6821 1 MHz to 3 GHz Scalar Analyzer
6822 10 MHz to 8.4 GHz Scalar Analyzer
6823 10 MHz to 20 GHz Scalar Analyzer
6824 10 MHz to 24 GHz Scalar Analyzer
6825 10 MHz to 46 GHz Scalar Analyzer
The synthesized source has low phase noise and 1 Hz frequency resolution. VCOs are used for frequencies above 3 GHz and an integrated RF synthesizer for the 1 MHz to 3 GHz range. Optionally increased output power is available from 3 to 24 GHz. Internal filtering results in excellent harmonic performance of <-55 dBc for improved scalar measurement accuracy. Optional step attenuators are available to set low output powers for amplifier or receiver testing. In CW mode the source can be used for local oscillator substitution. A power sweep is provided for amplifier gain compression testing. External FM can be applied by connecting a generator to the rear panel. With the FM option, an internal generator provides frequency modulation of the source. When used with the scalar analyzer the source provides a swept synthesized output for frequency characterization of components and systems. The three input scalar analyzer provides network characterization of components and systems. Simultaneous measurement of insertion and return loss are displayed on the 6820 color screen. Excellent measurement accuracy is assured by the use of EEPROM corrected detectors. Each detector is individually characterized for linearity and frequency response to provide a measurement accuracy close to that achieved with a power sensor. A range of autotesters with high directivity is available for return loss measurements. Fault location software is standard on all 6820 series instruments Many modern communication systems rely on a coaxial or waveguide feed between the transmitter and antenna. The fast fault location facility of the 6820 can quickly locate the position of faults causing poor return loss in the feed, which can seriously impact system performance. Measurement resolution and accuracy is assured by the use of a synthesized source with up to 1601 measurement points.