Informações sobre o equipamento:

Hewlett Packard 312D Medidor de Nível
Hewlett Packard
Modelo: 312D
Data: 1975
Categoria: Instrumentos de medição
Grupo: Medidor de Nível
Descrição: Selective Volt/Level Meter
                                    The Model 312B measures the amplitude and frequency of
signal components from 1 kHz to 18 MHz. It is calibrated to
read amplitude in terms of power referenced to commonly used
impedances. Frequency components are separated through the
use of selectable bandpass filters. The frequency of the
measured signal is displayed by a digital LED display.

The input can be applied either through a BNC connector or
through the 11530A Probe. The input circuits of the 312B
contain a reference level attenuator that limits the input
signal to a level necessary to prevent overloading of the
input Amplifier. Refer to Paragraphs 3-10 and 3-12 for the
procedure for setting the attenuator to prevent overloading
and to optimize signal-to-noise ratio.

The 312B will make both balanced and unbalanced
measurements. These measurements can be made in either
terminated or unterminated (bridged) modes. There are seven
selectable impedances in the terminated mode; 50 ohms, 60
ohms, 75 ohms, 124 ohms, 135 ohms, 150 ohms, and 600 ohms.
When in the bridged mode, the nominal input impedance is 10
kilohms in the unbalanced mode and 20 kilohms in the
balanced mode.

There are three selectable bandwidths. The 3100 Hz bandwidth
is provided for amplitude modulated (AM) and single sideband
(SSB) measurements and for ease in tuning. The 1000 Hz
bandwidth simplified calculation of noise
power per hertz of bandwidth- The 200 Hz bandwidth permits
separation of closely spaced signals and precise frequency

Estes manuais estão disponíveis para os equipamentos acima:

Tipo manual: Serviço e Manual do Usuário HewlettPackard-4919-Manual-Page-1-Picture
Páginas: 255
Tamanho: 106.16 Mbytes (111321312 Bytes)
Idioma: Inglês
Manual-ID/Number: 00312-90046
Data: Fevereiro 1975
Qualidade: Documento Scaned, a leitura parcialmente mal, não parcialmente legível.
Envie data:
MD5: 6d133b085202b16107c5d0f68be0518e
Downloads: 381 desde 24 Novembro 2013
Serial Numbers: 312B-1534A00401 312D-1523A00101

This manual contains operating, applications, and servicing
information for the Hewlett-Packard Models 312B Selective
Voltmeter and the 312D Selective Level Meter. 

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