Model 835 Microwave/RF Signal Generator

1Overview

The Model 835 is a low-noise, fast-switching analog RF signal generator covering 9 kHz to 6.1 GHz. It is designed as a cost-effective alternative to high-end units, pairing a stabilized OCXO and sub-Hertz frequency resolution with an extensive modulation suite. The compact chassis draws only 12 watts, and optional battery modules make it practical for portable field work.

Three frequency builds match the instrument to the job: the 835-2 reaches 2 GHz, the 835-4 reaches 4 GHz, and the 835-6 covers the full 6.1 GHz span. A single channel keeps the design simple and the price accessible for R&D benches, education labs, and production test.

2Key Features

• Fast switching. 400 microsecond frequency switching time.
• Low phase noise. Excellent SSB phase noise across the band.
• Comprehensive modulation. AM, FM, PM, and high-speed pulse modulation.
• Flexible remote control. LAN and USB standard, GPIB optional.
• USB power sensor input for direct power measurement.
• Trigger and sweep modes for automated test sequences.
• Compact and low-power. 12 watt consumption with optional battery operation.

3Frequency & Output Power

The Model 835 tunes with 0.001 Hz resolution. Choose the build that matches your top frequency:

Standard leveled output power runs from -30 to +17 dBm with 0.01 dB resolution and better than 0.8 dB power accuracy. The PE3 mechanical step attenuator extends the lower limit to -120 dBm for receiver sensitivity testing.

4Phase Noise & Spectral Purity

SSB phase noise measured at 1 GHz:

5Modulation

The Model 835 supports AM, FM, PM, pulse, and chirp modulation. An optional avionics modulation package (VOR/ILS) is available for navigation-signal simulation, and a narrow-pulse option sharpens the pulse path.

• AM amplitude modulation.
• FM frequency modulation.
• PM phase modulation.
• Pulse high-speed pulse modulation.
• Chirp swept-frequency stimulus.
• Avionics (option AVIO) VOR/ILS modulation.

6Frequency Switching & Sweep

Frequency switching time is 400 microseconds. List, frequency, and power sweeps support automated measurement, and the trigger modes coordinate the generator with external instruments.

7Specifications

8Interfaces & Form Factor

The Model 835 is a compact benchtop instrument. Remote control follows SCPI v1999 over Ethernet and USB, with GPIB available as an option. A USB power sensor input supports direct power measurement at the device under test.

For rack integration, the 1URM option adds a 19-inch 1U chassis and the REAR option relocates the output to the rear panel. An OEM board-level package is available for embedded integration.

9Options & Configurations

Accessories

• 19-inch 3U single/dual rackmount kit (P/N 7091)
• Spare power supply (P/N 7134)
• Ruggedized protective bumper (P/N 7144)

10Applications

• Research and development labs
• Education
• Production test and measurement
• Installation and maintenance
• EMC/EMI testing

11Ordering

Specify the frequency build (835-2, 835-4, or 835-6) and append option codes as needed. For a configured quote or a demo unit, contact Berkeley Nucleonics.

Berkeley Nucleonics Corporation · info@berkeleynucleonics.com · 800-234-7858