874-VR: Difference between revisions
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|codes=COAXRECTOR,0874-9942,0874-9943 | |codes=COAXRECTOR,0874-9942,0874-9943 | ||
|class=coaxial components | |class=coaxial components | ||
|summary= | |summary=Voltmeter rectifier | ||
|image=GR 874-VR-1.jpg | |image=GR 874-VR-1.jpg | ||
|caption=General Radio 874-VR | |caption=General Radio 874-VR | ||
Revision as of 18:49, 16 April 2024
The General Radio 874-VR is a "voltmeter rectifier" with two GR-874 connectors for the signal, and another GR-874 connector for the rectified output.
It is used in frequency response measurements with a 1750-A Sweep Drive and 1263-C Amplitude Regulating Power Supply. An 874-VI Voltmeter Indicator can be used for calibrated measurements from 0.1 to 2 V.
It contains a 1N23B diode and a mica capacitor.
The 874-VRL is identical but has locking 874 connectors.
The 874-VQ is similar to the 874-VR, but omits the 874-VR's 50 Ω series resistor, and includes matching elements to compensate for the discontinuity caused by the diode capacitance.
Key Specifications
- Frequency range: 15 MHz to 2.5 GHz (correction required above 1 GHz)
- Input: 0.1 V to 2 V
- VSWR: ≤1.1 @ 1 GHz, ≤1.2 @ 2 GHz; rising rapidly above 2.5 GHz
- Resonant frequency: 3.8 GHz
Links
- 874-VRL is the locking version.