplifier's input terminals and of course, the 'gnd' pin jack to the amplifier's low or ground side. Before aligning a radio receiver, it is always good practice to test the audio section first, by applying a stage-by-stage signal. In this manner one may readily locate the cause of non-functioning in a receiver as being due solely to circuit troubles in the audio section.Note: When it is desired to feed the Audio Test Signal into a low impedance circuit, such as a 15, 50, or ohm, etc. In such instances, an appropriate impedance matching transformer or resistive pad should be employed to transform the high impedance audio 'T' output to the desired low impedance.

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