INFICON SQM-160 Thin Film Deposition Monitor - Manual (Page 84)

6 - 8
IP
N 07
4-
51
1-
P1
C
SQM-160 Operating Manual
6.2.3 Troubleshooting Computer Communications
6.3 Replacing the Crystal
CAUTION
Always use clean nylon lab gloves and plastic tweezers
for handling the crystal (to avoid contamination which
may lead to poor adhesion of the film to the electrode).
Do not rotate the ceramic retainer assembly after it is
seated (as this will scratch the crystal electrode and
cause poor contact).
Do not use excessive force when handling the ceramic
retainer assembly since breakage may occur.
NOTE: Certain materials, especially dielectrics, may not adhere strongly to the
crystal surface and may cause erratic readings.
NOTE: Thick deposits of some materials, such as SiO, Si, and Ni will normally peel
off the crystal when it is exposed to air, as a result of changes in film stress
caused by gas absorption. When you observe peeling, replace the
crystals.
Table 6-3 Troubleshooting Computer Communications
SYMPTOM CAUSE REMEDY
1. Communications cannot
be established between the
host computer and the
SQM-160. a. Improper cable
connection. a. Verify for cable
connections are seated
properly.
b. USB Driver not installed
properly. b. Reinstall drivers. Confirm
the operating sytem is an
accepted OS. If autorun
driver install feature does
not work, the driver can be
installed from the device
manager manually.