INFICON TM-400 Thin Film Deposition Monitor - Manual (Page 38)

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TM-350/400 Operating Manual
4.3 Internal DIP Switches
On the back of the display board (shown in Figure 3-9 on page 3-12 ) are 2 DIP
switch packs:
Š S1’s switches control Crystal Frequency selection and Computer Interface
Address settings.
Š S16’s switches control the DAC scale, enable/disable negative thickness
readings in the Rate and Thickness displays, allow/disallow crystal switching to
a failed sensor input, allow the source shutter to pulse close (on) for 1 second
once thickness endpoint is reached, and on the TM-400 allows single sensor
input mode.
WARNING - Risk Of Electric Shock
Under no circumstances should the Monitor cover be
removed without first removing the line voltage cord, as
dangerous voltages are present inside the case.
To make any changes to these settings, first remove the cover as described in
section 4.4 on page 4-8 . Once your changes have been made, replace the cover
and restore power to the Monitor. Changes will take effect only after the instrument
has been restarted.
4.3.1 Crystal Type Selection
The Monitor is compatible with 2.5, 3, 5, 6, 9, and 10 MHz sensor crystals. The DIP
switch pack S1 is used to set the Monitor for the particular sensor crystal frequency
to be used. As shipped the Monitor is set up for a 6 MHz sensor crystal. To
reconfigure the monitor for any other frequency, the switches 1, 2, and 3,
respectively, on the front panel need to be set as shown in
Table 4-1 .
Table 4-1 Setting the Frequency
Frequency S/SEL 1 S/SEL 2 S/SEL 3
2.5 OFF OFF OFF
3 ON OFF OFF
5 OFF ON OFF
6 ON ON OFF
9 OFF OFF ON
10 ON OFF ON