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Phase Matrix PXI-1440 IF Downconverter Module
Quick Start Guide
REF A IN 100 MHz
SMB (m) connector is used to deliver a
100 MHz reference signal into the front panel. This 100 MHz reference
signal can be supplied by the PXI-1450 Local Oscillator Module from
either the REF A OUT 100 MHz or REF B OUT 100 MHz. These
100 MHz reference signals are phase coherent with the 10 MHz
reference being used.
VIDEO OUT
SMB (m) connector is used to output the video output
signal which is enabled at all times. The video output is a DC level
which is representative of the total signal contained within the IF
passband of the system.
This video output consists of the combined video output of both signals
that can be input into IF A IN and IF B IN; these IF input signals can be
supplied by the PXI-1430 RF Downconverter Module and PXI-1420
MW Downconverter Module.
IF AUX OUT
SMB (m) connector is used to deliver a narrow-band
IF signal output centered on 21.4 MHz out of the front panel.
The principal usefulness of the IF AUX OUT is in the generation of a
spectrum analyzer display where the resolution bandwidth of the system
is set by the bandwidth of a switchable filter; this switchable filter can
be set to a bandwidth of 8 MHz or 30 kHz.
C A U T I O N
The maximum power output of the IF AUX OUT connector can 20 dBm!
Care should be used when connecting this IF AUX OUT to a digitizer or other
equipment. When the IF AUX OUT normal operating range is exceeded, the overload
indicator will be illuminated. (Refer to