Verify Tx/Rx Path Gain Budgets
Pre-Installation Requirements
3-22
Ocean TRx™ 4500 Installation and Operations Manual
3.7.2.2
Dual-Band System L-Band Rx Levels
The calculation of the Rx L-Band path takes into consideration all Losses & Gains of the
OceanTRx4-500™ system: CCU losses, Attenuation Set-Up in the CCU, DSS losses, LMR
Cable loss (according to the length and type), Cables / RJ losses / Splitter in the pedestal,
LNB Gain, ADMx / BDMx Rx Path Total Gain.
The LNB output level as calculated separately according to the satellite EIRP, Transponder
Bandwidth, Used Bandwidth, OceanTRx4-500™Antenna Gain, down link frequency.
Tx Modem
LMR
RJ
ADMx
L Band
MUX Band
MUX
Band
L Band
A
B
C
D
E
F
RF
Band
G
CCU1U
BDMx
MUX
Band
L Band
LMR
RJ
ADMx
MUX Band
MUX
Band
b
c
d
e
f
RF
Band
g
DSS
BDMx
MUX
Band
L Band
Switch
Box
Gain
LNB
L Band
Splitter
L Band
Gain
Splitter
L Band
LNB
Figure
3-19: Dual OceanTRx4-500 L-Band Rx Path
