Sunrise Telecom, Hukk Division
Page 25
N
OTE
: T
HESE
PARAMETERS
APPEAR
ON
SCREEN
ONLY
WHEN
64QAM
OR
SURF
BOARD
MODULATION
SCHEME
IS
CHOSEN
. I
F
256QAM
IS
SELECTED
THE
SYMBOLE
RATE
IS
5.360537 MH
Z
AND
THE
OTHER
PARAMETERS
REMAIN
THE
SAME
.
The choices for each field of the Edit Channels screen (Figure 3-
10) are:
M
ODULATION
:
NTSC
64-QAM
256-QAM
SURFboard cable modem
DIGITAL
F
REQUENCY
O
FFSET
:
Variable up or down in 62.5 kHz steps. This allows the operator
to tune a channel to a specific frequency outside a standard plan.
Channels on or near emergency or aeronautical frequencies are
sometimes offset to avoid potential interference.
A
CTIVE
:
Yes—The channel is active both when the tuning knob is used to
while making a channel selection and during system scans.
No—The channel will not appear during system scans and tuning
knob channel selection. Channels will need to be manually en-
tered.
A
UTOTEST
:
Yes—The channel is active during all
Auto Test functions.
No—The channel is not active during Auto Test functions.
I
NVERT
S
PECTRUM
:
No— Used for normal operation. This is the default and in most
cases this parameter will not have to be changed.
*
Yes—The CR1200R expects a signal with an inverted spectrum.
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