Контакты - Россия
#31
С трешхолдом мы игрались, не помогло. Видимо в выходные придётся устранить постоянную составляющую. Мы занимаемся приёмом снимков Земли с метеорологических спутников. Интересно сопоставлять молнии со снимками. Посмотреть снимки можно здесь http://meteosputnik.ru/item236
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#32
Somebody do a good translation for me?

I'm concerned about that GPS Splitter, and it's interconnection.. Blue should have a separate GPS antenna. Also there would appear to be a shared power source?  Can't tell from the images... Bliue uses both virtual grounds, and common, and should be isolated. There should generally be no other grounds connected except in extreme cases. There is for sure another ground on that GPS splitter shield. I don't believe the controller is initializing because of that GPS hookup.

Mike


Stations: 689, 791, 1439, 3020
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#33
Мог бы кто-нибудь показать как выглядит график в браузере в рабочем режиме с галочкой Noise floor?
Can someone show "Live signal" from browser with "Noise floor" checkbox?
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#34
Попробуйте зарядку от телефона для питания платы и закажите GPS антенну из Китая. Еще можно приобрести ферритовые стержни и намотать на них медную проволоку и закрепить изолентой или термоусадкой потом подключить к плате предварительного усилителя H1 если такая имеется.
Должно помочь!
Или вы хотите интегрировать станцию с другим оборудованием?
Stations: 1684, 2917
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#35
(2017-09-19, 12:49)sergey Wrote: Мог бы кто-нибудь показать как выглядит график в браузере в рабочем режиме с галочкой Noise floor?
Can someone show "Live signal" from browser with "Noise floor" checkbox?


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Stations: 689, 791, 1439, 3020
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#36
Thank you! good picture
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#37
(2017-09-19, 12:06)Cutty Wrote: Somebody do a good translation for me?

I'm concerned about that GPS Splitter, and it's interconnection.. Blue should have a separate GPS antenna. Also there would appear to be a shared power source?  Can't tell from the images... Bliue uses both virtual grounds, and common, and should be isolated. There should generally be no other grounds connected except in extreme cases. There is for sure another ground on that GPS splitter shield. I don't believe the controller is initializing because of that GPS hookup.

Mike

Translation to sergey & evgenyr:
Cutty пишет, что беспокоится о GPS-сплиттере. Станция нуждается в отдельной (изолированной от земли) GPS антенне. Также у него вызывает беспокойство общий источник питания. Система использует как "виртуальную", так и "реальную" землю и должна быть изолирована от земли. Никакого заземления  (кроме случаев, угрожающих жизни). Уверен - оплетка на GPS кабеле заземлена.
Stations: 1985
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#38
А постоянная составляющая у всех 0,03В - так должно быть?
Do all devices have 0.03V in constant component? or voltage may be another?
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#39
1- станция не нуждается в отдельной GPS антенне, 2- источники питания раздельные, 3- система обязательно должна быть заземлена, а в остальном всё правильно :-)
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#40
(2017-09-19, 12:06)Cutty Wrote: Somebody do a good translation for me?

Mike

eugenyr & sergey wrote that GPS is working good. All of satellites are recogized by system blue. Blue led "GPS" blinking shortly. Sometimes (not often) system loses 1 pps signal. In that time buzzer sounds low tone. Coordinates recieved by system is absolutely correct. Way of GPS signal is : ANTENNA (on the roof) - LOW-NOISE INDUSTRIAL PREAMP - SPLITTER -STATION.
E-field antenna (1 meter wire) also placed on the roof. Way of E-field signals is : ANTENNA - 1 meter of hi-quality COAXIAL CABLE - SYSTEM BLUE'S PREAMPLIFIER - x meters of hi-quality COAXIAL CABLE - STATION. Preamps led glow red. 
When eugenyr & sergey connect to E-Field preamp's socket a 7-meter wire, noises observed by Web-interface and oscilloscope are dramatically increased. Inserting 7-meter wire directly to an System'B E-field socket will reduce a nosie.
Obviously all of components are correct installed and working good.
Also as an experiment eugenyr & sergey hooked up back 1-meter wire roof antenna. They observed by oscilloscope an automatic gain control: 10s Hi-Gain -> 10s Mid-Gain -> etc. If a System'b registered an E-Field impulses (in automatic mode), then gain factor becomes equal tio 1. That mean is controller also good recognized electromagnetic impulses and responding appropriately.
Not shure it is a good translation Huh

By the way eugenyr & sergey concerned about level of shifting signals. Constant component of measured signal is +0.66v (sic!).
Maybe here is the cause of fault?
Stations: 1985
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