Quantum and Evolution Series Installation and Operating Handbook
7-99
Edit-Rx-Carrier-Advanced-LNB PSU Menu
The L-band modem can supply either 15V or 24V at 500mA to the LNB up the coaxial site
cable or `line powered`. The options available are
Off
,
15V
,
24V
and Multiswitch. Note
that the Multiswitch option selects the Global Communications LNB Multiswitch, allowing
selection of a high-band/low-band LO and horizontal/vertical polarization.
Severe damage may occur if a DC supply (or the wrong voltage DC
supply) is fed to a LNB not configured to be `Line powered`.
Edit-Rx-Carrier-Advanced-LNB 10MHz Reference Screen
When switched on, the modem’s internal 10MHz reference signal is sourced from the
modem up the coaxial site cable to the LNB.
Edit-Rx-Carrier-Advanced-LNB 1:1 Screen
This controls whether LNB services (i.e. DC supply and 10MHz reference) stay with the
on-line modem or switch to the standby modem when a 1-for-1 switchover occurs in a 1-
for-1 redundant pair of modems. Note that FSK communications will always be switched
over.
DC voltage:
[Off]
New: 15v
10MHz reference:
[Off]
1: Off
2: On
Mute Services in Standby: [Off]
1: Off
2: On
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