© Norsat International Inc.
(“Norsat”) All Rights Reserved
2021-12-20 DOC-001527 Rev A
20
3.2.2 Manual Override Mode
While the Manual Override is enabled, the RSW will run in
Manual Override Mode.
In this mode,
the RSW does not take any action based on the fault state of the LNBs. This mode allows the
user to select what LNB is active without restrictions. The table below summarizes the RSW
actions based on the fault status while in Manual Override Mode.
STATE
ACTION
Fault on active device
No action taken
Fault on standby device
No action taken
Fault on both devices
No action taken
Switching to standby device
RSW will switch to the standby device
3.3 LNB Power
3.3.1 Integrated ULC
The RSW has an integrated Universal LNB Controller (ULC) which can be configured by the user.
When the ULC setting is enabled, both the Active and Standby LNB receive power from the ULC.
The table below outlines the output voltage and tone for each configurable band. In the case that
a single band LNB is used, the system will be limited to BAND 1.
Parameter
VOLTAGE
22kHz TONE
BAND 1
13V
OFF
BAND 2
18V
OFF
BAND 3
13V
ON
BAND 4
18V
ON
3.3.2 Power over IF Cable
If the power to the LNB is being supplied by an external source, the ULC must be set to
DISABLED. In this operating mode, the Active Device is supplied with the IF power and the
Standby Device is provided with 18V.