How To Use This Manual - evertz 8084 Instruction Manual

1.4

HOW TO USE THIS MANUAL

Items of special note are indicated with a double box like this.
OVERVIEW
Models 8084/8084AD/8085 Closed Caption Encoder Manual
The Caption Encoders will automatically switch their local time to Daylight
Saving time at 2 a.m. local time on the first Sunday of April, and back to
standard time at 2 a.m. local time on the last Sunday of October. The DST
Observed control allows the user to enable or disable the DST adjustment
of the local encoder time (the DSO flag). For regions that observe Daylight
saving time, the DST Observed setting must be set to On, and for regions
that do not observe Daylight saving time, the DST Observed setting must
be set to Off. Regardless of whether DST is observed in a region, DST will
be In effect between the first Sunday of April and the last Sunday of
October. (The DST flag) The front panel time display shows the status of
the DST and DSO flags as shown in Figure 3-7.
There are two XDS packets defined by EIA-608-B for encoding time and
date information. The Time of Day packet (0701) encodes the UTC time
and contains a flag bit (DST Flag) that is to be set when Daylight Saving
Time is in effect (i.e. between the first Sunday of April and the Last Sunday
of October). The Time of Day packet must be inserted locally at each
affiliate station so that the correct time is encoded when programs are aired
at different times across the network.
The Time Zone packet (0704) encodes the time zone offset from UTC time
and contains a flag bit (DSO Flag) that is to be set when the entire area
served by the signal observes Daylight Saving Time. When the DSO Flag
bit is set to Off, it means that the VCR will ignore the DST Flag bit in the
Time of Day packet. The Time Zone packet must be inserted locally at
each affiliate in order to encode the correct time zone offset for the region.
See application note AN3 at the back of this manual for more information
about encoding time in XDS packets.
This manual is organized into 6 chapters: Overview, Installation, Operation,
Serial Command Protocol, Technical Description, and Troubleshooting.
There are also two application notes in the rear of the manual.
If you are confused by any terminology used throughout the manual,
please refer to the Glossary of Terms in Chapter 1.
Some features described in the manual are specific to either the
8084,8084AD or 8085. Generally the text will identify which features are
applicable.
Revision 1.6.6
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