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| aspex:psem [2017/01/21 03:32] – mcmaster | aspex:psem [2018/07/01 01:26] – mcmaster | ||
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| + | ====== Operation ====== | ||
| + | |||
| + | 2018-04-24 notes | ||
| + | * Summary: generally seems to work, reliability issues possibly software related | ||
| + | * Booting | ||
| + | * Embedded controller ethernet must have system (ie my laptop) at other end at boot | ||
| + | * Embedded controller stage connection must be attached at boot | ||
| + | * Cannot be activated without restarting system | ||
| + | * GUI will complain and then segfault, but otherwise seems operational | ||
| + | * GUI | ||
| + | * Sometimes signal disappears and can be made to come back by switching signal views around (ie left pane vs right pane) | ||
| + | * Sometimes GUI becomes completely unresponsive and has to be rebooted. But seems to only happen when changing settings, ie not during imaging cycles | ||
| + | * Pressure | ||
| + | * Around 2E-5 typical pressure after pumping down | ||
| + | * BSE not working | ||
| + | * Wiggling power cable RJ-11 causes noise on screen | ||
| + | * Removing signal BNC results in blank screen | ||
| + | * Next | ||
| + | * Check power supply | ||
| + | * Scope on BNC | ||
| + | * EDS still not tested | ||
| + | * Adjusting XY centering helped bring up beam energy | ||
| + | * Current was something like 25 uA...think target is 75 uA => probably need to adjust something | ||
| + | * Was able to select different acceleration voltages | ||
| + | * Focusing | ||
| + | * Set image to 256x256 | ||
| + | * Set scan speed relatively high | ||
| + | * Adjust slider until in focus | ||
| + | * Increase resolution if need to get finer focus | ||
| + | * Didn't try using auto-focus this time | ||
| + | * Degaussing may bring out of focus | ||
| + | * Changing accelerating voltage brought out of focus slightly maybe | ||
| + | * Higher acceleration voltages are fuzzier (makes sense => deeper penetration => more scattering) | ||
| Open questions / TODO: | Open questions / TODO: | ||
| Line 224: | Line 258: | ||
| + | ===== Disk image ===== | ||
| + | |||
| + | I have two disk images: | ||
| + | - My SEM, with EDS support | ||
| + | - A friends SEM, does not have EDS | ||
| + | |||
| + | < | ||
| + | Disk psem_hdd_eds.bin: | ||
| + | Units: sectors of 1 * 512 = 512 bytes | ||
| + | Sector size (logical/ | ||
| + | I/O size (minimum/ | ||
| + | Disklabel type: dos | ||
| + | Disk identifier: 0x00000000 | ||
| + | |||
| + | Device | ||
| + | psem_hdd_eds.bin1 * 63 4192964 | ||
| + | psem_hdd_eds.bin2 | ||
| + | psem_hdd_eds.bin5 | ||
| + | psem_hdd_eds.bin6 | ||
| + | psem_hdd_eds.bin7 | ||
| + | </ | ||
| + | |||
| + | For kicks I tried booting a disk image in QEMU. It got stuck right after "EM386 active" | ||
| + | |||
| + | mounting: | ||
| + | |||
| + | < | ||
| + | mkdir 1 5 6 7 | ||
| + | sudo mount -o loop,, | ||
| + | sudo mount -o loop, | ||
| + | sudo mount -o loop, | ||
| + | sudo mount -o loop, | ||
| + | </ | ||
| + | |||
| + | Only 1 has real data on it: | ||
| + | |||
| + | < | ||
| + | / | ||
| + | / | ||
| + | / | ||
| + | / | ||
| + | </ | ||
| + | |||
| + | Poked around, various things of potential use. | ||
| + | |||
| + | < | ||
| + | DXPInit.exe v. 1.00b - Copyright (C) 2000 Aspex LLC | ||
| + | c: | ||
| + | EDSDetector | ||
| + | Syntax: DXPInit [1|2|3|4] [d[isc]] [n[odisc]] [v[erbose]] [h[elp]] | ||
| + | where 1,2,3,4 is the COM port (default=3) and | ||
| + | ' | ||
| + | ' | ||
| + | Initializes and calibrates the Gresham digital pulse processor using | ||
| + | configuration data from ' | ||
| + | ENGINE.INI file items: | ||
| + | | ||
| + | | ||
| + | | ||
| + | | ||
| + | | ||
| + | </ | ||
| + | |||
| + | ENGINE.INI: | ||
| + | < | ||
| + | DSVAAddr=(int)800 | ||
| + | CBAddr=(int)768 | ||
| + | DB3Addr=(int)53248 | ||
| + | EDSMemAddr=(int)54272 | ||
| + | EDSAddr=(int)704 | ||
| + | DACAddr=(int)640 | ||
| + | GainVal=(int)0 | ||
| + | XOffCal=(int)1022 | ||
| + | YOffCal=(int)1019 | ||
| + | XCenterCal=(int)2049 | ||
| + | YCenterCal=(int)2045 | ||
| + | Range1=(float)9.86 | ||
| + | Range2=(float)99.44 | ||
| + | Range3=(float)994.95 | ||
| + | LineDel[0]=(int)0 | ||
| + | ... (some larger calibration tables) | ||
| + | ShfCorr[7][3]=(int)4 | ||
| + | HVSupplyType=(int)1 | ||
| + | VacuumGauge=(int)1 | ||
| + | EDSDetector=(int)1 | ||
| + | BSEDOption=(int)2 | ||
| + | VacuumOption=(int)0 | ||
| + | Bias=(int)0 | ||
| + | FilamentCycles=(int)64 | ||
| + | FilamentTime=(int)5821 | ||
| + | UseStageLimits=(int)0 | ||
| + | XUpperLimit=(float)999.90002 | ||
| + | XLowerLimit=(float)-999.90002 | ||
| + | YUpperLimit=(float)999.90002 | ||
| + | YLowerLimit=(float)-999.90002 | ||
| + | OrthogonalCorrection=(int)4 | ||
| + | CO_XMin=(float)0.017403 | ||
| + | CO_Ko=(float)4.549e-07 | ||
| + | MagConstant=(float)18429 | ||
| + | LoggingEnable=(int)0 | ||
| + | ImageRotA=(float)11000 | ||
| + | ImageRotB=(float)180 | ||
| + | </ | ||
| ====== Computer: GUI ====== | ====== Computer: GUI ====== | ||
| Line 293: | Line 430: | ||
| "Both detectors record 2,048 channels of 10eV per channel" | "Both detectors record 2,048 channels of 10eV per channel" | ||
| + | |||
| + | |||
| + | ====== 2018-06-30 ====== | ||
| + | |||
| + | Use T5 bit to remove cartridge | ||
| + | |||
| + | Yesterday ordered spare cartridge | ||