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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Philips CM-20, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Philips CM-20 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Philips CM-20. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Philips CM-20 should contain:
- informations concerning technical data of Philips CM-20
- name of the manufacturer and a year of construction of the Philips CM-20 item
- rules of operation, control and maintenance of the Philips CM-20 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Philips CM-20 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Philips CM-20, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Philips service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Philips CM-20.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Philips CM-20 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
OPERATION PROCEDURES FOR PHILIPS/FEI CM-20 TRANSMISSION ELECTRON MICROSCOPE General Comments Normally the m icroscope will be left in the power ON (standby ready to operate) condition; i.e., all circuits will be con tinuously energized and the microscope will be under full vacuum (MAIN, VACUUM, HIGH TENSION lamps on th e right control panel are all[...]
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Page 2
(2) Hold the specimen holder with the airlock-op ening pin up. Carefully insert the specimen holder into the airlock entry and slide it in un til stop. At this point , pre-pumping of the airlock commences as indicated by illum ina tion of the red airlock indicator light. (3) After hearing a click sound, gr ape the specimen holder and turn clockwise[...]
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Page 3
(4) Make sure the camera cover is correctly pl aced, and then press CAM AIR again to pump the camera chamber. You should be able to hear the mechanical pum p starting. Pull on the camera lid to ensure the vacuum is pulling. (5) Press READY, then TEM CAMERA, and CAM INIT. (6) Press RESET to reset film numb er (to 36), and press READY. (7) Press MODE[...]
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Page 4
ROUTINE ALIGNMENT PROCEDUR ES FOR PHILIPS CM-20 TEM The following protocol is not intended to be spec ific. It is intended to be used as a mean to refresh one’s memory in carry out step by st ep procedures which are necessary to obtain reasonably good results with the transmission electron microscopes. More specific information can be obtained fr[...]
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Page 5
(6) Set voltage at 20. Push HIGH TENSI ON button (the green LED should light) Slowly increase voltage from 20 kV to 160 kV using soft keys (wait 1 minute between each step). (7) After voltage reaches 160 kV, press FR EE CONTROL soft key. Use focus knob, slowly increase voltage from 160kV to 200kV. If it arcs (loud popping sound), use focus step siz[...]
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Page 6
by first making crossover image with INTENSITY knob, then open up condenser II (INTENSITY)/expand the beam and close condenser II on the opposite side of crossover. If the beam appears to sw ing this indicates th e aperture is not properly centered. Center the aperture by moving the X and Y controls on the aperture housing. (5) Repeat the last step[...]
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Page 7
(4) Condenser lens astigmatism correction - Press STIG to activate stigmator control. - Press COND soft key so that it is highlighted (the default is OBJ). - Condense the beam. - Use MULTIFUNCTION knobs to correct the astigmatism. The beam should be round when changing the setting of the INTENSI TY knob, or the filament image will be sharpest if fi[...]
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Page 8
- Press ALGN to de-activate. (3) Voltage centering - Place a more or less symmetrical im age to the center. - Condense the beam at the center of screen, and spread the beam . - Press ROT CENTER and VOLT soft keys in ALGN. - Make sure it is in the VOLT m ode (check bottom right soft key). - Determine the voltage center from the m ovement of the enti[...]
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Page 9
(5) Change camera length (by changi ng MAGNIFICATION knob) to 44.0 mm. (6) Realign the diffraction pattern. (7) Repeat steps 4 to 6 until the transm itted spot remains at (near) the center w hile changing camera length between 44.0 mm to 3.2 m . (8) Deactivate ALGN, and depress D to get out of diffraction mode. (iv) Insertion and centering objectiv[...]
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Page 10
(2) Set a magnification at least 3 or 4 times hi gher than that will used for photographing. (3) Obtain the thinnest over-focus (Fresnel) fringe that can be clearly seen in the binocular, with beam spread. Caution: make sure you focus the binocular on the viewing screen. (4) Adjust the OJB STIG X and Y (MULTIFUNCTION keys) until the fringe fo llows[...]
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Page 11
WAC 09/28/02 VI. COMPUTER ALIGNMENT AND AS TGMATISM CORRECTION FOR 200 kV 1. Preses PARAMETERS on TEM br ight field page 3 times 2. Press REMOTE CONTROL to highlight it (This w ill allow the com puter to talk to the TEM). 3. Turn on the PC monitor (on/o ff switch on back of m onitor). 4. If computer is already in execution mode, go to step 6 5. At [...]