Comtech EF Data XSAT-7080 - Manual (Page 29)

XSAT7080 X-Band Transceiver Revision 0
System Operation MN/XSAT7080.IOM
3–3
3.2 T
URNING
O
N THE
XSAT
The XSAT does not contain a ‘Power On/Off’ switch. The XSAT is powered ON by
connecting the J3 “AC Power” connector to the appropriate prime power source. See
Section 1 for detailed requirements for the ‘prime power source’.
WARNING
Never turn the unit ON without proper termination on the J7 “RF
OUTPUT” port. Individuals can be exposed to dangerously high
electromagnetic levels.
In addition, when directly connecting the XSAT to Laboratory Test Equipment, a DC
block should be used between the J2 ‘RF IN’ port and RF test source. The reason for this
is that the XSAT can be configured to supply a 12Vdc, 400 milliamp, LNA Current
Source output on this port. The DC block will protect any test equipment connected
directly to J7.
3.3 C
ONFIGURING THE
XSAT
The XSAT is a complete RF Down Converter Terminal, RF Up Converter Terminal, and
RF High Power Amplifier (HPA) in a single weather safe package. The following
paragraphs will define the meaning and use of all of the controllable parameter of the
XSAT.
3.3.1 F
REQUENCY
Both the Receiver frequency and the Transmitter frequency are user configurable. The
receiver frequency can be selected to any frequency divisible by either 1.0 MHz or 2.5
MHz in the valid Rx frequency range. The transmitter frequency can be selected to any
frequency divisible by either 1.0 MHz or 2.5 MHz in the valid Tx frequency range.
Associated Remote Command(s): DFQ= , UFQ=
3.3.2 A
TTENUATION
Both the Receiver attenuation and the Transmitter attenuation are user configurable. The
receiver attenuation can be selected between 00.00 and 20.00 dB in 0.25 dB increments.
The transmitter attenuation can be selected between 00.00 and 25.00 dB in 0.25 dB
increments.
Associated Remote Command(s): DAT= , UAT=