General Radio Company C-10-H Frequency Standard
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Modelo:
C-10-H
Fecha:
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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.
Type manuel:
Servicio y Manual del usuario
Páginas:
16
Tamaño:
10.72 Mbytes (11244217 Bytes)
Idioma:
english
Revisión:
Manuel-ID:
527-C
Fecha:
Formato:
Documento Scaned, todo legible.
Fecha de subida:
2016 12 30
MD5:
949b2299e78a9b05624ca73130a53f93
Descargas:
540