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3325B

Keysight Technologies (Agilent HP)Waveform

The Keysight (Agilent HP) 3325B is a highly accurate synthesized function generator and waveform synthesizer operating up to 21 MHz. It leverages advanced synthesis technology to provide outstanding frequency resolution, stability, and signal purity, making it an industry standard for testing filters, communication systems, audio systems, and digital components. Equipped with built-in modulation capabilities and multi-mode sweeps, the 3325B integrates easily into automated test systems via standard HP-IB connectivity.

Function GenerationSignal Generation

Specifications

General

ParameterValue
InterfacesHP-IB (GPIB)

Physical

ParameterValue
Power Supply100/120/220/240 V (+5%, -10%), 48 to 66 Hz, 90 VA (120 VA with all options)
Operating Temperature0 to 55 °C
Weight9.0 kg

Frequency Specifications

ParameterValue
Sine Wave Frequency Range1 µHz to 20.999 999 999 MHz
Square Wave Frequency Range1 µHz to 10.999 999 999 MHz
Triangle Wave Frequency Range1 µHz to 10.999 999 999 kHz
Ramp Wave Frequency Range1 µHz to 10.999 999 999 kHz
Frequency Accuracy±5 × 10^-6 of setting (at time of calibration)

Amplitude and Output

ParameterValue
Output Impedance50 Ω
Main Output Amplitude Range1 mV to 10 Vpp (into 50 Ω)
Amplitude UnitsVpp, Vrms, dBm (into 50 Ω)
Amplitude Resolution4 digits
DC Offset RangeUp to ±5.0 V (AC + DC peak, into 50 Ω)
DC Offset Resolution4 digits
Output IsolationChassis ground isolated, float up to ±42 V peak
Sync Output Logic LevelTTL-compatible square wave

Waveform Purity and Distortion

ParameterValue
Square Wave Rise and Fall Time< 20 ns (10% to 90% at full output)
Square Wave Overshoot< 5% of peak-to-peak amplitude at full output
Square Wave Duty Cycle50% nominal
Triangle/Ramp Linearity Deviation< 0.05% of full output (at 100 Hz, 10% to 90%)

Phase Control and Synchronization

ParameterValue
Phase Offset Range±719.9°
Phase Resolution0.1°
Reference Clock Input Frequency1, 2, 5, or 10 MHz (at least 0 dBm into 50 Ω)

Modulation

ParameterValue
Amplitude Modulation Depth Range0% to 100%
Amplitude Modulation Carrier Frequency1 µHz to 21 MHz
Amplitude Modulation Modulating Frequency (External)DC to 400 kHz
Phase Modulation Deviation Range±850°
Phase Modulation Modulating Frequency (External)DC to 5 kHz

Frequency Sweep

ParameterValue
Sweep TypeLinear, Logarithmic, discrete
Sweep Time Range (Linear)10 ms to 1000 s
X-Drive Output Range0 to > +10 V (proportional to sweep, rear panel)
Z-Blanking Output LevelTTL levels (rear panel)

Power and Mechanical

ParameterValue
Form FactorBenchtop with optional rackmount kit
Shipping Weight14.5 kg (32 lbs)

Environmental and Regulatory

ParameterValue
Relative Humidity Range95% (0 to 40 °C)
Operating Altitude Limit4,572 m (15,000 ft)

Option 002 High Voltage Output

ParameterValue
High Voltage Option Frequency Range1 µHz to 1 MHz (Option 002)
High Voltage Option Amplitude Range4.00 mVp-p to 40.00 Vp-p (Option 002, into ≥ 500 Ω || ≤ 500 pF)
High Voltage Option Max Output Current40 mA peak (Option 002)
High Voltage Option Output Impedance< 2 Ω at DC, < 10 Ω at 1 MHz (Option 002)

Spectral Purity

ParameterValue
Phase Noise<-60 dBc in a 30 kHz band centered on carrier (excluding ±1 Hz band)

Sweep

ParameterValue
Discrete Sweep Maximum Segments100

Rear Panel Inputs & Outputs

ParameterValue
Auxiliary Output Frequency Range21 MHz to 60.99999999 MHz
Auxiliary Output Impedance50 Ω
10 MHz Reference Output Level≥ 0 dBm into 50 Ω
10 MHz Reference Output Impedance50 Ω
1 MHz Reference Output Level≥ 0 dBm into 50 Ω
1 MHz Reference Output Impedance50 Ω

Power Requirements

ParameterValue
Line Voltage Options100 / 120 / 220 / 240 V (+5%, -10%)

Environmental

ParameterValue
Storage Temperature Range-40 °C to +75 °C

Technology

Fractional-N Synthesis

Applications

Electronic Test and Measurement, Signal Stimulation, Calibration, Filter Testing