CDM-750 Advanced High-Speed Trunking Modem
Revision 2
Front Panel Operation
MN-CDM750
5–33
5.2.2.6 CONFIG: CnC
Appendix
D.
D
OUBLE
T
ALK
C
ARRIER
‐
IN
‐
C
ARRIER
OPTION
Carrier-in-Carrier: Mode
Search-Delay (
)
Use
the
W
X
arrow
keys
to
select
Mode
or
Search
‐
Delay
,
and
then
press
ENTER
.
5.2.2.6.1 (CONFIG) Carrier-in-Carrier: Mode
CnC
operation
requires
installation
of
the
DoubleTalk
Carrier
‐
in
‐
Carrier
module.
In
addition
to
installing
the
CnC
module,
the
user
needs
to
purchase
one
of
several
available
FAST
options
to
provide
capability
to
a
maximum
of
155
Mbps.
Appendix
A.
FAST
OPTIONS
AND
ACTIVATION
PROCEDURE
CnC Mode: Off (Off,On)
(
v
)
Use
the
ST
arrow
keys
to
select
Off
or
On
,
and
then
press
ENTER.
With
no
module
installed,
CnC
Mode
is
forced
Off
and
this
submenu
is
inoperable.
5.2.2.6.2 (CONFIG) Carrier-in-Carrier: Search-Delay
CnC Search Delay: (range 0-300ms)
Min: 010 ms Max: 290 ms
(
34v
)
To
reduce
the
time
taken
for
the
CnC
algorithm
to
converge,
you
can
restrict
the
range
of
delay
the
search
uses.
Factory
default
values
for
satellite
operation
are
set
to
a
minimum
of
230
ms
and
a
maximum
of
290
ms.
Once
CnC
has
found
the
exact
delay
the
value
can
be
further
reduced,
but
care
should
be
taken
to
allow
sufficient
range
to
accommodate
changes
in
path
delay
due
to
Doppler.
If
CnC
is
being
bench
‐
tested
with
two
units
in
a
back
‐
to
‐
back
configuration,
the
minimum
delay
should
be
set
to
0
ms,
and
the
maximum
to
20
ms.
This
takes
into
account
the
lack
of
satellite
delay.
To
edit
the
CnC
Search
Delay:
Use
the
W
X
arrow
keys
to
select
the
Min
or
Max
delay
digit
to
edit
using
the
arrow
keys,
and
then
edit
the
value
of
each
digit
by
using
the
ST
arrow
keys.
Press
ENTER
when
done.
Содержание CDM-750
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Страница 224: ...CDM 750 Advanced High Speed Trunking Modem Revision 2 Appendix A MN CDM750 A 4 Notes...
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