Model 8084, 8084AD and 8085 Closed Caption Encoders
Manual Change Sheet 1.3-1
Date of Issue: July 26, 2002
Page 5 of 6
Copyright Evertz Microsystems Ltd. All rights reserved
4.3. Notes about Sony VCRs
•
When they are in the AUTO CLOCK mode, they search for incoming signals with XDS time of day
and time zone packets when they are first plugged in. They only update from the XDS packets at
the beginning of the minute. The VCR can also lock onto the time by simply powering the unit on
and then off. When this happens, the time will only get updated at the beginning of a minute.
•
The
Time Zone
packets MUST be present for the AUTO CLOCK feature in these VCRs to work. In
areas that do not encode
Time Zone
packets, in accordance with EIA-608-B rules, the AUTO
CLOCK function in these VCRs will not work.
•
If the VCR is receiving
Time of
Day and Time
Zone
packets, its clock will be updated depending on
its timezone and DST settings. If the timezone is set manually in the VCR, the clock will be updated
with the VCR timezone setting rather than pulling it off the 8084 packets.
•
VCR does not look for the DSO flag in the
Time Zone
packet. The VCR can be set for DST
On/Off/Auto. When it is set to Auto the VCR follows the DST flag bit in the
Time of Day
packet as
long as both packets are present. In regions that do not observe DST the VCR must be set to DST
Off.
•
VCR will not automatically do rollovers for Daylight Saving Time if
Time of Day
and
Time Zone
packets are not present. The VCR needs to be turned off and then on to adjust to the correct time
again.
5.
XDS CONTENT ADVISORY PACKET ENCODING
The encoding of the XDS
Content Advisory
packet (0105) has been enhanced to guarantee that this
high priority packet will be inserted even when the upstream bandwidth has been all used up.
According to section E.7.3 of EIA-608B, the
Content Advisory
packet must take the priority over other
packets and must be repeated at intervals no greater than every 3 seconds. The algorithm for encoding
these packets will remove redundant upstream packets when necessary to make room for the
Content
Advisory
packets. Previous versions of firmware would only insert packets when there was available
space in the upstream packets.
6.
TIME ZONE PACKET ENCODING/DECODING BUG FIXED
Under certain conditions when the time zone was set to 06 (US Central Time) the 8084 would not
decode upstream
Time zone
packets (0704) correctly. This problem has now been fixed. Previous
versions of firmware would display the message
Nonsense CC F2
on the front panel when it
encountered these packets.
7.
METACAST2 SYNCINC BUG FIXED
As of Firmware revision R020726 the 8084 will return the month of July as the string “JUL” to satisfy the
requirements of MetaCast2. Previous versions returned the month as “JLY” which caused MetaCast to
return the error
MetaCast failed to synchronize to the encoder
.
