Modular Systems > National Instruments > PXI Vector Signal Generators

781262-02

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NI 781262-02, 156 dB, 85 MHz to 3.3 GHz, 100 MHz, 1,458 g, PXIe-5673E 3.3 GHz RF Vector Signal Generator

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National Instruments - PXI Vector Signal Generators - 781262-02
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National Instruments - PXI Vector Signal Generators - 781262-02
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National Instruments 781262-02 PXIe-5673E RF Vector Signal Generator

The National Instruments 781262-02 (PXIe-5673E) is a high-performance 3.3 GHz RF vector signal generator designed for wireless device validation, semiconductor characterization, and automated test applications. Operating across a frequency range of 85 MHz to 3.3 GHz, the module features a 100 MHz instantaneous bandwidth, a low noise density of -144 dBm/Hz, and a compression-to-noise dynamic range of 156 dB. Its modular PXI Express architecture enables seamless integration into automated test setups, delivering accurate modulated RF signal generation with exceptional signal fidelity.

The generator delivers precise digital modulation performance, utilizing Quadrature Phase-Shift Keying (QPSK) locked to an onboard reference clock. At a 0.16 MS/s symbol rate (200 kHz bandwidth), it achieves a nominal Error Vector Magnitude (EVM) of 0.3% at 825 MHz, while at a 4.09 MS/s symbol rate (4.98 MHz bandwidth), its Modulation Error Ratio (MER) spans 38 dB to 51 dB across tested frequencies. Front-panel local oscillator interfaces include a 50 Ω LO IN port accepting 50 MHz to 6.6 GHz signals at 0 dBm nominal input (VSWR < 2:1, +18 dBm max power) and an LO OUT port delivering 0 dBm output power (±1.0 dB typical accuracy) with -50 dBc isolation at 1 GHz when disabled.

Output dynamic range and control features include continuous power adjustment with 0.5 dB resolution and fast amplitude settling times under 10 ms (within 0.5 dB). System power draw is capped at 1 A maximum on the +3.3 V rail and 1 A maximum on the +12 V rail. Weighing 1,458 g, the 781262-02 is built for high durability, operating across ambient temperatures from 0°C to 55°C (10% to 90% non-condensing relative humidity) and withstanding operational shock up to 30 g peak (11 ms half-sine pulse).


Part Number
781262-02

Model Name
PXIe-5673E

Part Type
3.3 GHz RF Vector Signal Generator

Typical Noise Density
-144 DBm/Hz

Weight
1,458 g

Instantaneous Bandwidth
100 MHz

Frequency Range
85 MHz To 3.3 GHz

Compression-To-Noise Dynamic Range
156 DB

Source Module Voltage (3.3 V) Current Voltage
1 A (max)

Source Module Voltage (12 V) Current Voltage
1 A (max)

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Common Typos:

I81262-02, 7U1262-02, 7812T2-02, 78126W-02, 78126E-02

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