| 20-600 kHz Internal Audio Oscillator |
Additional Features:
- Frequency Range: 500.0 kHz-512.00 MHz
- Ranges and Range Overlap: Ranges extend approximately 10% below and 7% above the normal frequency
- Modulation: AM, FM, Pulse
- Output Power: +19 to -145 dBm
- Frequency Resolution: 1.0 Hz
- Level output range: +19 to -145 dBm (2 V to 0.013 µV)
- Accuracy: 6-digit LED display with X10 and X100 expand, accuracy depends on internal or external reference used
- Extremely low noise
- Built-in phase lock counter
- Output is calibrated, metered, and leveled to within ±0.5 dB across the full frequency range of the instrument
- Output provides AM, FM, and pulse modulation for a wide range of receiver test applications
- Internal modulation is available from 20Hz to 600kHz
- Modulation is calibrated and metered for direct readout under all operating conditions
The Agilent HP 8640B AM/FM Signal Generator is designed for testing of radio receiver Systems. It is a phase-locked cavity design that features low SSB phase noise. The 8640B Signal Generator covers the frequency range of 500 kHz to 512 MHz (450kHz to 550 MHx with band over-range) and can be extended to 1100 MHz with an external doubler. The 8640B has an output level range of +19 to -145dBm and is calibrated and metered. The output is leveled to within +/-0.5 dB across the full frequency range of the instrument.
The generator also provides AM, FM, and pulse modulation for a wide range of receiver test applications. AM and FM can be performed independtly or simultaneously in either the internal or external modes. This modulation is calibrated and metered for direct readout under all operating conditions. External pulse modulation is also available.
The basic frequency source of the 8640B is a mechanically tuned high-Q cavity oscillator that operates over the frequency range 230-550MHz. This oscillator has an inherent stability of better than 10 ppm/10 min and exceptionally low noise characteristics. The lower 9 frequency ranges are obtained by dividing the basic oscillator frequency and filtering the unwanted 1 Hz bandwidth for various offsets from a 256 and 512 MHz carrier.
Using this technique, sub-harmonic and non harmonic-spurious are virtually eliminated. A band over-range of 7% to 10% is also provided for convenience when operating near the nominal band edges.
Технические характеристики
| Manufacturer | Agilent, HP, Keysight |
|---|---|
| Condition | Used |
| Frequency | 512 MHz |
