Spectra Precision ProMark 800 Reference Manual - Manual (Page 241)

229
Set Command Library
• The command will be NAKed if the receiver has not been
told on which port the radio is connected. Use command
$PASHS,RDP,TYP to declare the port used.
• If a PDL radio is used, depending on its channel spacing,
the air link speed you select may force the use of a
particular type of modulation and protocol, as well as a
particular FEC setting. The different possible
combinations are summarized in the table below.
Conversely, the choice of a protocol or modulation may
force the use of a particular air link speed.
• If an ADL radio is used, depending on its channel spacing,
the air link speed you select may force the use of a
particular type of modulation and protocol, as well as a
Channel
Spacing
is:
You
set c6
to:
Then
modulation
can only be:
Protocol can
only be:
FEC Setting
12.5 kHz 4800 GMSK
The 3 proto-
cols are pos-
sible.
May be set to ON for
Transparent protocol
(FEC1).
Forced to OFF for the
other two protocols.
12.5 kHz 8000 Command NAKed
12.5 kHz 9600 4FSK Transparent May be set to ON (FEC1)
25 kHz 4800 GMSK
TRIMTALK or
DSNP
Forced to OFF
25 kHz 8000 Command NAKed
25 kHz 9600 GMSK
TRIMTALK or
Transparent
Forced to OFF for TRIM-
TALK.
May be set to ON for
Transparent protocol
(FEC1).
25 kHz 16000 Command NAKed
25 kHz 19200 4FSK Transparent May be set to ON (FEC1)