Tektronix WFM7020 User Manual

Using the ARIB Di
splays
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 TR-B.23-1, this is always a Type 2 packet ( DID less than 0x80), as
defined by SMPT
E 291M. The actual value (with parity bits added) is displayed in parentheses.
SDID - Seconda
ry 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 parit
y bits added) is displayed in parenthesis, in hexadecimal.
Field - The fi
eld of the video from which the packet was acquired. For progressive formats, 1 is displayed.
Line - The li
ne of the video (within the field) from which the packet was acquired.
Stream - Fo
r HD (SMPTE 292M), indicates whether the ancillary packet was acquired from the Y or C data s treams.
For SD, N/A is displayed.
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 work computed by the instrument, based on the packet’s 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. All 10 bits are displayed.
Waveform Monitors Quick Start User Manual 83

Tektronix WFM7020 Specifications

General

Brand	Tektronix
Model	WFM7020
Category	Monitor
Language	English