Model 845 Microwave/RF Signal Generator
The Model 845 is a series of low-noise and fast-switching microwave signal generators covering a continuous frequency ranges from as low as 100 kHz up to 12, 20, and 26 GHz, respectively, with a 0.001 Hz resolution.
The Model 845 provides an accurately levelled output power range and high spurious suppression. Advanced frequency synthesis with fractional-N divider makes for low SSB phase noise and micro-Hz resolution.
The standard Model 845-XX includes amplitude modulation (AM), DC-coupled, low distortion wideband frequency modulation (FM), PM, FSK and PSK, frequency chirp, and fast pulse modulation with internal pulse train generator.
The combination of pulse modulation and FM simulates Doppler effects or chirp signals. Simultaneous AM and pulse modulation provide the types of signal occurring in pulse radar applications with rotating antenna. The combination of FM and AM can be used to check fading effects of FM receivers.
Model 845 Microwave/RF Signal Generator Applications
Applications for the 845-XXG include:
- R&D low noise microwave source
- Production testing (industry-leading switching times; high dynamic range)
- Service and maintenance (battery operation)
- Signal simulation (Radar, WiMax, UWB)
- Aerospace & Defence (Pulse modulator, Chirps)
- Ultra-stable temperature compensated 100 MHz reference
- Ensures minimal drift and can be phase-locked to any stable external reference in a range from 1 to 250 MHz
- Optimum phase synchronous signals can be achieved by bypassing internal and feeding a 100 MHz signal directly as reference
- Supports various standard interfaces such as USB-TMC, LAN, and GPIB.
- Three internal modulations sources are available
- All modulation modes of the Model 845-XX can be combined
- This allows the generation of complex modulation signals for modern communication and location systems
- Allows fast analog and digital sweeps including flexible list sweeps
- Frequency, power and dwell times can be set individually
- Flexible triggering capability simplifies synchronization within test environments.
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