The Keysight / Agilent 35670A is a versatile FFT dynamic signal analyzer equipped with a built-in source for general spectrum and network analysis, octave, order, and correlation analysis. Designed to be rugged and portable, it is optimized for field work and demanding R&D applications, particularly in troubleshooting noise, vibration, and acoustic (NVH) problems, analyzing rotating machinery, and characterizing control system parameters.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB (IEEE-488), RS-232, Parallel |
Physical
| Parameter | Value |
|---|---|
| Operating Temperature | 0 to 55 |
Input Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 (standard) or 4 (with Option 1C2) |
Frequency Specifications
| Parameter | Value |
|---|---|
| Frequency Range (1 Channel) | Up to 102.4 kHz |
| Frequency Range (2 Channels) | Up to 51.2 kHz |
| Frequency Range (4 Channels) | Up to 25.6 kHz |
| Frequency Resolution | 100, 200, 400, 800, and 1600 lines |
Amplitude and Phase Specifications
| Parameter | Value |
|---|---|
| Dynamic Range | 90 dB (130 dB in swept-sine mode) |
Source / Stimulus Specifications
| Parameter | Value |
|---|---|
| Signal Types | Random, Burst random, Periodic chirp, Burst chirp, Pink noise, Sine, Arbitrary waveform |
Measurement and Analysis Modes
| Parameter | Value |
|---|---|
| Octave Analysis | Supported (with triggered waterfall display) |
| Order Tracking Analysis | Supported (with tachometer input and orbit diagram) |
Data Storage and Memory
| Parameter | Value |
|---|---|
| Removable Media Type | Built-in 3.5-inch floppy disk |
Inputs
| Parameter | Value |
|---|---|
| Input Impedance | 1 MΩ, shunted by < 100 pF |
| ADC Resolution | 16-bit |
| Maximum Input Voltage | 42 V peak |
| Anti-Alias Filter | Included (automatically tracks span) |
Triggering
| Parameter | Value |
|---|---|
| Trigger Sources | Free Run, Internal, External, Source, HP-IB |
Signal Source
| Parameter | Value |
|---|---|
| Source Output Signals | Random, Burst Random, Periodic Chirp, Burst Chirp, Pink Noise, Sine, Arbitrary |
Signal Processing
| Parameter | Value |
|---|---|
| Window Functions | Hann, Flat Top, Uniform, Force, Exponential |
| Averaging Types | RMS, RMS Exponential, Vector, Peak Hold |
Performance
| Parameter | Value |
|---|---|
| Real-Time Bandwidth (1 Channel) | 25.6 kHz |
| Real-Time Bandwidth (2 Channels) | 12.8 kHz |
| Real-Time Bandwidth (4 Channels) | 6.4 kHz |
| Frequency Accuracy | ±0.003% (30 ppm) |
Analysis
| Parameter | Value |
|---|---|
| Trace Math Operations | Add, subtract, multiply, divide, integrate, differentiate, FFT, IFFT |
Options
| Parameter | Value |
|---|---|
| Option 1C2 | Add 2 channels (4 channels total) |
| Option 1D0 | Computed Order Tracking |
| Option 1D1 | Real-Time Octave Analysis |
| Option 1D2 | Swept Sine Measurement |
| Option 1D3 | Curve Fit and Synthesis |
| Option 1D4 | Arbitrary Waveform Source |
| Option UK4 | Microphone / ICP Sensor Power (4 mA, 24 Vdc nominal) |
Technology
Fast Fourier Transform (FFT)
Applications
Noise, Vibration, and Acoustic (NVH) Analysis, Rotating Machinery Evaluation, Control Systems Characterization
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