General Radio Company C-10-H Frequency Standard
Fabricante:
Modelo:
C-10-H
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Descripción:
SECONDARY FREQUENCY STANDARD
Información
The Class C-1O-H Standard consists of: Secondary Frequency 1 - Type 675-P Piezo-Electric Oscillator 1 - Type 676-B Quartz Bar (50 kc) 1 - Type 692-B Multivibrator (50 kc) 1 - Type 692-B Multivibrator (10 kc) 1 - Type 480-B Relay Rack 1 - Set of shielded signal cables 1 - Set of power cables 1.11 Piezo-Electric Oscillator The Type 675-P Piezo-Electric Oscillator, with the Type 676-B Quartz Bar, is the standard-frequency source. This Oscillator includes (1) a piezo-electric Oscillator, (2) a control output Amplifier for supplying a voltage of the Oscillator fundamental frequency to control multivibrators, (3) a harmonic output Amplifier, and (4) an a-c power supply, capable of furnishing cathode and plate power to a maximum of three multivibrators. For a complete description, see "Operating Instructions for Type 675-P Piezo-Electric Oscillator", Form 384-E. 1.12 Multivibrators Two multivibrators are used, one operating at 50 kc, the other at 10 kc. Both are controlled from the "control" output Amplifier in the Oscillator unit. Owing to Its highly distorted waveform, the 50-kc multivibrator supplies usable harmonics for frequency-measurement purposes at frequencies much higher than can be obtained from the harmonic output Amplifier in the Oscillator unit. The 10-kc multivibrator furnishes harmonics spaced at 10-kc intervals for convenient Interpolation in frequency measurement. 1.13 Terminal Plate A terminal plate carrying shielded output plugs provides for connections from the various outputs of the frequency standard to the working circuits. This plate is supplied as part of the cable assembly, which Includes shielded low-Impedance cables for all radio fre- quensy circuits, shielded cable for audiofrequency circuits and power cables for all units. As supplied, the equipment is complete and ready to operate upon connection to the power mains. 1.2 Other Assemblies Other combinations of equipment can be assembled to meet specific requirements. A third multivibrator can be added to supply audio-frequency harmonics, usually of 1 kilocycle. Another possible assembly uses two multivibrators, operating at 10 kc and 1 kc, and a Type 693-B Syncronometer for timing the Oscillator. Still more units can be added, if an external Power supply, such as Type 696-C, is used. The method of operation and use is, In general, the same as that for the stock assembly described here. Details of Instruments and their operation will always be found in the Instruction books for the individual instruments.

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Servicio y Manual del usuario
Type manuel:
Servicio y Manual del usuario
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16
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10.72 Mbytes (11244217 Bytes)
Idioma:
english
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Manuel-ID:
527-C
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Documento Scaned, todo legible.
Fecha de subida:
30 diciembre 2016
MD5:
949b2299e78a9b05624ca73130a53f93
Descargas:
172

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