Coaxial Frequency Meter 537A
Hewlett-Packard, (HP); Palo Alto, CA
- País
- Estados Unidos
- Fabricante / Marca
- Hewlett-Packard, (HP); Palo Alto, CA
- Año
- 1972
- Categoría
- Aparato de medida y servicio (Equipo de laboratorio).
- Radiomuseum.org ID
- 338595
- Principio principal
- RF-Circuit or wave trap (separate, can also be an antenna with amp.)
- Gama de ondas
- Bandas de recepción puestas en notas.
- Tensión de funcionamiento
- No necesita alimentación
- Altavoz
- - - No hay salida de sonido.
- Material
- Metálico
- de Radiomuseum.org
- Modelo: Coaxial Frequency Meter 537A - Hewlett-Packard, HP; Palo Alto
- Forma
- Formas varias descritas en notas aparte.
- Ancho, altura, profundidad
- 118 x 146 x 89 mm / 4.6 x 5.7 x 3.5 inch
- Anotaciones
-
The Hewlett Packard, 537A coaxial frequency meter is used for measuring frequency in the 0.96 to 12.4 GHz range.
Accuracy is obtained from the spiral scale.
The meter contains a coaxial line coupled to a quarter-wavelength coaxial resonant cavity loaded with capacitance at the bottom of the band. At resonance, power is absorbed by the cavity, producing a dip in the coaxial line power.
The frequency at which this dip occurs is read directly from the dial in gigahertz.Tuning is accomplished by moving a piston. A precision lead screw, which is spring-loaded to prevent backlash, is used to position the piston in the cavity.
Due to the design of the cavity, its electrical length is extended at lower frequencies, and there are no spurious modes.
Specifications
Frequency range; 3.7 to 12.4 GHz Reflection coefficient off-resonance: 0.33 (2.0 SWR, 9.5 dB return loss) Calibration increments: 10 MHz Dip at resonance: 1 dB (minimum)
Dial accuracy: ±0.1% Overall Accuracy: ±0.17% which includes an allowance of ±0.02% for 0 to 100% relative humidity, ±0.0016 per °C from 13 to 33 °C & 0.03% backlash.
- Peso neto
- 3.5 lb (3 lb 8 oz) / 1.589 kg
- Mencionado en
- - - Manufacturers Literature (536A / 537A Coaxial Frequency Meter Operating Note. No. 00536-90001)
- Autor
- Modelo creado por Gary Cowans. Ver en "Modificar Ficha" los participantes posteriores.
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