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App\Entity\Entry {#1568
+user: App\Entity\User {#261 …}
+magazine: Proxies\__CG__\App\Entity\Magazine {#1736 …}
+image: null
+domain: Proxies\__CG__\App\Entity\Domain {#1686 …}
+slug: "Siglent-SDS1104XE-slanted-square-wave"
+title: "Siglent SDS1104XE: slanted square wave"
+url: "https://imgur.com/a/T6tM0HB"
+body: """
Hi!\n
\n
I’ve asked Siglent support but after a couple of responses the thread went cold. Maybe I’m being dumb but I’ve noticed that there’s a frequency (low, around 100Hz) where scope response changes a bit. Below and above it square input looks square. Right about it square input looks slanted.\n
\n
I tried to do a very slow “sweep” and there’s small but visible change in the envelope. So, e.g. with a constant 600mV p2p input lower frequencies measure exactly that while higher ones measure 612mV, so ~2% diff.\n
\n
Terminated 50Ohm cables (not that it matters at such a low freq) to be sure. Latest firmware, after full self-cal. Siggen itself seems allright, I have an ancient Tek scope and the siggen output looks Ok there with same input/same cables. Scope seems happy and fully functional otherwise, few years old though, out of warranty.\n
\n
Has anyone else seen anything like that? Is this a normal behavior within the expected margin of error?\n
\n
Thanks!
"""
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date: 2023-10-22 19:27:42.0 +02:00
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+visibility: "visible "
+apId: "https://discuss.tchncs.de/post/4667130"
+editedAt: DateTimeImmutable @1697201697 {#1640
date: 2023-10-13 14:54:57.0 +02:00
}
+createdAt: DateTimeImmutable @1697201545 {#1423
date: 2023-10-13 14:52:25.0 +02:00
}
} |
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App\Entity\Entry {#1568
+user: App\Entity\User {#261 …}
+magazine: Proxies\__CG__\App\Entity\Magazine {#1736 …}
+image: null
+domain: Proxies\__CG__\App\Entity\Domain {#1686 …}
+slug: "Siglent-SDS1104XE-slanted-square-wave"
+title: "Siglent SDS1104XE: slanted square wave"
+url: "https://imgur.com/a/T6tM0HB"
+body: """
Hi!\n
\n
I’ve asked Siglent support but after a couple of responses the thread went cold. Maybe I’m being dumb but I’ve noticed that there’s a frequency (low, around 100Hz) where scope response changes a bit. Below and above it square input looks square. Right about it square input looks slanted.\n
\n
I tried to do a very slow “sweep” and there’s small but visible change in the envelope. So, e.g. with a constant 600mV p2p input lower frequencies measure exactly that while higher ones measure 612mV, so ~2% diff.\n
\n
Terminated 50Ohm cables (not that it matters at such a low freq) to be sure. Latest firmware, after full self-cal. Siggen itself seems allright, I have an ancient Tek scope and the siggen output looks Ok there with same input/same cables. Scope seems happy and fully functional otherwise, few years old though, out of warranty.\n
\n
Has anyone else seen anything like that? Is this a normal behavior within the expected margin of error?\n
\n
Thanks!
"""
+type: "link"
+lang: "en"
+isOc: false
+hasEmbed: true
+commentCount: 6
+favouriteCount: 4
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date: 2023-10-22 19:27:42.0 +02:00
}
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+tags: null
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+comments: Doctrine\ORM\PersistentCollection {#1691 …}
+votes: Doctrine\ORM\PersistentCollection {#1795 …}
+reports: Doctrine\ORM\PersistentCollection {#1616 …}
+favourites: Doctrine\ORM\PersistentCollection {#1717 …}
+notifications: Doctrine\ORM\PersistentCollection {#1714 …}
+badges: Doctrine\ORM\PersistentCollection {#2458 …}
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-titleTs: "'sds1104xe':2 'siglent':1 'slant':3 'squar':4 'wave':5"
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+cross: false
+upVotes: 0
+downVotes: 0
+ranking: 1697239545
+visibility: "visible "
+apId: "https://discuss.tchncs.de/post/4667130"
+editedAt: DateTimeImmutable @1697201697 {#1640
date: 2023-10-13 14:54:57.0 +02:00
}
+createdAt: DateTimeImmutable @1697201545 {#1423
date: 2023-10-13 14:52:25.0 +02:00
}
} |
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moderate
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App\Entity\Entry {#1568
+user: App\Entity\User {#261 …}
+magazine: Proxies\__CG__\App\Entity\Magazine {#1736 …}
+image: null
+domain: Proxies\__CG__\App\Entity\Domain {#1686 …}
+slug: "Siglent-SDS1104XE-slanted-square-wave"
+title: "Siglent SDS1104XE: slanted square wave"
+url: "https://imgur.com/a/T6tM0HB"
+body: """
Hi!\n
\n
I’ve asked Siglent support but after a couple of responses the thread went cold. Maybe I’m being dumb but I’ve noticed that there’s a frequency (low, around 100Hz) where scope response changes a bit. Below and above it square input looks square. Right about it square input looks slanted.\n
\n
I tried to do a very slow “sweep” and there’s small but visible change in the envelope. So, e.g. with a constant 600mV p2p input lower frequencies measure exactly that while higher ones measure 612mV, so ~2% diff.\n
\n
Terminated 50Ohm cables (not that it matters at such a low freq) to be sure. Latest firmware, after full self-cal. Siggen itself seems allright, I have an ancient Tek scope and the siggen output looks Ok there with same input/same cables. Scope seems happy and fully functional otherwise, few years old though, out of warranty.\n
\n
Has anyone else seen anything like that? Is this a normal behavior within the expected margin of error?\n
\n
Thanks!
"""
+type: "link"
+lang: "en"
+isOc: false
+hasEmbed: true
+commentCount: 6
+favouriteCount: 4
+score: 0
+isAdult: false
+sticky: false
+lastActive: DateTime @1697995662 {#1442
date: 2023-10-22 19:27:42.0 +02:00
}
+ip: null
+adaAmount: 0
+tags: null
+mentions: null
+comments: Doctrine\ORM\PersistentCollection {#1691 …}
+votes: Doctrine\ORM\PersistentCollection {#1795 …}
+reports: Doctrine\ORM\PersistentCollection {#1616 …}
+favourites: Doctrine\ORM\PersistentCollection {#1717 …}
+notifications: Doctrine\ORM\PersistentCollection {#1714 …}
+badges: Doctrine\ORM\PersistentCollection {#2458 …}
+children: []
-id: 4958
-titleTs: "'sds1104xe':2 'siglent':1 'slant':3 'squar':4 'wave':5"
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+cross: false
+upVotes: 0
+downVotes: 0
+ranking: 1697239545
+visibility: "visible "
+apId: "https://discuss.tchncs.de/post/4667130"
+editedAt: DateTimeImmutable @1697201697 {#1640
date: 2023-10-13 14:54:57.0 +02:00
}
+createdAt: DateTimeImmutable @1697201545 {#1423
date: 2023-10-13 14:52:25.0 +02:00
}
} |
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Show voter details
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