CDM-750 Advanced High-Speed Trunking Modem
Revision 2
Appendix C
MN-CDM750
C–14
C.5
Configuring ACM in the CDM-750
ACM
operation
is
a
FAST
option
that
must
first
be
ordered,
and
then
activated
in
the
CDM
‐
750
High
Speed
Trunking
Modem.
If
this
option
is
not
enabled
in
the
modem,
contact
your
Comtech
EF
Data
Sales
Representative
to
upgrade
the
modem
to
support
the
desired
level
of
ACM
operation.
With
ACM
operation
enabled,
Tx
and
Rx
Symbol
Rates
can
be
set
to
any
rate
desired
up
to
the
maximum
purchased
symbol
rate
in
1
sps
steps:
•
Symbol
rate
options
are:
5
Msps
(standard),
18,
36,
54,
and
63
Msps;
•
QPSK
and
8PSK
operate
to
63
Msps;
•
16APSK
to
47
Msps;
•
32APSK
to
38
Msps.
Additionally,
the
following
modulation
types
are
available:
•
QPSK
/
8PSK
(standard);
•
QPSK
/
8PSK
/16APSK
(FAST
‐
enabled
option);
•
QPSK
/
8PSK
/16APSK
32APSK
(FAST
‐
enabled
option).
shows
the
maximum
satellite
data
rate
capacity
for
the
symbol
rate
option
when
used
in
ACM
mode.
Actual
user
data
rate
throughput
will
be
at
least
99%
of
the
maximum
satellite
data
rate
capacity
when
running
in
GSE
Ethernet
encapsulated
mode.
ACM
mode
is
only
suggested
to
run
in
Normal
(64,800
bit)
frames
with
pilots
ON.
Summary of Contents for CDM-750
Page 76: ...CDM 750 Advanced High Speed Trunking Modem Revision 2 Updating Firmware MN CDM750 4 12 Notes...
Page 224: ...CDM 750 Advanced High Speed Trunking Modem Revision 2 Appendix A MN CDM750 A 4 Notes...
Page 234: ...CDM 750 Advanced High Speed Trunking Modem Revision 2 Appendix B MN CDM750 B 10 Notes...
Page 256: ...CDM 750 Advanced High Speed Trunking Modem Revision 2 Appendix C MN CDM750 C 22 Notes...
Page 280: ...CDM 750 Advanced High Speed Trunking Modem Revision 2 Appendix D MN CDM750 D 24 Notes...
Page 300: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX...
