Sampling Theorem

Assume the case where AC signals up to maximum frequency fMAX are A/D converted as input signals and then D/A converted. To faithfully reproduce original signals, it is necessary to conduct the sampling at sampling frequency fS which is at least 2fMAX or more. This is called the sampling theorem.

Scale

Contamination adhered to internal wall of pipes, and usually it indicates piles of minute solid particles, CaCO2, or MgCO2.

Sequential Conversion Method

This is a widely used A/D conversion method because of its relatively fast speed and high accuracy. Voltage equivalent to 1 LSB is added to the voltage to be compared one by one (65,536 times with 16-bit resolution). The instrument determines the corresponding voltage and converts the input voltage to it. This method is generally used in high-speed digital recorders.

Source Marking

Source marking is used for product contents which do not require change by product or production lots, such as manufacturer names, product names, or bar codes read at check-out counters in convenience stores. Most of these product contents are printed on containers before production because they do not need to change.

Span adjustment (range)

Span adjustment changes the ratio of the output voltage (displacement) to the distance. As shown, the actual voltage-distance relationship (shown as a solid line) can be shifted to either a higher output voltage at the same distance (A) or a lower output voltage at the same distance (B). Span adjustment is used to adjust the level of the output voltage if the above-mentioned ratio is not 1:1 due to a change in target color or material. The span adjustment range is the ratio of the measurement indication to the original output voltage.

Standard Distribution Code

Standard Distribution Code (JIS-X-0502) is a barcode mainly marked on corrugated cardboard cartons. It is standardized by JIS as a code used for logistics management.

Standard target

A target determined as standard according to shape, size, and material, that is used to obtain the specifications of a sensor.

Start/Stop character

A pattern of bars and spaces that provides the scanner with start and stop reading instructions. "*" is specified for CODE39. "A", "B", "C" and "D" exists for CODABAR but not for UPC/EAN and ITF.

Starting Time

Period between the time when the input is applied and when the output voltage reaches 90%.

Static

Static is certainly also a form of electricity, although one which can only subject you to negligible currents; far too small to operate an air-conditioner or refrigerator for example.

Static Coulomb Force

The coulomb force is the force working between objects that assume static, like the north and south poles of a magnet; repelling objects with the same polarity and attracting those of different polarities. Coulomb force always works on objects that are charged with static and this causes many problems.

Static elimination time

The static elimination time is the time required when the electrical charge of a plate monitor (metallic plate) of 150 x 150 mm 5.91" x 5.91" is eliminated from +1000 V to +100 V (in the case of SJ-F). It is typically used as a standard of static elimination ability in conformance with EOS/ESD.