ABC40UKA Manual
Page 10 of 35
10MHz Reference
The BUC must receive a stable external 10MHz reference provided by a stable signal source such as a
signal generator, satellite modem or injected externally with a Bias T (for example, ABT6ARN/ABT6ARF
manufactured by Actox Corporation) or a similar bias T type.
Please make sure to check the sticker on the BUC for the appropriate power source before any power
connections are performed.
Setting the L.O.
Switchable L.O. is mechanically changed by unscrewing the L.O. screw and pressing it in with any small
object such as toothpick. If the BUC is equipped with M&C interface, the L.O. could be switching
electronically with the appropriate M&C command.
Setting the TX and RX Frequencies
All transmit and receive frequencies are set in the modem.
For a direct connection to an L-band modem follow the manufacturer’s instructions on setting the transmit
and receive frequencies.
Ensure that it is safe to transmit prior to enabling the transmission.
LED Indication
SSPA LED Green
All OK
SSPA LED Red
Summary Alarm
L.O. LED Green
L.O. is set to 26.55 GHz
L.O. is set to 27.4 GHz
L.O. is set to 28.05 GHz
L.O. is set to 29.05 GHz
NO POWER
External Detected
Enabled
L.O. LED Green Blinking
L.O. LED Yellow
L.O.LED Yellow Blinking
NO LED indicators
10MHz LED Green
10MHz LED Green Blinking
