38 CCDI TM8100/TM8200 Computer-Controlled Data Interface (CCDI) Protocol Manual
© Tait Electronics Limited April 2007
1.9.9 TRANSPARENT (FFSK and THSD)
The TRANSPARENT command changes the radio to Transparent mode
and sends the escape character required to change it back to Command
mode. Refer to “CCDI Transparent Mode” on page 16 for details about
Transp arent m ode.
Format t [SIZE] [ESC_CHAR] [MODE] [CHECKSUM]
■ ‘t’ is sent as a single ASCII character and represents the
TRANSPARENT command.
■ [ESC_CHAR] is a single ASCII character representing the escape
character. The escape sequence is three consecutive escape characters
sent within two seconds, with two seconds of idle time each side. When
the escape sequence is sent to the radio, it is forced into Command mode.
See “Entering Transparent Mode” on page 16 for details.
■ [MODE] is a single ASCII character representing the modulation
scheme. If [MODE] is left blank then the modulation scheme is assumed
to be FFSK.
Note When data is transmitted in Transparent mode it has the Lead-In
Delay set in the Data form of the programming application.
Examples t01zB1 a command requesting that the radio be put into Transparent
mode. The escape character specified here is “z”
(ASCII code = $7A).
t02z080 enter FFSK transparent mode, with the escape character set to
‘z’.
t02yH69 enter THSD transparent mode, with the escape character set to
‘y’.
[MODE] Function
0
(FFSK mode)
The radio will use FFSK modulation when in transparent mode.
H
(THSD mode)
The radio will use Tait High Speed Data (THSD) modulation
when in transparent mode.
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