Tektronix WFM2200A, Руководство пользователя

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The decoded ancillary data includes the following:
■ DID - Data Identifier of the requested packet; permissible values range from
1 to 0xFF (255) inclusive.
■ Type - Type of the ANC Data packet. For ARIB B.35, this is always a Type
2 packet (DID less than 0x80), as defined by SMPTE 291M. The actual value
(with parity bits added) is displayed in parentheses.
■ SDID - Secondary Data Identifier of the requested packet; permissible values
range from 0 through 0xFF (255) inclusive. This field only appears when a
Type 2 packet is selected (see above). The actual value (with parity bits
added) is displayed in parentheses.
■ DC - Data Count word of the acquired packet. The number of User Data
words is displayed in decimal. The actual value (with parity bits added) is
displayed in parenthesis, in hexadecimal.
■ Field - The field of the video from which the packet was acquired. Displays
1 for progressive formats.
■ Line - The line of the video (within the field) from which the packet was
acquired.
■ Stream - For HD (SMPTE 292M), indicates whether the ancillary packet was
acquired from the Y or C data streams. Displays N/A for SD.
■ Status - Indicates whether packet(s) of the desired type are present in the
video; also indicates Checksum or CRC errors.
■ Checksum - Indicates the checksum word that was recovered from the
acquired packet.
■ Should be - Indicates the checksum word computed by the instrument, based
on the packet data.
■ Format - Indicates the name of the ancillary data type or standard.
■ User Data Words - Contains the payload of the ancillary packet, displayed in
hexadecimal. Displays all 10 bits.
ARIB content displays
214 WFM2300 and WFM2200A Waveform Monitors User Manual