P348 dual-channel benchtop I/Q modulator

I/Q Modulator - P348
  • Two independent, isolated I/Q quadrature modulator channels
  • Performs eddy current and proximity sensor simulation
  • Precision linear modulation of RF carrier inputs
  • Transformer isolated inputs/outputs
  • Switchable input impedances
  • Customizable for frequency, matching, and amplitudes
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The P348 is a compact benchtop/half-rack all-analog two channel quadrature modulator. Each channel's isolated sine wave input is split into quadrature (90 degree real/imaginary) phases and precision multiplied by user-supplied DC-coupled bipolar baseband input signals, then summed into an isolated output.

The P348 can simulate a wide range of inductive proximity and eddy-current transducers, such as jet engine blade tip sensors, automotive engine measurements, and sub-micron semiconductor fabrication equipment sensors. It is also suitable for precision RF modulation, SSB generation, and mixing operations.

The P348 is customizable for various carrier frequencies, signal levels, impedances, and connectors. Monitor outputs allow non-intrusive inspection of input and output waveforms. Each channel includes an additional signal or noise summing input.

FUNCTION Two-channel I/Q Modulator
CARRIER FREQUENCY Single frequency, 14.8 MHZ
Other frequencies on request
CARRIER INPUT RANGE 28Vpp nominal, 34Vpp Max
Switchable input impedance 50 Ω, 100 Ω, HiZ
I INPUTS ± 5V, -3 dB at 1 MHz, 500 Ω
Q INPUTS ± 5V, -3 dB at 1 MHz, 500 Ω
OUTPUTS 400 mV p-p full scale into 50 Ω
SUM INPUTS 0.04 gain to loaded output for noise simulation
5K Ω input impedance
90° PHASE SHIFT ACURRACY ± 3° at specified carrier frequency
INPUT MONITOR Provides attenuated (140:1) signal for monitoring of input, 50 Ω
OUTPUT MONITOR Provides attenuated (2:1) signal for monitoring of output, 50 Ω
CONNECTORS Isolated Triaxial with optional grounding for IN and OUT carrier wave
SMB for monitors, I, Q and SUM
BNC optional
PACKAGING 7.0" (L) x 8.5" (W) x 2.25" (H) Aluminum enclosure
INDICATORS Green power, two orange signal indicators
OPERATING TEMPERATURE 0 to 70°C
CALIBRATION INTERVAL No internal calibrations
POWER 24 volts DC, 500mA max
2.1 x 5.5 mm barrel connector, center pin positive
External supply included

PDF Block Diagram: P348 dual-channel benchtop I/Q modulator

PDF Datasheet: P348 dual-channel benchtop I/Q modulator

PDF Manual: P348 dual-channel benchtop I/Q modulator

P348-1: dual-channel benchtop I/Q modulator

J24-1: 24 volt 1.2 amp power supply

J27-1: 2.1 x 5.5 mm barrel to pigtail power cable

J42-1: 3′ SMB to SMA cable

J47-1: BNC female to triax male adapter

J53-1: 3′ SMB to BNC cable

J53-2: 6″ SMB to BNC cable

P10-1: 19" rack mount shelf (two p-boxes per rack)

P51-1: Mounting Flange