RESEARCH CONCEPTS RC3000 Instrukcja Użytkownika Pobierz pdf (Strona 9)

3.3.1.1.x DVB ID

This group allows the user to customize parameters associated with the positive identification

feature.

ENABLED:1 CONFIG-DVB ID

LO FREQ:10750

RANGE:30 TH: 15

DVB IDENT <0>DISABLED <1>ENABLED

ENABLED: <0>DISABLED <1>WITH PEAK <2>W/O PEAK

This field allows the positive identification feature to be disabled (0).

If the feature is enabled, it may be specified whether or not an automatic peakup on the

signpost and selected satellites will be performed. If high resolution sensors are available for

the azimuth and elevation axes, it is recommended that the automatic peakup (1) option be

chosen. If high resolution sensors are not available, automatic peakups cannot be performed

and option 2 should be chosen.

LO FREQ: LNB LO FREQENCY <10000 – 12000>

This field allows the frequency of the LNB’s local oscillator to be specified.

This value will be automatically be subtracted from a signpost’s downlink frequency in order

to describe the intermediate frequency that the DVB receiver will receive.

RANGE: DVB SCAN RANGE +/- <10 -90> DEGREES

This field specifies the number of degrees on either side of the estimated signpost position

that will be scanned.

This number should be somewhat larger than the worst case error that can be obtained from

the compass. Example: if you have confidence that the compass will never have more than a

15 degree error, then the scan range could be set to a value of 20.

TH: DVB SCAN THRESHOLD <10 -500>

This field specifies at what value above the open-sky noise floor that the scan for a signpost

will transition from high speed to low speed.

This value should be set low enough that slow speed will be triggered quickly as the scan

approaches a satellite. Conversely, it should be set at a high enough value that the transition

won’t be fooled by noise in the open-sky value.

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RESEARCH CONCEPTS RC3000 Instrukcja Użytkownika Strona 9