- Buyers Guide
Portable Spectrum Analyzer
The SCOPE 4600 series portable spectrum analyzer is designed for convenient measurements in the field, mobile test setups and in test laboratories. The unit also is suited for broadband measurements with selectable resolution bandwidths up to 1000 MHz. The analyzer features a lighted graphical liquid-crystal display, built-in batteries and charger, a PC interface (via RS232) and a broadband signal source (noise generator). The unit operates from 100 kHz to 1 GHz ±2 dB with a 12 V DC/600 mA power supply with a maximum RF input level of +5 dBm; 23 dBm to avoid damage and minimum input level of –80 dBm at ±50 kHz resolution bandwidth. Size: 22 x 10 x 4 cm.
Beltsville, MD (301) 937-8888.
The ML2430A series power meters combine the inherent advantages of thermal-based, diode-based CW and diode-based peak power meters, resulting in a single instrument that can measure 10,000 readings per second with stable power readings at less than –70 dBm. The MA2470A series power sensors operate with a true 90 dB dynamic range, reaching stable power readings at less than –70 dBm. Measurement mismatch is good through 60 GHz. Prices: start at $3400. Delivery: six to 10 weeks.
Morgan Hill, CA (408) 778-4061.
CDMA Pilot Scanner
The Scout series pilot scanner surveys all CDMA pilot channel signals and reports their power delay profile in real time. The power delay profile represents the base station pilot power from both direct and multipath signals from all base stations and indicates the distribution of pilot power vs. delay. The unit measures pilot strength (Ec in dBm), noise (Io in dBm) and Ec /Io for all direct and multipath pilot signals. The scanner features custom highly pipelined hardware for fast real-time measurements and is packaged in a mobile case for field measurements.
Berkeley Varitronics Systems,
Metuchen, NJ (908) 548-3737.
RF Peak Power Meter
The model 4400A RF peak power meter performs highly accurate time-domain measurements over the 1 MHz to 40 GHz frequency range. The unit features a peak power dynamic range of greater than 60 dB without any range changes and performs pulse measurements from –40 to +20 dBm, and CW measurements from –50 to +20 dBm with 0.1 dB resolution. The unit uses a random repetitive sampling system to perform waveform averaging continually from 1 to 10,000 samples per data point. The continuous signal processing allows for pre- and post-trigger analyses.
Boonton Electronics Corp.,
Parsippany, NJ (201) 386-9696.
Circuit Board Tester
The model 0601 circuit board tester is the latest in a series of noninvasive dielectrometers for measurement of DK and DF in circuit board materials and thin dielectric sheets. The tester provides a fast measurement of in-plane parameters with good repeatability and can be used with a scalar analyzer. The unit features a two-octave operating bandwidth from 1 to 4 GHz. The first resonance is 1 GHz in the middle of the bands used for cellular phone, PCS and Global Positioning Satellite (GPS) communications. Other models are available for operation up to 17 GHz.
Concordville, PA (610) 358-0200.
500 MHz Combination Analyzer
The model HP 4395A 500 MHz combination analyzer provides network, spectrum and optional impedance-measurement functions in a single instrument and reduces test costs without compromising performance. For vector network analysis, the high accuracy of ±0.05 dB, ±0.3° and wide dynamic range of greater than 110 dB ensure quality test results. Fast measurement speed allows engineers to tune components and view test results in real time. For spectrum analysis, the unit’s digital signal processing techniques improve amplitude accuracy and sweep speed. Price: starts at $26,500.
Palo Alto, CA (800) 452-4844, ext. 5434.
CW Power Meter
The model 9000A power meter (when used with the 9500 series power sensors) serves as a low cost CW power measurement system covering a frequency range of 100 kHz to 26.5 GHz. A 10 MHz to 40 GHz power sensor will be available in the near future. The unit combines fast measurement speed, accuracy and dynamic range of –39 to +20 dBm, and operates for 12 hours on internal rechargeable batteries.
Sunnyvale, CA (408) 734-5999.
DDS Evaluation System
The model Q0340-2 direct digital synthesizer (DDS) evaluation system is designed to demonstrate the capabilities and operating modes of the model Q2240I-2S1 DDS IC on a compact, 3.5" x 6.5" PCB. The DDS system comprises the Q2240I-2S1 IC coupled with a 12-bit digital-to-analog converter, onboard 100 MHz oscillator and analog output circuitry to provide optimum DDS performance, software and cabling. The system allows users to speed integration of the Q2240I-2S1 into designs and evaluate the IC as a 5 V device operating at a maximum clock frequency of 100 MHz or as a 3.3 V device operating at a maximum clock frequency of 60 MHz. Price: $295.
San Diego, CA (619) 587-1121.
Waveguide Calibration Kits
These gold-standard, waveguide calibration kits are designed for use with vector automatic network analyzers from –1 to +40 GHz. The kits provide all the components necessary to calibrate a network analyzer for waveguide measurements. All kits are suitable for OOL, TRL and LRL configurations by providing a complete set of offsets, terminations and shorts. Waveguide to coaxial adapters are standard in all kits. In addition, the kits are supplied in a quality case complete with hardware, a data disc and a handbook.
Quasar Microwave Technology Ltd.,
Newton Abbot, Devon, UK (01626) 834222.
These passive intermodulation analyzers are designed for testing in the US cellular, European Global System for Mobile communications, digital communications system 1800 and PCS 1900 wireless bands. The analyzers’ highly integrated design, extensive test capability and ease of use allow for practical and affordable measurements.
Summitek Instruments Inc.,
Englewood, CO (303) 768-8080.
EMI Test Receiver
The model ESCS 30 EMI test receiver manufactured by Rohde & Schwarz provides a portable solution for commercial EMI test requirements. The receiver’s 9 kHz to 2.75 GHz frequency range meets FCC Part 15B requirements, which call for EMI testing to 2 GHz on devices with internal clock rates of 108 to 500 MHz. The unit features an amplitude accuracy of £ 1 dB at 1 GHz, £ 1.5 dB at 2.75 GHz. Price: starts at $44,750. Delivery: six weeks (ARO).
Beaverton, OR (800) 426-2200.
Proactive Network Analyzers
The NetForce series browser-based network analyzers interactively anticipate, identify, and propose solutions to network availability and response time problems before they occur. Designed to maximize the up-time of switched and virtual networks for both the local area and wide area, the analyzers consist of a central platform running on a Java-enabled workstation and sensors distributed throughout a network near end users. The sensors detect problems such as changes in network topology and common network anomalies. Upon receiving the problem data and corresponding decision-support information, the workstation alerts the user of the problem via a pager, e-mail or through a browser-based user interface.
Wandel & Goltermann GmbH & Co.,
Eningen, Federal Republic of Germany +49 7121 86-1616.