NI PXI-5660 Getting Started Guide
18
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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. This signal
can be propagated to the PXI backplane when the NI 5600 is installed in PXI Slot 2.
10 MHz OUT
Generate replications of the downconverter 10 MHz frequency reference signal. These
replicated signals are also useful for driving other devices. Each replication is 180
degrees 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.
10 MHz OUT
PXI 10 MHz I/O
Provides bidirectional connection to the PXI 10 MHz backplane clock.
This connector can be used to drive the PXI 10 MHz backplane clock
only
when the
NI 5600 is installed in PXI Slot 2. This connector can be used to export the
PXI 10 MHz backplane clock when the NI 5600 RF downconverter is installed in any
PXI slot. Refer to the help file for your device for more information.
OUTPUT
Connects to the INPUT connector on the 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 RF vector signal analyzer.
Table 3.
NI 5600 RF Downconverter Module Front Panel LEDs
LED
Indication
POWER
Indicates the basic hardware power status of the NI 5600 RF downconverter module.
This LED functions identically to the ACCESS LED on the digitizer module front panel.
OFF—The module is not yet functional or has detected a problem with a PXI power rail.
GREEN—The module is functional and receiving power.
STATUS
Indicates the status of the NI 5600 RF downconverter module PLLs.
OFF—The module is in an uninitialized state, or the module PLLs are attempting to lock.
GREEN—The module is in a ready state; applicable PLLs are locked.