BK Precision 2650A Spectrum Analyzer

BK Precision 2650A Spectrum Analyzer

Welcome to a Biomedical Battery specialist of the Panametrics Battery

The BK Precision 2650A is a compact, light weight and cost-effective spectrum analyzer for quick and precise signal investigations, especially away from the bench. At a weight of only 4 pounds (1.8 kg), this spectrum analyzer with battery such as Panametrics Magna-Mike 8500 Battery, Panametrics KR1800SCE Battery, NetTEST Battery, Tektronix REI DPA-7000 Battery, Tektronix TPS2000B Battery, Tektronix TPS2012B Battery, Tektronix TPS2014B Battery, Tektronix TPS2024B Battery, TSI TSI8532 Battery, TSI EP-03750 Battery, YUT Battery, YUT DR-202S Battery is by far the lightest full-featured spectrum analyzer available, yet it delivers performance and features comparable to a full-size bench spectrum analyzer and can operate up to 4 hours on a single battery.

With its ease of use, measurement flexibility and unmatched portability, the BK Precision 2650A spectrum analyzer is an indispensable tool for engineers and technicians who conduct field measurements in the 50 kHz to 3.3 GHz range.

Versatile measurement functions

Channel power measurement

Allows you to measure the total power or noise power in a user-specified bandwidth.

Adjacent channel power

Measure the ratio of power leakage (from the wanted signal) into adjacent channels. Center frequency, adjacent channel bandwidth, and offset between main carrier and adjacent channels can be set.

Users can select from any of the following three measurement methods based on the reference carrier definition: total power (of displayed spectrum), peak power (reference level) and in-band power (user-specified band width).

Occupied Bandwidth

This measurement calculates the bandwidth containing the total integrated power occupied in a given signal bandwidth. Two measurement methods are available: The user can specify N% of total power or the X dB down point relative to the carrier peak level.

Electric field strength measurement

A dipole antenna (options M401 – M406) connected to the RF input enables the measurement of electric field strength. Users can choose from 6 antennas based on the frequency range under investigation. Each antenna’s resonance point is optimized for the frequency spectrum of a specific wireless standard:
•M401 is suitable for GSM 850/900
•M403 for W-CDMA and GSM 1800/1900
•M404 for 2.4 GHz wireless LAN and Bluetooth
•M406 for 5 GHz wireless LAN

Combined with the MAX HOLD function and a 10 ms sweep time, the M404 dipole antenna is capable of measuring the electric field strength of Bluetooth systems and systems using direct sequence spread spectrum/frequency hopping modulation techniques.

Using multiple dedicated dipole antennas leads to better measurement results compared to the conventional method of using only a single wide band antenna in which case the frequency range under investigation is typically located far away from the antenna's resonance point, resulting in poor dynamic range. Measuring at or near the resonance point where the antenna gain is at a maximum translates into high dynamic measurement range.

Since the antenna gain factor compensation data is preloaded into the analyzer, the field strength is displayed directly in dBuV/m. The analyzers also support downloading of user-defined gain factor tables for custom antennas.

Magnetic field strength measurement

Using a magnetic field probe (option PR 26M), the 2650A series is capable of accurately measuring the magnetic field distribution on a PCB (printed circuit board) or IC (integrated circuit). The magnetic field strength detector inside the probe consists of a shielded loop structure using a glass ceramic multi-layer board technology with high frequency characteristics.

This enables the detection of magnetic field components only. The probe can measure over a wide frequency range of 10 MHz to 3 GHz. Since the probe’s compensation data is already preloaded into the analyzer, the magnetic field strength is displayed directly in dBuA/m.

Typical applications of this magnetic field probe are evaluation of the effectiveness of a bypass capacitor located near the power supply terminal of an IC or evaluation of the microstrip layout on a PCB. Due to the probe’s high spatial resolution (approximately 0.25 mm), it is not affected by adjacent patterns.