EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: Hugoneus on November 07, 2022, 04:23:45 pm
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You can watch the video here: [46 Minutes]
youtu.be/qaN1f8G--zc (https://youtu.be/qaN1f8G--zc)
The video description:
In this episode Shahriar looks at the ecosystem of R&S power sensors & power meter. In particular, the NRP Triple-Diode Path Power Sensor & the unique NRQ6 Frequency Selective Power Sensor:
https://www.rohde-schwarz.com/us/products/test-and-measurement/rf-and-microwave-power-sensors/rs-nrpxxs-sn-sn-v-three-path-diode-power-sensors_63493-99587.html (https://www.rohde-schwarz.com/us/products/test-and-measurement/rf-and-microwave-power-sensors/rs-nrpxxs-sn-sn-v-three-path-diode-power-sensors_63493-99587.html)
https://www.rohde-schwarz.com/us/products/test-and-measurement/rf-and-microwave-power-sensors/rs-nrq6-frequency-selective-power-sensor_63493-533642.html (https://www.rohde-schwarz.com/us/products/test-and-measurement/rf-and-microwave-power-sensors/rs-nrq6-frequency-selective-power-sensor_63493-533642.html)
The R&S NRX Power Meter can be used to interface with a wide range of power sensors as well:
https://www.rohde-schwarz.com/us/products/test-and-measurement/power-meter-base-units/rs-nrx-power-meter_63493-533644.html (https://www.rohde-schwarz.com/us/products/test-and-measurement/power-meter-base-units/rs-nrx-power-meter_63493-533644.html)
This review is organized as follows:
00:00 – Introductions.
00:40 – NRP40SN 3-Path Diode Power Sensor hardware overview.
01:21 – Triple-Diode sensor architecture, benefits, principle of operation.
05:59 – Experiment setup, AM modulation glitch, web interface design, power measurements, high-sampling rate, trigger setup, trace view, R&S Power Viewer windows software.
16:17 – NRQ6 Frequency Selective Power Sensor hardware overview.
17:10 – NRQ architecture, principle of operation, advantages & disadvantages, DSP functions.
21:51 – Experiment setup, multi-frequency signal generation & interference, blocker signals.
23:33 – Web GUI interface, Signal Check function, auto-set, IF BW setup, I/Q, trace view, attenuation & averaging, blocker signal impact, catching frequency hopping events, ACLR measurements, additional features.
37:19 – NRX Power Meter overview & teardown.
40:49 – Experiment setup, input VSWR & power amplifier output power measurement.
40:01 – NRX GUI, multi-sensor measurement, sensor setups & measurement features.
45:48 – Concluding remarks.
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Someone asked me if connecting to the NRQ6 to the NRX gives you the frequency selectivity, the short answer is yes. But I could not find any control over the IF BW in the GUI of the NRX. I will asked R&S as well.
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These are really cool! I wonder what factors go in to making a receiver capable of competing with traditional power sensors on accuracy and stability. Getting rid of YIGs is probably the bulk of it, and then at the very least a lot of validation... but I wonder what else there is. Just how far could one go with a calorimeter, some good attenuators, and a batch of RTL-SDRs? Not to 40GHz, but it might be a fun project.
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These are really cool! I wonder what factors go in to making a receiver capable of competing with traditional power sensors on accuracy and stability. Getting rid of YIGs is probably the bulk of it, and then at the very least a lot of validation... but I wonder what else there is. Just how far could one go with a calorimeter, some good attenuators, and a batch of RTL-SDRs? Not to 40GHz, but it might be a fun project.
The frequency planning, filtering and dynamic range considerations would certainly be fun to do. I always really like new product categories.