BK Precision 4011A Betriebsanleitung PDF herunterladen (Seite 8)

2010viii

Preparing the Laboratory Notebook

Laboratory-oriented engineering work, particularly research work, provides information that is

usually quite detailed. Records of this work and the results specified are kept in laboratory note-

books. Laboratory notebooks must be complete and clear, since data recorded may provide a ba-

sis for calculations, conclusions, recommendations, engineering designs, patents, etc. These

notebooks are given to the engineer to generate various types of reports, sometimes after long

periods of time. They may be used by others to verify the work, or as a base for additional work.

They also may serve as evidence in lawsuits over patents. While the format of the notebook is an

individual matter, certain standards must be maintained to ensure accuracy and readability.

The requirements and procedures necessary to produce a good laboratory notebook are given in

the following paragraphs. The lead page or pages of the laboratory notebook should contain gen-

eral information, such as title, purpose, and laboratory location. The information recorded in the

laboratory notebook should be sufficiently detailed to permit the work to be duplicated at a later

date by the writer or by other knowledgeable engineers. It should include all data observed and

the pertinent conditions that existed, such as instruments used, parameter settings, and so on.

Entries in the notebook should be in chronological order and should be in ink. Any erroneous or

incorrect entries should not be erased, but should be lined through. Pages should be numbered

consecutively, with no pages removed or torn out. No blank pages should be left. Any pages or

partial pages left blank should be lined through. Each entry should be dated and signed and, if

appropriate, witnessed. Dating, signing, and witnessing are especially important when pursuing

or protecting patents.

Types of entries in a laboratory notebook include concise written explanations of procedures,

equations used, freehand sketches and diagrams, tables, curves, charts, photographs, lists of ap-

paratus, and references to items such as blueprints that are large or bulky to include.

The laboratory notebook normally should not contain lengthy presentation theory or reference

material, or extended discussions of ordinary or routine results. Written explanations should be

sufficiently detailed to permit the writer to understand what was done even after several years

have elapsed, but should not be burdened by trivial details.

Any equation used in the work should be given in the notebook, along with source of the equa-

tion, if it is not a standard, well-known one.

Freehand sketches should be used liberally to illustrate laboratory experiments. These sketches

should be neat. Straightedge and compass or suitable drawing templates should be used to obtain,

as a minimum, straight lines and round circles. Using templates for sketching standard devices

such as resistors, inductors, and capacitors also improves the appearance of the notebook. The

engineer doing the recording must decide on the trade-off between the time required and the ap-

pearance and readability the notebook.

Tables should be used to list observed data as well as data calculated during laboratory work.

These tables should be titled with the conditions that existed or parameters that were set. Head-

ings for columns and rows should be given with the units used in the measurement or calcula-

tions. It is frequently desirable to separate observed data and calculated data in tables by use of a

double rather than a single line. Where calculated data is tabulated, the table should be followed

by representative sample calculations.

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 72 73

Kommentare zu diesen Handbüchern

Keine Kommentare

BK Precision 4011A Betriebsanleitung Seite 8

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Stromgeneratoren BK Precision 4011A