User's Manual

Page 11
Norsat ODU 090-25012-00 Norsat
Receive IF (Rx)
The Receive IF (Rx) connector is a 50 ohm N-type female connector,
which is colour coded green. The signals supplied on this interface
are:
Receive IF: the received signal amplified and downconverted by the
LNB.
24 VDC: supplied to the LNB.
N
OTE
This interface does not supply a 10 MHz signal.
This cable is a 50 ohm cable rather than the usual 75 ohm cable for
receive systems. The LNB has a 75 ohm connection, however, the
impedance is changed in the Interface/Indicator unit.
Transmit Monitor In (Tx
Monitor)
The Transmit Monitor In (Tx Monitor) connector is a 50 ohm N-type
female connector, which is colour coded blue. The signals supplied on
this interface are:
Transmit Monitor IF: a downconverted sample of the transmitted
signal; the transmitted signal is coupled and downconverted to L-band
(950-1450 MHz).
10 MHz reference: supplied by the Baseband/IF unit to the
Downconverter Module to lock the local oscillators used in the
downconversion.
24 V DC: supplied to the Ku-L downconverter.
SSPA Control and
Monitor
The SSPA Control and Monitor connector is a multi-pin amphenol
female connector. The signals supplied on this interface are:
SSPA Mute Control: allows the SSPA to be turned off by the IDU.
SSPA Temperature Sensor Reading: provides an indication of the
SSPA temperature.
SSPA Power Detector Reading: provides an indication of the SSPA
transmitted power.
Received Signal Strength Indication: provides an indication of the
received signal strength. The receive signal strength is measured in
the IDU and is displayed at the ODU. This Received Signal Strength is
provided to the Antenna/RF unit for display via the Receive Signal
Strength Indication signal.
Ground: ties the chassis of the IDU and ODU together.
AC Power
AC Mains supply, 120240VAC, 50/60 Hz
ODU Functionality