B & K Precision Corp.
Yorba Linda, CA 92887
Jun 09, 2008 Measuring 4 x 1.8 x 9 in. and weighing less than 2.0 lb, Model 2640 features frequency range of 100 kHz to 2,000 MHz, noise floor of -110 dBm to detect weak signals, and basic spectrum analyzer functionality. It has 2 GHz frequency counter, phase-locked loop for precise frequency tuning, detachable antenna, and back-lit display. Meter supports RS-232C serial communication, detects wide band and narrow band FM, AM, and SSB signals, and scans and displays up to 160 channels.

Trek, Inc.
Medina, NY 14103 0728
Dec 06, 2001 The Model 542 Electrostatic Voltmeter provides accurate non-contacting measurements of electrostatic surface voltage associated with EOS/ESD sensitive processes. It uses a DC stable electrostatic field chopper probe, available as a side viewing probe or a 45° angle viewing probe. An alphanumeric LCD screen displays present measured voltage, positive peak voltage, negative peak voltage, and additional menu information. The Model 542 voltmeter, from Trek Incorporated, has a measurement range of 0 to ± 10 kV, with accuracy of 5% of reading, ± 20V. It is suitable for semiconductor, LCD, and electronic assembly applications.