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Initial conditions:
o Check Vacuum system (2X10-6 or better)
Check of Specimen Stage Coordinates
For loading a specimen, the specimen stage should be at the coordinate location (home position).
α
coordinates of specimen stage can be checked on the Stage operation
The x, y and
window
- "Operation" -> "stage operation"
- set the specimen stage at the home position (x, y, α = 0)
Check the box next to the greyed out Reset button and then click Reset button to reset the stage.
NOTE: If the specimen holder is taken out other than in the home position, the objective lens and
adjacent parts may be damaged by the specimen holder.
Pull the sample holder out of the column
Draw out the specimen holder from the column.
- hold the handle and pull straight back until the holder stops, turn the specimen holder clockwise 15°
- pull back again until the holder stops, turn the specimen holder counterclockwise 30° making sure that you
turn all the way till you can no longer rotate the holder.
Hitachi-HT7700 TEM Operation
No magnetic samples!!!
No Organic/bio samples!!!
o HV On
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Summary of Contents for Hitachi HT7700
- Page 1 Hitachi-HT7700 TEM Operation No magnetic samples!!! No Organic/bio samples!!! Initial conditions: o Check Vacuum system (2X10-6 or better) o HV On Check of Specimen Stage Coordinates For loading a specimen, the specimen stage should be at the coordinate location (home position).
- Page 2 - turn the “EVAC-AIR” switch to “AIR”, wait for about 10 seconds (Two sounds) - remove the sample holder (avoid touching the sample holder beyond the O-ring) Load your sample Do not touch to the left of the O-ring for this is the vacuum side of the holder. Fix the holder with the holder fixing table.
- Page 3 - flip up the “EVAC-AIR” switch to “EVAC” - Pumping will be complete when the green lamp is lit and makes an alarm sound, (The green lamp is lit for about 10 seconds. During this period of time, the lock mechanism is released)- turn the specimen holder clockwise 30°;...
- Page 4 Turn on the filament/beam (a) Turn on the filament voltage (if the filament voltage is off) - “Operation” -> “HV/Filament Operation” - click “Filam. on”, it takes about 30 seconds (b) Turn on the beam - Select Auto mode, click “Beam On” under Auto mode, the filament current will automatically turn on and turn off when you loading or remove the sample holder (c) Click Run, to turn on the screen camera.
- Page 5 Center the Beam (if the beam is not centered) Push the “BH” button, adjust the Beam centre by using the X, Y knobs on the operation panel. Start acquiring TEM images (Please always keep attention to the exposure intensity) (a) Find your sample using the Screen camera (Left display) You can use HC (>0.2K) mode to search your sample at the beginning, then change to HR mode (>...