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[82.70.254.222]) by smtp.gmail.com with ESMTPSA id s206sm27175wme.4.2018.01.31.07.36.48 (version=TLS1 cipher=AES128-SHA bits=128/128); Wed, 31 Jan 2018 07:36:49 -0800 (PST) Date: Wed, 31 Jan 2018 15:36:47 +0000 From: Chris Wilson X-Priority: 3 (Normal) Message-ID: <1463443222.20180131153647@gmail.com> To: LineOne CC: dead.fets@gmail.com In-Reply-To: References: <1371247928.20180126134524@gmail.com> <2960070.Q1UJDuno2A@x220> <2496850.J398JjXP83@x220> <1748837630.20180131150955@gmail.com> MIME-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hello Andy, That's good to know and the lead lengths are a bit (possibly a lot...) excessive, so grounds are scattered. I have a few DIP dividers to play with on the breadboard so I don't scrap another PCB getting it to perfection. Thanks, divider next then hopefully it will all be OK when it's built up properly! The MF one does a very good job for what it cost. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (dead.fets[at]gmail.com) 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 6ffbd2c9950b634d6cc91f9565b01a8b Subject: Re: LF: Softrock RX divider IC problem, unexpected frequency out Content-Type: text/plain; charset=utf-8 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=PRIORITY_NO_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by klubnl.pl id w0VFgKkh028176 Hello Andy, That's good to know and the lead lengths are a bit (possibly a lot...) excessive, so grounds are scattered. I have a few DIP dividers to play with on the breadboard so I don't scrap another PCB getting it to perfection. Thanks, divider next then hopefully it will all be OK when it's built up properly! The MF one does a very good job for what it cost. Wednesday, January 31, 2018, 3:31:16 PM, you wrote: > If you only have supply of 0/5V you cannot have a negative '0' level.    > If your scope shows it, then it is possible your scope ground is > not connected properly yo the -ve rail but instead to somehting > further back showing a small 0.5V drop > or  teh scope needs setting up > Don't worry about it.  The wqaveform looks perfect - very nearly > 1:1 square wave - its what happens when you do a design properly > Now worry about sorting out the divider. > Andy -- Best regards, Chris mailto:dead.fets@gmail.com