Fluke 9640A
RF Reference Source Calibrator
The Fluke 9640A RF Reference Source generates precision sine wave signals from 10 Hz to 4 GHz with output levels from +24 dBm to –130 dBm. It features an integrated leveling head that delivers direct, accurate output to the device under test, enabling metrology-grade calibration performance. The unit supports a wide dynamic range, low phase noise, and low harmonic distortion for accurate RF measurements. It is compatible with MET/CAL™ Plus software for automated calibration.
| Frequency Range | 1 MHz - 4 GHz |
| Output Level Range | -130 - +24 dBm (to 125 MHz), 14 dBm at 4 GHz (leveled) |
| Level Accuracy | ±0.03 dB - 100 kHz, ±0.05 dB - 128 MHz, ±0.3 dB at 4 GHz |
| Phase Noise (typical at 1 GHz) | 9640A-STD / 9640A-STD/75: -122 dBc/Hz at 10 kHz offset 9640A-LPNX / 9640A-LPNX/75: -138 dBc/Hz at 5 kHz to 100 kHz offset |
| Modulation | AM, FM, PM (internal and external) |
| Included Leveling Head(s) | 9640A-STD, 9640A-LPNX: 50 Ω 9640A-STD/75, 9640A-LPNX/75: 50 Ω and 75 Ω |
| GPIB Emulation | All Models: HP3335A LPNX Models (optional): HP8662A/HP8663A |
| Optional Features | Integrated 50 MHz frequency counter |
- Frequency range from 1 MHz to 4 GHz
- Output level range from -130 dBm to +24 dBm (to 125 MHz), 14 dBm at 4 GHz
- High level accuracy (±0.03 dB to 100 kHz, ±0.05 dB to 128 MHz, ±0.3 dB at 4 GHz)
- Low phase noise performance, with enhanced LPNX model (-138 dBc/Hz at 5 kHz to 100 kHz offset)
- Modulation options: AM, FM, PM (internal and external)
- “Connect once, measure many” leveling head design (50 Ω or 50 Ω/75 Ω)
- GPIB emulation for HP3335A, optional HP8662A/HP8663A emulation for LPNX models
- Optional integrated 50 MHz frequency counter
- Compatible with MET/CAL software for automation
- Suitable for calibrating spectrum analyzers, RF voltmeters, modulation analyzers, receivers, and frequency counters
SKU: FLUK-9640A