IEC/TS 62644:2012(E) specifies the relationship between the reference signal and Ancillary Time Code (ATC) for use in professional storage equipment operating at 50 frames-per-second or 59,94 frames-per-second and handling progressive video signal under the system operation to maintain the frame pair which is composed of two frames.
Tämän julkaisun valmistelusta Suomessa vastaa SFS Suomen Standardit, puh. 09 149 9331.
Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Definitions
4 Principle
5 Reagents and materials
6 Apparatus
6.7 Ignition circuit.
7 Sampling
8 Preparation of test sample and test portion
8.1 Air-dry samples
8.2 Liquid samples
8.3 Samples of fresh materials
9 Procedure
9.1 Determination of effective heat capacity of the calorimeter
9.2 Determination of moisture content
9.3 Preparation of the bomb
9.4 Preparation of the calorimeter vessel
9.5 Procedure specific for an adiabatic calorimeter
9.6 Procedure specific for isothermal and static calorimeters
9.7 Assesment of the bomb contents
9.8 Determination of acidity
10 Corrections
10.1 General
10.2 Thermometer corrections
10.3 Cooling correction
10.4 Correction for heat of ignition
10.5 Correction for heat of formation of acids
10.6 Correction for incomplete combustion
10.7 Correction for polyethylene bag (if used)
11 Expression of results
12 Precision
12.1 Interlaboratory tests
12.2 Repeatability
12.3 Reproducibility
13 Test report
Annex A Determination of the effective heat capacity of the calorimeter (normative)
Annex B Special procedures for preparation of the test sample (normative)
Annex C Method of checking that the average deviation of the rate of change of temperature is within the specified limit (informative)
Annex D Examples of calculating the results of calorific determinations (informative)
Annex E Results of interlaboratory tests (informative)
ISO 1770:1981 Solid-stem general purpose thermometers
ISO 1771:1981 Enclosed-scale general purpose thermometers
ISO 1928:1995 Solid mineral fuels -- Determination of gross calorific value by the bomb calorimetric method, and calculation of net calorific value
ISO 1770:1981 Solid-stem general purpose thermometers
ISO 1771:1981 Enclosed-scale general purpose thermometers
ISO 1928:1995 Solid mineral fuels -- Determination of gross calorific value by the bomb calorimetric method, and calculation of net calorific value
ISO 3696:1987 Water for analytical laboratory use -- Specification and test methods
ISO 6496:1999 Animal feeding stuffs -- Determination of moisture and other volatile matter content
ISO 6498:1998 Animal feeding stuffs -- Preparation of test samples
ISO 651:1975 Solid-stem calorimeter thermometers
ISO 652:1975 Enclosed-scale calorimeter thermometers