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aspex:psem

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overview.jpg

Open questions / TODO:

  • Manual describes filament volts, but GUI shows %. What is the mapping?
  • Why can't I get an image in suggested filament range? Needs replacement?
    • Note: replacements on order
  • Do I need to replace column liner? Can I get them?
  • BSE detectors works?
  • EDS works?
  • What does bias actually do? Bias on Whenelt to extract electrons?
  • Why didn't newer software work? Retry it
  • Source imaging mode?
  • Gun assembly is slightly crooked (seal?). Replace seal? What caused this?
  • Dump engine HDD
    • Without removing it?

Notes primarily from McMaster unit. Might add some info from mne

  • “FL DEPT OF LAW ENFORCEMENT”

20 kV

RJ Lee ⇒ Aspex ⇒ FEI

  • Quickstart manual 4.0 Oct 1997: RJ Lee Instruments Ltd.

http://www.eng-tips.com/viewthread.cfm?qid=212783

  • “I just called RJLee, and discovered he has sold the business and there are no more new PSEM's being sold.”
    • Maybe during a short while? Aspex continued sales
  • “R J Lee's SEM group was spun off as Aspex in 1995”

“By default, we use 10.133.67.1 for the engine and 10.133.67.2 for the console…The IP address of the engine is configured in the file C:\PSEM\WATTCP.CFG”

  • “These addresses conform to the communications protocol standard RFC-1918 for non-routed IP addresses”
  • No they don't…

Calibration: “Geller multi-resolution mag standard”

“On discrete high voltage power supplies, the bias is adjusted via a physical knob on the back of the power supply. On continuous high voltage power supplies, the bias is adjusted by a software knob accessed via the Advanced button on this panel.”

“he engine will issue a couple higher-pitched beeps within the first 10-15 seconds, then after about a minute a single low-pitch (256 Hz) 1⁄2-second beep will indicate that the engine has started successfully”

Parts

Image Vendor Model Type Notes
gauge.jpg Pfeiffer Gauge 1.033279656
turbo.jpg Edwards EN11354967 Pump, turbo
Pump, roughing
EDS, sensor

Vacuum

sensors.jpg

upper.jpg

rough_front.jpg

rough_back.jpg

chamber.jpg

gun_cover.jpg

gun_open.jpg

gauge.jpg

Pfeiffer Vacuum, D-35614 Asslar
Typ: PKR 251 (2010/09)
No: PTR26000
F-No: 44369203
15...30VDC, 2W

“You will note that there is a n indicator light labeled “PUMP” on the front drawer of the computer drawer which will initially flash. This flashing indicates that the turbo pump is being accelerated to its maximum speed. The turbo should normally reach its maximum speed in 2-3 minutes and this light will then illuminate steadily. Once the pump light is a solid green, no longer flashing, the system is ready to use.”

“Increase the filament knob until you see the value for EMISSION begin to rise. This will typically occur around DRIVE setting of 5-8 volts. At this time you will also see some indicates of an image on the image screen.”

“Increase FILAMENT until somewhat past the point at which the image brightness no longer appears to increase.”

“Under normal circumstances, the amount of stigmation correction should be rather modest (typically less than 0 mA correction current). If large correction values are required, it may be an indication that the column liner tube is contaminated and needs to be replaced”

“The electron source on the PERSONAL SEM users a unique emitter cartridge construction (US Patent 5,376,792) that incorporates a filament and control grid in a single low-cost, pre-cleaned and pre-aligned assembly.”

Front

cage.jpg

Back

back1.jpgback2.jpgback3.jpgback4.jpgback5.jpgback6.jpg

eds_cards.jpg

Aspex Instruments
P/N 40P 03954
S/N 03954:10004

PC

engine1.jpg

XY stage

xy_cont_back.jpg

xy_cont_side.jpg

Where does this go?

Filament

Cambridge 12 mm diameter, 1 mm pin diameter

(09:14:44 AM) mne: I think I ordered them from a german supplier, but they are easy to find in the US as well
(09:15:43 AM) mne: They are cambridge filaments
(09:16:12 AM) mne: Should be those: https://www.tedpella.com/apertures-and-filaments_html/tungsten-filaments.htm#anchor1403
(09:16:56 AM) mne: 12mm disc diameter, 1mm pin diameter
Vendor Item # Description Price/pack Qty/pack Qty/each Notes
Ted Pella 1403
Electron Microscopy Sciences
Electron Microscopy Sciences
SPI Supplies
SPI Supplies
EB Sciences
EB Sciences
Fisher Scientific
Soquelec
Soquelec
ME Taylor

Stud


Computer

Starting MS-DOS...


HIMEM is testing extended memory...done.

MICROSOFT Expanded Memory Manager 386  Version 4.49
Copyright Microsoft Corporation 1986, 1994

EM386 successfully installed.

Expanded memory services unavailible.

  Total upper memory availible  . . . . . .    82 KB
  Largest Upper Memory Block availible  . .    59 KB
  Upper memory starting address . . . . . .  C900 H

EM386 Active.

Lut1 is initialized
Lut2 is initialized

DB2 COFF Loader 2.00C - IBM-PC
[ Loading: c:\db3\writit.out ]

DB2 COFF Loader 2.00C - IBM-PC
[ Loading: c:\db3\wrto.out ]

DB2 COFF Loader 2.00C - IBM-PC
[ Loadering: c:db3\scanit.out ]
SysTest.exe - PSEM II/2000 hardware validation utility - Mar 15 2001
  Copyright 1998-2000 Aspex LLC
  'SysTest -?' for help.

Power Supplies
  Nominal +15 V power supply = 14.0058 V
  Nominal -15 V power supply = 13.107 V
Scan center found at (2049,2044)
DVSA offset (1022,1019)
Unable to find power line sync signal.
DXPInit.exe v. 1.00b - Copyright (C) 2000 Aspex LLC
3Com EtherLink PCI Bus Master Packet Driver v5.2.6
(C) Copyright 1999 3Com Corp.  All rights reserved.

Attempting to auto detect media.......

Initial boot:

Personal SEM Embedded Engine v1.38(A) Oct 2 2003 12:02:26
Copyright (C) 1998-2003 Aspex, LLC
Up time     0:00:00
Core        205

>

BSED level=0
PCI 4pi board not found
PCI 4pi board not found
EDS firmware loaded.

Noral electronics configured.
Message sent to 12000005 not handled [10004]
Message sent to 12000003 not handled [10004]
[Error] 12000002(Vacuum Gauge) - No Supply
12000002(Vacuum Gauge) - [Error] No Supply

The errors cleared on subsequent boots. Unclear if they cleared on their own or because I was messing with cables

aspex/psem.1479613417.txt.gz · Last modified: 2016/11/20 03:43 by mcmaster