PENDULUM

PFA-127

Overview, specifications and how to request a quote

Pendulum Instruments · Power & Frequency Analyzers

PFA-127

CW and pulsed RF power and frequency analyzer to 27 GHz: one instrument in place of a peak/average power meter and a frequency analyzer.

PFA-127 is Pendulum's new instrument, announced in September 2026. It builds on the award-winning CNT-100 multi-channel frequency analyzers and measures RF frequency, power, pulse width and PRI in parallel and gap-free in one box. The RF channel covers 15 GHz as standard and unlocks to 20 or 27 GHz by software license, and a 2-channel 400 MHz time interval analyzer with 14 ps resolution (7 ps optional) is built in.

Overview

PFA-127 puts a 27 GHz microwave frequency analyzer and an RF peak/average power meter in the same instrument, and tracks frequency and power against time side by side on the graphic screen at up to 20 MSa/s, with sample intervals down to 50 ns. For pulsed RF it analyzes pulse width, PRI, frequency in pulse and power in pulse in real time, including pulse-to-pulse variation, and zero dead time means no event is missed. That makes it a fit for frequency-hopping signals and for FM, PWM, FSK, BPSK and AM modulation work. Power range is -30 to +30 dBm with 0.01 dB resolution in a 1 µs gate; typical CW power accuracy at room temperature is ±0.5 dB (2σ) from 1.5 to 15 GHz and ±0.8 dB (2σ) across the full range. The built-in 2-channel 400 MHz baseband analyzer shares the RF time scale, so baseband events can be correlated with RF behavior, and a baseband signal up to 400 MHz can be verified in parallel with an RF signal up to 27 GHz on channel C. In production, one PFA-127 replaces a frequency counter and a power meter, or a far more expensive spectrum analyzer, and block measurements over Ethernet at up to 170k samples/s shorten ATE test time. Pendulum targets high-speed radar, microwave components, wireless telecom and general R&D.

PFA-127

Key specifications

Input channels1 RF input (channel C) plus 2 independent 400 MHz inputs (channels A, B), parallel timestamping on all channels
RF frequency range400 MHz to 15 GHz standard; software-upgradable to 20 GHz or 27 GHz
Power measurement-30 to +30 dBm; 0.01 dB resolution in 1 µs gate time; CW, peak and average power, PAPR
Power accuracy (typical, room temperature)±0.5 dB (2σ) for CW from 1.5 to 15 GHz; ±0.8 dB (2σ) across the full range
Pulsed RF measurementPulse width, PRI, frequency in pulse, power in pulse; 50 ns minimum sample interval, RF pulses as short as 100 ns
Measurement speedUp to 20 MSa/s, zero dead time, gap-free
Frequency resolution12 digits/s; up to 13 digits/s with statistical resolution enhancement
Time resolution (channels A, B)14 ps standard; 7 ps with software option
TimebaseTCXO standard; optional high-stability or ultra-high-stability OCXO
Display and operation5-inch color touch screen, USB mouse, built-in web interface; numeric, trend, modulation, distribution and ADEV views
InterfacesEthernet, USB; WLAN via external USB Wi-Fi adapter; GPIB optional
Remote throughputUp to 170k samples/s in Ethernet block mode

Features

Power meter and frequency analyzer in one

RF frequency and power are measured in parallel in the same instrument, replacing a peak/average power meter and a frequency analyzer and saving cost and rack space.

Real-time pulsed RF analysis

Pulse width, PRI, frequency in pulse and power in pulse are measured as they happen, with pulse-to-pulse analysis for radar and pulsed RF component verification.

Modulation domain analysis at 20 MSa/s

Sample intervals down to 50 ns capture frequency hopping and fast FM, PWM, FSK, BPSK and AM changes in frequency and power, with pan, zoom and cursor read-out on the graphs.

2-channel 400 MHz time interval analyzer included

The baseband channels share the RF time scale, so you can correlate external arming events with RF pulse timing, or measure baseband and upconverted RF frequency side by side.

Frequency range grows by license

The standard 15 GHz model upgrades to 20 or 27 GHz at any time by software key. 7 ps resolution, pulse generator, TIE, frequency offset and ADEV graphing are software options as well.

Ready for automated test

Ethernet and USB are standard and GPIB is optional. Block measurements reach 170k samples/s, and the built-in web interface lets you operate the unit and download data locally or remotely.

On screen

PFA-127 screen showing RF frequency and power against time

Graphical display

Frequency and power on one screen

Results are shown numerically and graphically, with RF frequency and RF power displayed together. The same data set can be viewed as numbers, a distribution or a trend, and pan, zoom and cursor read-out show everything from slow drift to fast modulation.

Options and configuration

Tick the options you need. We compile the configuration into a list and carry it into the quote request form.

Standard equipment (included)

RF channel C (15 GHz)400 MHz to 15 GHz, parallel frequency and power measurement on CW and pulsed RF.
Two 400 MHz inputs (channels A, B)Baseband frequency and time interval measurement with 14 ps resolution.
Standard TCXO timebaseTemperature-compensated crystal oscillator.
Ethernet / USBRemote control, data transfer and built-in web interface.
Certificate of calibrationSupplied with the instrument.

Hardware options (factory installed)

Software license options

0 options selected Standard configuration only
Add configuration to quote request

Downloads

Authorized distributor in Taiwan
Manufacturer technical support
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Manufacturer warranty

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