Picotest
Picotest J2140A Attenuator
Picotest J2140A Attenuator
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Key Features
- 20 dB attenuation for precise signal reduction
- Wide bandwidth: DC-2GHz for versatile application
- 50Ω impedance for seamless integration
- SMA connectors ensure reliable connections
- Compact aluminium housing: 25.4 x 25.4 x 16.8 mm
- High power rating: 2W CW, 100W peak (1µs pulse)
- Ideal for oscilloscope and spectrum analyser measurements
Overview
The Picotest J2140A is a high-precision 20 dB attenuator designed for power integrity measurements. This professional-grade tool boasts a wide bandwidth of DC-2GHz, making it ideal for accurate signal attenuation in various electronic design applications. With its 50Ω impedance and SMA connectors, the J2140A seamlessly integrates into existing test setups.
Engineered for reliability, the J2140A features a rugged aluminium housing that ensures durability and longevity. Its compact size of 25.4 x 25.4 x 16.8 mm allows for easy integration into tight spaces, while the gold-plated SMA connectors provide excellent signal integrity. The attenuator's high power rating of 2W CW and 100W peak (1µs pulse) makes it suitable for a wide range of power integrity testing scenarios.
Professional design engineers will appreciate the J2140A's versatility in applications such as oscilloscope and spectrum analyser measurements, as well as its compatibility with various Picotest injectors and analysers. This attenuator is an essential tool for achieving precise and reliable power integrity measurements in complex electronic designs.
There are two common uses for attenuators when used in conjunction with the network analyzer. One is to attenuate the oscillator source signal. While this may seem odd, one of the most common errors in analyzer measurements is using a source signal that is too large. Even though the analyzer allows setting of the signal output amplitude, the lowest setting is often too high to allow an accurate small-signal measurement to be made. The correct amplitude is the smallest amplitude that exceeds the noise floor.
Attenuators are also useful for improving the dynamic range of the measurement. In some cases, as in measuring the open loop gain of an opamp as one example, the low frequency loop gain will be extremely large (100dB or more is not uncommon). Attenuating the output signal increases the effective range of the measurement.
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