National Instruments PXI-5661 Getting Started Manual

Also see for NI PXI-5600: Getting started guide Getting started guide

Contents

National Instruments PXI-5661 Getting Started Manual Manual pdf 20 page image

ConfigurationWhat Should I Do if the Device Does Not Initialize?Failure to initialize may indicate a problem with module interconnections or with MAX. If theniRFSA Initialize VI or the niRFSA_init function returns an error and the NI 5661 fails toinitialize, complete the following steps:1. Reconnect the NI 5661 hardware module front panel cables securely.2. Power on your system and run the MAX configuration and self-test procedures.Related InformationInterconnecting the NI 5661 Modules on page 6Configuring the NI 5661 in MAX on page 14What Should I Do if the NI 5600 RF Downconverter STATUSLED Does Not Light?If the RF vector signal analyzer is programmed to lock to an external reference source or tothe PXI backplane but the STATUS LED light does not indicate a phase-locked status, verifythe following items:1. Verify that a cable is connected from the external source or the PXI 10 MHZ I/Oconnector to the FREQ REF IN connector.2. Verify that the external source signal is large enough—typically greater than -10 dBm.3. Verify the external source signal falls within the specified frequency accuracy.4. If you programmed the RF vector signal analyzer to use the NI 5600 RF downconvertermodule internal timebase, verify the following items:a) Verify that one or more of the local oscillators is phase-locked if the RF vectorsignal analyzer measures the frequency incorrectly or detects no signal when one issupplied.b) Verify that there is no driver software error and the LED is not damaged if the RFvector signal analyzer measures the frequency correctly but the LED does not light.What Should I Do if the NI 5142 IF Digitizer Module Does NotPhase-Lock to the RF Downconverter Module?If the IF digitizer module fails to phase-lock to the NI 5600 RF downconverter moduleinternal reference through the front panel, complete the following steps:1. Verify that the cable is not faulty and that all cables are connected to the correctterminals.2. Verify that there is a reference signal output from the NI 5600 10 MHZ OUT front panelconnectors.If there is no signal at these output terminals, contact NI technical support or visit ni.com/support.20 | ni.com | NI PXI-5661 Getting Started Guide