The PXI-1450B Local Oscillator Module is a PXI 3U, 2-slot synthesizer module intended for frequency down conversion applications. The PXI-1450B is a VCO-based, 3 to 9 GHz synthesizer capable of a tuning resolution of less than 1 Hz. It is optimized for speedy (1 ms) settling time to allow for fast frequency down conversion applications that employ Phase Matrix models PXI-1420 MW Downconverter Module (2.7 to 26.5 GHz) and PXI-1430B RF Downconverter Module (100 kHz to 2.9 GHz). The PXI-1450B contains all the circuitry necessary to lock the synthesizer and a 100 MHz ovenized crystal oscillator to an externally provided 10 MHz master reference oscillator. This capability enables the module to distribute its internal high-stability reference or the customer-provided external reference to other PXI modules within a PXI mainframe chassis.

The PXI-1450B is intended for use in applications such as synthetic instrumentation, microwave receivers, signal intelligence, or anywhere a microwave signal needs to be down converted to a baseband frequency for data capture, analysis, and measurement.

The PXI-1450B is RoHS compliant.

Description Specification
Frequency Output Range 3 to 9 GHz (2.75 to 10 GHz typ.)
Frequency Output Step Size 0.1 Hz
Frequency Switching Speed 500 μs (300 μs typ.)
Output Power Accuracy +16 dBm ± 2 dB




Operation Manual

Letter of Volatility


Ordering Information

As of January 2021, all purchase orders for Phase Matrix products must reference NI part numbers and must be submitted to NI Corp or its distribution partners. Please contact your local NI office for purchasing instructions and options.

Model PXI-1450B Local Oscillator
Options None 
Accessories None
Related Products PXI-1410, PXI-1420, PXI-1430B, PXI-1440B


The NI and PMI part numbers listed below are for the same product. No changes were made to the products.


NI Part Number 781780-01 PMI 1450B LOCAL OSCILLATOR

Servicing Information►

When requiring service for your PMI product through NI, please reference your serial number and the following module part number:

NI Module Part Number Description



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Phase Matrix warrants its products to be free from defects in material and workmanship for one year from the date of delivery. Damage due to accident, abuse, or improper signal level is not covered by the warranty. Removal, defacement, or alteration of any serial number, inspection label, marking or seal may void the warranty. Phase Matrix will repair or replace, at its option, any components of this product that prove to be defective during the warranty period provided that the entire unit is returned freight prepaid to Phase Matrix, Inc. or an authorized service facility. In-warranty units will be returned freight prepaid; out-of-warranty units will be returned freight COLLECT. No warranty other than the above is expressed or implied.