Norsat O3b 20W BUC - Manual (Page 21)

on again and check the Over-temperature state on the BUC GUI window.
3) When Over-power became red on the BUC GUI window.
- IF input power is too high
 Check the IF input power level.
- Or, the BUC is faulty
 Contact NORSAT for further support.
4) When External Mute became red on the BUC GUI window.
- External Mute pin is not connected to ground.
 Check the External Mute wire connected to ground.
- Or, the BUC is faulty
 Contact NORSAT for further support
B) RF output power is low even if SSPA is on
1) Gain setting on the BUC GUI window is too low
 Check gain setting on the BUC GUI.
2) Input IF power is too low to drive the BUC properly
 Check the output level of the IF power source.
3) IF cable or connectors has high insertion loss
 Check the IF cable or connectors.
4) RF cable or connector or WR28 waveguide adapter has high insertion loss
 Check the RF cable, connector, or WR28 waveguide adapter.
5) One of internal components are faulty
 Contact NORSAT for further support.
© 2014 Norsat International Inc. Page 21 of 25