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P300H P300 Series Modem Installation and Operating Handbook Page 112
1:BUC On/Off[On ] 2:BUC Attenuator[7dB]
(Power at BUC reads: 32.7dBm)
Change, BUC/LNB, Tx/BUC, BUC Control Menu
6.12.6 Change, BUC/LNB, Tx/BUC, BUC CONTROL Menu
This screen is only available on the P310 L-Band modem if the BUC Type has been set to a known
Paradise BUC, the modem has the FSK communications option, and the Modem/BUC are set in
Independent mode. In the alternative Terminal mode (with Closed loop power control to the BUC flange)
the BUC is kept On and the BUC attenuator automatically controlled.
BUC ON/OFF This switches the BUC Tx on and off independently of the modems Tx Carrier
On/Off control. This may be useful where one BUC carries several carriers
(passively combined but with one modem providing DC / 10MHz Ref / FSK) and
you wish to mute all the carriers.
BUC
ATTENUATOR This allows the user to vary the attenuator in the BUC. Typically this is used when
there is a short run from the modem to the BUC made with reasonable quality
cable, and where with such a low loss the minimum output from the modem could
saturate the BUC input unless the attenuator (early in the BUC gain profile) is set
suitably high.
IF IN DOUBT, always start with the MINIMUM modem Tx Carrier level and the
MAXIMUM BUC attenuator setting.
The second line of this screen reports the actual power measured by the BUC.