Link electronics Caption Encoder/Decoder SD SDI/Analog PTC-892, Инструкция по эксплуатации

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PTC-892 version 1 C 30
PTC-892 SOFTWARE INSTRUCTION SET
Version 1 A
The PTC-892 can execute instructions received via computer link. These
instructions are referred to as “Encoder Directives” in order to distinguish them from
standard Closed Caption “command codes”. They enable a computer operator to
control the operation of the encoder. Each Encoder Directive is listed below along with
its hexadecimal equivalent and a brief description of its function.
Encode modes
ENCODER
DIRECTIVE HEX FUNCTION
^A0 01 30
Software bypass on: This mode only allows weather lift and
XDS to be encoded all other information passes untouched.
Front panel display will show “SOFTWARE BYPASS”, and
bypass switch will be lit. To return from software bypass
mode, use the “Software bypass off” directive (^AS), use the
front panel bypass switch, or select another encode mode.
^A1 01 31
Field 1 Insert, Field 2 Opaque: This mode allows encoding
on Field 1 while all information on Field 2 will be removed.
This mode should not be used if useful information is known
or suspected to be present at anytime on Field 2.
^A2 01 32
Field 1 Opaque, Field 2 Insert: This mode allows encoding
on Field 2 while all information on Field 1 will be removed.
This mode should not be used if useful information is known
or suspected to be present at anytime on Field 1.
^A3 01 33
Field 1 Insert, Field 2 Transparent: This mode allows
encoding on Field 1 while information already on Field 2 to
pass un-touched.
^A4 01 34
Field 1 Monitor, Field 2 Insert: This mode allows encoding
on Field 2 while information already on Field 1 to be re-
encoded. If no information is on Field 1, the PTC-892 inserts
run-in clock and null bytes.
^A5 01 35
Field 1 Transparent, Field 2 Insert: This mode allows
encoding on Field 2 while information already on Field 1 to
pass un-touched.
^A6 01 36
Field 1 Insert, Field 2 Monitor: This mode allows encoding
on Field 1 while information already on Field 2 to be re-
encoded. If no information is on Field 2, the PTC-892 inserts
run-in clock and null bytes