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PX12 coaxial direct reading frequency meter
1、 Overview
PX12 coaxial direct reading frequency meter500MHz～4GHzIn microwave testing of frequency bands, it can be used as a testing frequency or connected to the system for frequency monitoring.
2、 Main technical indicators
1. Operating frequency range:500MHz～4GHz.
2. Calibration error of frequency meter: not greater than0.3%.
3、 Structure and Instructions for Use
1. The PX12 coaxial direct reading frequency meter is composed of a coaxial transmission line and a coaxial cavity (capacitive load type), using a strip line loop to serve as both input and output coupling.
The coaxial inner conductor is driven by a lead screw and a female wire, and the reading sleeve rotates synchronously with the coaxial inner conductor.
2. PX12 coaxial direct reading frequency meter absorbs during resonance30%The above power (in500MHz～0.8GHzRange15%Above). Especially suitable for microwave scanning frequency testing, there is a clear absorption peak on the fluorescent screen. Due to strong coupling, a certain isolation device needs to be connected in series at the input end.
4、 Maintenance and repair
1. The PX12 coaxial direct reading frequency meter is an absorption type. When checking and using it, the detector should be adjusted to the position where the indicator reads the valley value after a good match, which is the frequency point.
2. When the frequency meter is not in use temporarily, it should be covered to prevent dust layer. When it is not in use for a long time, the coaxial joints at both ends should be covered with a plastic cover and placed in a storage box.
3. The PX12 coaxial direct reading frequency meter is designed to prevent impact and drop, in order to prevent the transmission part from obstructing and deforming, resulting in reduced accuracy and unsmooth transmission.
4. When the rotary transmission mechanism exceeds the effective stroke to the collision brake position, it should not be rotated forcefully again to avoid damaging the collision brake and the linkage device, which is not synchronized with the resonance chamber piston, and causing frequency point displacement. In severe cases, it may become unusable and require recalibration.
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