Tektronix TAS 465, Service Manual

Page: 111 / 268

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6Ć3
3. Do not remove the oscilloscope cabinet unless you have met precaution
number 2, above. Consider all internal modules staticsensitive.
4. Remove anything capable of generating or holding a static charge from
the work station surface.
5. Do not slide the modules over any surface.
6. Do not use highĆvelocity compressed air when cleaning dust from
modules.
Table 6Ć1 lists the relative susceptibility of various classes of semiconducĆ
tors. Static voltages of 1 kV to 30 kV are common in unprotected environĆ
ments.
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/ %,
MOS or CMOS microcircuits or discrete circuits, or linĆ
ear microcircuits with MOS inputs (most sensitive)
1
ECL 2
Schottky signal diodes 3
Schottky TTL 4
HighĆfrequency bipolar transistors 5
JFET 6
Linear microcircuits 7
LowĆpower Schottky TTL 8
TTL (least sensitive) 9
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33