BridgeTech VB20 - SAT Tuning Setup

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6.16.2 SAT Tuning setup

The following parameters are defined for each SAT frequency:

SAT - Tuning setup:

Name: A name should be assigned to each frequency channel

Transponder

frequency:

The transponder frequency set to 1094 MHz when used with

the VB273 redundancy module.

LNB frequency: The LNB frequency in GHz Set to zero when used together

with the 273 redundancy module.

LNB voltage: The LNB voltage - may be 0V, 13V or 18V. Set to 0V when

used with VB273.

22kHz tone: Enable or disable 22kHz tone. Set to DISABLED when used

with VB273.

DiSEqC: The satellite front-end module supports Diseqc 1.2 signalling.

The

operator can enable a particular Diseqc message to be

transmitted

towards the antenna for each frequency defined in the tuning

setup typically used to control L-band switches. Specifically,

the message

sent has the format ( 0xE0 0x10 0x39 N ), where N is a byte

configurable by the user to be between 0x00 and 0x0f. This is

the command 0x39 "Write to Port group 1 (Uncommitted

switches)". Set to OFF when used with VB273.

Symbol rate: The SAT symbol rate in Msymb/s. Set to the corresponding

symbol rate used by the modulators. Alternatively set to a

sufficiently high value to cover the highest symbol rate the

system will use. The demodulator will sync in on the symbol

rate actually used.

ETR thresholds: Selection of the ETR threshold template that should be