the Model 427A may be powered either by a 115 or 230 volt line or by an internal 22-1/2 volt dry cell battery. 1-3. The use of solid state components throughout gives the Model 427A both ruggedness and reliability. Battery operation makesthe instrument ideal for field use or isolation from common mode ground loops. 1-4.

View and Download HP 427A operating and service manual online. VOLTMETER. 427A measuring instruments pdf manual download.

Introduced in the 1966 general catalog, the HP 427A is a fully-portable laboratory-grade instrument, useful from 1 Hertz to 4 megahertz in AC mode, at levels to below 1 millivolt. It is also a sensitive DC Voltmeter and Ohmmeter.

The Hewlett-Packard Model 427A is a versatile, compact, self-contained voltmeter. It is capable of making dc measurements from 1 mV to 1000 volts, ac measurements from O. 3mVto 300 volts at frequencies from 10 Hz to 1 MHz, and resistance measurements from 0.2 ohms to 500 megohms.

The HP 427A Voltmeter is a versatile, compact, self-contained voltmeter. It is capable of making dc measurements from 1 mV to 1000 volts, ac measurements from 0.3mV to 300 volts at frequencies from 10Hz to 1MHz, and resistance measurements from 0.2 ohms to 500 megohms.

1-2. The Hewlett-Packard Model 427A is a versatile, compact, self-contained voltmeter. It is capable of making dc measurements from 1 mV to 1000 volts, ac measurementsfromO. 3mVto300volts at frequencies from 10 Hz to 1 MHz, and resistance measurements from 0. 2 ohms to 500 megohms. With the 01 option, the Model 427A may be powered either by a ...

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2013年7月25日 · I purchased an HP 427A voltmeter from eBay but it's not working. Inspection showed that Q6, an SU527 from Siliconix, had one lead connected to the circuit board, one lead floating in air, and the third lead broken off flush with the case.

Download HP-427A 0,1-1000V 1MHZ VOM 1970 SM service manual & repair info for electronics experts

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