Table 2.
NI 5600 RF Downconverter Module Front Panel Connectors
Connector
Use
FREQ REF IN
Routes an external frequency reference signal to which the NI 5600
can lock. You can propagate this signal to the PXI backplane when
the NI 5600 is installed in PXI Slot 2.
10 MHz OUT
(two connectors)
Generates replications of the downconverter 10 MHz frequency
reference signal. These replicated signals are useful for driving other
devices. Each replication is 180° out of phase with the other. The
signal output at these connectors is always on and cannot be
disabled.
Connect the lower 10 MHz OUT connector to the REF CLK IN
connector on the NI 5620 module front panel or to the CLK IN
connector on the NI 5142.
PXI 10 MHz I/O
Provides bidirectional connection to the PXI 10 MHz backplane
clock.
You can use this connector to drive the PXI 10 MHz backplane clock
only when the NI 5600 is installed in PXI Slot 2. You can use this
connector to export the PXI 10 MHz backplane clock when the
NI 5600 RF downconverter is installed in any PXI slot.
OUTPUT
Connects to the INPUT connector on the NI 5142 IF digitizer
module front panel.
This connector is the output terminal for the frequency-translated IF
signal for digitization.
INPUT
Connects to the analog RF input signal to be measured by the
NI 5661.
10
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NI PXI-5661 Getting Started Guide
