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6287 ULTRA Users ManualPage 5-8
29 Reserved
This option is reserved.
30 Pseudo Transparency Mode (PTM) Selection
Determines which of two methods will be used to begin pseudo
transparency mode: (A) Trigger 1 + Trigger 2 or (B) Trigger 1 + Count
Byte. The default value is (A). Refer to Section 11 Transparency Modes
for more information.
31 Discard PTM Terminating Delimiter
Determines whether or not the ULTRA, when Option #30 is set to
(A)Trigger 1 + Trigger 2 PTM, will discard the character that terminates
PTM (i.e., the first hexadecimal character that is outside the range of 0-9 or
A-F). The default value is No. Refer to Section 11 Transparency
Modes for more information.
32 DSC Trigger 1
Determines which DSC character will be used (in conjunction with either
Trigger 2 or a Count Byte, depending upon the setting of Option #30) to
signal the start of PTM. The user may enter any two-character hexadecimal
value that will not otherwise be found in the data stream. The default value
is a DSC cent sign (¢) 1Bh. Refer to Section 11 Transparency Modes for
more information. This character is also used as a trigger for configuring
the ULTRA, invoking PFSs and programming PFSs from the coax host.
Note: The Trigger 1 character should be reserved for this use only. Any
other use of the Trigger 1 character may produce unpredictable results.
33 DSC Trigger 2
Determines which DSC character must follow Trigger 1 in order to start
PTM when Option #30 is set to (A). The user may enter any two-character
hexadecimal value, except for 18h (?), 2Eh (%), 19h (!) and 30h (&), which
are used by the ULTRA for other purposes. The default value is a DSC
dollar sign ($) 1Ah. Refer to Section 11 Transparency Modes for more
information.