Why is there no mic transmitter on? The RF level of background noise is meaningless without a reference to what the mic transmitter is putting out. The "level" on the vertical axis does not represent normal RF type levels, which would have noise in the -100dB to -80dB range and mic transmitters in the -60dB to -20dB range. What does that scale represent?Mac
It looks to me like WSM is using 'absolute numbers' , albeit they may not be referenced to some existing standard, they still appear consistent between all graphs. Therefore using these graphs to compare the noise (relative to the fixed squelch setting) introduced by the three different AP devices , and to compare the different physical positions (console, floor, next room) appears to be a valid analysis.
Hi,Racking up our Senn. G3 receivers into 4-way racks I'd like to connect the ethernet management ports into a 5-way hub (1 in, 4 out) for quick setup.. and ideally one with a built in wireless AP like the TP-Link TL-WR743 or similar.Should I be concerned about RF noise? .. is placing an ethernet switch or AP very close to a bunch of receivers likely to cause issues? 1 -has anyone had problems?2 - any recommended make / models - We use Apple Airport Express in back of our M7's & LS9's for the audio port.. but obviously need something with at least 5 ports for a 4-way Senn RX rack... would a metal-cased unit like the Netgear Pro range help reduce noise?3 - should i steer clear, use longer UTP cables and have a simple hub sat a few feet away?Thanks.gh
I put a small 5 port Belkin router in the back of the rack. The antennas for the splitter are the little whips that came with it, mounted on the front of the rack. Never had a problem. 4 short Ethernet runs from the router to the receivers, 1 short run to an EtherCon jack on the back of the rack to get to the outside world.
A competent RF tech would easily spot that the Sennheiser G3 and 2000 systems use dBuV in their rf signal strengt metres, why is that not normal rf type levels?The top of the scale is 40dBuV = 100uV = -67 dBm in a 50 ohm system.I agree that the scale should go higher, at least 50 dBuV
A competent RF Tech doesn't make assumptions based on the look of the scale. For example: WinRadio's SA window shows the same scale reference as WSM, yet when you look in the WinRadio manual, it says, "dB above the noise floor of the hardware." If the user made the same assumption you described, his measurements would be inaccurate.
I didnt guess it by looking at the scale, but by seeing the tech data, that show the squelch to be adjustable from 5-25 dBuV, which corresponds with how the squelch treshold is displayed on the meter.
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