The value of Modality (0008,0060) shall be ECG.
The number of Waveform Sequence (5400,0100) Items shall be between 1 and 4, inclusive.
The value of the Number of Waveform Channels (003A,0005) in each Waveform Sequence Item shall be between 1 and 24, inclusive.
The value of the Sampling Frequency (003A,001A) in each Waveform Sequence Item shall be between 200 and 1000, inclusive.
The Defined Context ID for the Channel Source Sequence (003A,0208) in each Channel Definition Sequence Item shall be CID 3001.
Note: Terms from other Context Groups may also be used for extended specification of the Channel Source, as declared in the Conformance Statement for an application (see PS3.2).
The value of the Waveform Sample Interpretation (5400,1006) in each Waveform Sequence Item shall be SS.
The Defined Context ID for the Concept Name Code Sequence (0040,A043) in the Waveform Annotation Sequence (0040,B020) shall be CID 3335. This Context Group supports the annotation of suppressed pacemaker spikes in the ECG waveform.