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14 October 2024
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N 04:39 | Signature analysis 6 changes history +3,996 [Peter (6×)] | |||
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04:39 (cur | prev) +576 Peter talk contribs | ||||
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04:21 (cur | prev) +10 Peter talk contribs | ||||
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04:20 (cur | prev) +27 Peter talk contribs | ||||
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04:18 (cur | prev) +11 Peter talk contribs | ||||
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04:15 (cur | prev) +497 Peter talk contribs | ||||
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03:53 (cur | prev) +2,875 Peter talk contribs (Created page with "'''Signature Analysis''' is a method to simplify (field) troubleshooting of complex digital systems, developed at Hewlett-Packard in the early 1970s. The idea is to describe "known good" states of signals in the system – typically when in some diagnostic / troubleshooting mode – as a CRC of that signal, when referenced to a known clock and defined start/stop conditions. The concept was introduced in [https://doc.xdevs.com/doc/HP_Agilent_Keysight/journals/1977-0...") | |||
| N 04:10 | Signature analyzer diffhist +31 Peter talk contribs (Redirected page to Signature analysis) | ||||
| 03:57 | Main Page diffhist +12 Peter talk contribs (→Technical Information) | ||||
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N 03:35 | Category:Signature analysis 2 changes history +81 [Peter (2×)] | |||
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03:35 (cur | prev) +43 Peter talk contribs | ||||
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03:33 (cur | prev) +38 Peter talk contribs (Created page with " Category:Circuits and Concepts") | |||
| N 03:32 | Patent US 3976864A diffhist +533 Peter talk contribs (Created page with "{{Patent |Office=US |Number=3976864A |Title=Apparatus and method for testing digital circuits |Company=Hewlett-Packard |Inventors=Gary B. Gordon;George A. Haag;Jan R. Hofland;Daniel I. Kolody |Filing date=1974-09-03 |Grant date=1976-08-24 |Cites=Patent US 3582633A;Patent US 3651315A;Patent US 3739160A;Patent US 3777129A;Patent US 3780277A;Patent US 3812426A;Patent US 3813647A;Patent US 3821645A;Patent US 3826909A;Patent US 3832535A; }} This is the original HP patent for...") | ||||
| 03:31 | Patent US 4192451A diffhist +117 Peter talk contribs | ||||
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03:31 | Patent US 4527272A 3 changes history +177 [Peter (3×)] | |||
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03:31 (cur | prev) 0 Peter talk contribs | ||||
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03:23 (cur | prev) +35 Peter talk contribs | ||||
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03:23 (cur | prev) +142 Peter talk contribs | ||||
| 03:20 | Patent US 4752928A diffhist +256 Peter talk contribs | ||||
13 October 2024
| 20:04 | 7A12 diffhist +9 Johnaddis talk contribs | ||||
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m 13:44 | Telequipment D61 2 changes history +120 [Julesomega (2×)] | |||
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13:44 (cur | prev) −16 Julesomega talk contribs | |||
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13:41 (cur | prev) +136 Julesomega talk contribs | |||
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12:59 | SA501 5 changes history +931 [Peter (5×)] | |||
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12:59 (cur | prev) +8 Peter talk contribs | ||||
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05:46 (cur | prev) +424 Peter talk contribs | ||||
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04:32 (cur | prev) +431 Peter talk contribs | ||||
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03:48 (cur | prev) +48 Peter talk contribs | ||||
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03:43 (cur | prev) +20 Peter talk contribs | ||||
| 11:35 | Upload log Julesomega talk contribs uploaded File:PC156 main PCB.png (Component side of PC156) | ||||
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08:05 | Telequipment D63 DM63 D75 D83 2 changes history +40 [Julesomega (2×)] | |||
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08:05 (cur | prev) +1 Julesomega talk contribs (link amended) | |||
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07:59 (cur | prev) +39 Julesomega talk contribs (Added TQ S2A timebase) | ||||
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05:51 | P6458 2 changes history +146 [Peter (2×)] | |||
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05:51 (cur | prev) +122 Peter talk contribs | ||||
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03:48 (cur | prev) +24 Peter talk contribs | ||||
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05:45 | IM5610 4 changes history +64 [Peter (4×)] | |||
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05:45 (cur | prev) +38 Peter talk contribs | ||||
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05:29 (cur | prev) +10 Peter talk contribs | ||||
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04:35 (cur | prev) −38 Peter talk contribs (parts have 40/50 ns access time) | ||||
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04:32 (cur | prev) +54 Peter talk contribs | ||||
| 03:37 | P6451 diffhist −35 Peter talk contribs | ||||
| 03:35 | File:Tekscope 1976 V8 N2.pdf diffhist +7 Peter talk contribs | ||||
12 October 2024
| 10:51 | 155-0085-00 diffhist +34 Peter talk contribs | ||||
| 10:50 | 155-0068-00 diffhist +7 Peter talk contribs | ||||
11 October 2024
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20:18 | 7A12 4 changes history +407 [Johnaddis (4×)] | |||
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20:18 (cur | prev) +13 Johnaddis talk contribs | ||||
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20:15 (cur | prev) +30 Johnaddis talk contribs | ||||
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20:09 (cur | prev) +159 Johnaddis talk contribs | ||||
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20:03 (cur | prev) +205 Johnaddis talk contribs | ||||
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17:04 | 7A26 3 changes history +67 [Johnaddis (3×)] | |||
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17:04 (cur | prev) −2 Johnaddis talk contribs | ||||
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17:02 (cur | prev) −7 Johnaddis talk contribs | ||||
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17:01 (cur | prev) +76 Johnaddis talk contribs | ||||
| N 09:03 | Keithley 160/Repairs diffhist +592 Gregor talk contribs (Created page with "==All ranges broken== If all ranges on your instrument are broken, but the power supply is fine, it check the analog output on the rear of the instrument. It is directly connected to the output of QA703 (an LM201 op-amp). Since the analog output connector is a open two-prong type it is very susceptible to accidental shorting. After replacing the op-amp, my instrument came back to life. I added a 1 kΩ resistor in series with the external output connector, to prevent acc...") | ||||
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08:12 | Keithley 182 2 changes history +373 [Peter (2×)] | |||
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08:12 (cur | prev) +158 Peter talk contribs | ||||
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07:44 (cur | prev) +215 Peter talk contribs | ||||
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07:44 | (Upload log) [Peter (3×)] | |||
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07:44 Peter talk contribs uploaded File:Keithley 182 901 01A.pdf | ||||
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07:43 Peter talk contribs uploaded File:Keithley 182 901 02E.pdf | ||||
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07:42 Peter talk contribs uploaded File:Keithley 182 903 01B.pdf | ||||