Rohde & Schwarz HMF2525 function/arbitrary waveform generator

The Rohde & Schwarz HMF2525 is a 25 MHz single-channel arbitrary function generator engineered for precision signal generation across research, development, industrial, and educational environments. It delivers a broad frequency range from 10 μHz to 25 MHz with a 250 MSa/s sample rate and 14-bit vertical resolution, enabling accurate generation of both standard waveforms and custom arbitrary signals up to 256 kSa in length. The instrument features a fanless design for silent operation and includes a 3.5" TFT display (320 × 240 QVGA) for real-time waveform visualization and parameter control.

Technical Specifications

• Frequency range: 10 μHz to 25 MHz


• Sample rate: Up to 250 MSa/s


• Vertical resolution: 14 bits


• Arbitrary waveform length: Up to 256 kPts


• Output voltage (50 Ω load): 5 mVpp to 10 Vpp


• Output voltage (open circuit): 10 mVpp to 20 Vpp


• Output impedance: Steplessly adaptable, 1 Ω to 10 kΩ


• DC offset: ±5 mV to ±5 V (50 Ω); ±10 mV to ±10 V (open circuit)


• Amplitude accuracy: ±1 % of setting ±1 mVpp at 1 kHz


• Timebase stability: ±1 ppm TCXO (10 MHz reference) Waveform Performance


• Sine THD: 0.04 % typical to 100 kHz; harmonic distortion <−70 dBc to 100 kHz, <−55 dBc from 100 kHz to 10 MHz, <−40 dBc from 10 MHz to 25 MHz


• Square rise/fall time: <8 ns fixed; jitter <1 nsrms; duty cycle 50 % ±1 % + 5 ns


• Pulse frequency: 100 μHz to 12.5 MHz; pulse width minimum 15 ns, 5 ns resolution; jitter <500 psrms


• Triangle/ramp frequency: 10 μHz to 5 MHz (up to 10 MHz); linearity <0.1 % to 250 kHz Physical & Interface


• Dimensions: 285 × 75 × 365 mm


• Weight: 3.6 kg


• Display: 8.9 cm TFT (QVGA)


• Includes operating manual, software CD, and power cord

Key Features

• Single-channel design with fanless architecture


• Comprehensive waveform library: sine, square, pulse, triangle, ramp, plus predefined curves (white noise, pink noise, cardiac, exponential rise/fall, sine function)


• Variable output impedance matching for impedance-critical applications


• Low phase noise: −115 dBc/Hz SSB at 10 kHz offset


• Precise DC offset capability for biasing and level-shifting applications

Typical Applications

• Component and subsystem characterization


• Audio and sensor signal simulation


• Educational laboratory demonstrations


• Low-frequency to RF transducer testing


• Arbitrary waveform synthesis for research protocols

Compatibility & Integration Supplied software CD enables waveform design and device control on compatible systems. Stepless impedance adaptation supports direct connection to 50 Ω equipment and high-impedance measurement circuits without external matching networks.