Lna Current Source - Comtech EF Data XSAT-7080 Series Installation And Operation Manual

XSAT7080 X-Band Transceiver
System Operation
• If 'Auto Fault Recovery' is ON and the same situation occurs, the XSAT will
automatically be unmuted and return to normal operating mode. To protect
against repetitive, momentary faults, if the XSAT experiences five occurrences of
the same fault, the 'Auto Fault Recovery' parameter will automatically be set to
OFF.
Example: If the Up Converter IFLO synthesizer goes unlocked and starts
sweeping while Auto Fault Recovery is ON, the XSAT would see a unlocked /
locked condition at the sweep rate of the IFLO synthesizer. After the 5th
occurrence the firmware will set Auto Fault Recovery to OFF and keep the
XSAT RF output muted.
Associated Remote Command(s):
3.3.13 LNA C
URRENT
The XSAT has the circuitry necessary to source current, at 12 Vdc, up the "RF IN" port
J2, to power a LNA. This current source can be turned ON/OFF via the user. This source
is capable of providing up to 400 mA.
Never turn the unit ON without proper termination on the J7 "RF
OUTPUT" port. Individuals can be exposed to dangerously high
electromagnetic levels.
WARNING
Exercise care 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 to protect the test equipment in case the source is
IMPORTANT
accidentally turned ON. (The factory default is OFF).
Associated Remote Command(s):
3.3.14 LNA C
URRENT
The XSAT provides the capability to monitor the LNA current when configured to
supply current to a LNA. In addition, an adjustable window detect for the LNA current is
provided. After attaching the LNA and turning on the current source, the user can
'Calibrate' the current and set a window from ±20% to ±50% to trigger an alarm. The
user can disable the 'window detect' feature by setting the window value to ±99%. (The
factory default is 99)
Associated Remote Command(s):
S
OURCE
C
ALIBRATION AND
3–7
AFR=
LCS=
C W
URRENT INDOW
CAL= , LCW=
Revision 0
MN/XSAT7080.IOM