INFICON MDC-370 Thin Film Deposition Controller - Manual (Page 104)

MDC-370 DEPOSITION CONTROLLER
of the desired nominal input voltage is accomplished by removing and reorienting
the voltage selector assembly. Follow the steps listed below to select the proper
line voltage:
• Remove the AC power cord if installed.
• Using a medium flat-tip screwdriver, open the cover on the power module
exposing the fuses and the voltage select assembly.
• Rotate the voltage selector until the desired voltage is in such a position that
makes it the only number displayed with the power module cover closed.
• Close the power module cover and verify that the desired line voltage is
visible through the hole in the cover.
8.3.3 GROUND LUG
In particularly noisy environments the MDC-370 should be grounded to the
instrument rack, or other good ground, by means of the grounding lug in the rear
panel. (See Figure 8-2).
8.3.4 REMOTE POWER HANDSET
Figure 8-1 shows the location of the receptacle into which the Remote Power
Handset is plugged.
8.3.5 SOURCE-SENSOR
The system interface with the remote sensor oscillator is a 50 Ohm coax cable
terminated with BNC connectors similar to AMP 225395-1 (plug) and AMP
225396-1 (jack). The plug on the Source-Sensor Board mates to a jack on the
cable which is supplied with the oscillator.
The control voltage output is interfaced via a 4-pin, circular mini DIN connector
equivalent to CINCH MDSS-4S. The pin layout is defined in Figure 8-4 and
Table 8-2 supplies pin signal assignments.
8.3.6 RS-232 COMMUNICATION
There are two connections for the RS-232 interface port. A D9P connector is
provided on the rear panel for permanent connection to the host computer. The
pin layout is shown in Figure 8-5 and Table 8-3 lists pin signal assignments,
including a definition of whether the signal is an output from the MDC-370 or an
input to the MDC-370.
A DJ11 jack located on the front panel is provided for temporary connection to
the host computer. Pin layout and pin signal assignments are shown in Figure 8-7
and Table 8-5.
The MDC-370 acts as DTE, and accordingly the 9-pin connector has ‘plug’ pins.
It can be used with a DCE or a DTE host cable connection providing the sense of
the RxD/TxD data lines and the control lines is observed. Pin 2 ‘TxD’ transmits
data from the MDC-370 to the host; pin 3 ‘RxD’ receives data from the host. Pin
7 ‘CTS’ is a control output signal, and pin 8 ‘RTS’ is a control input signal.
CONTROLLER INSTALLATION 8-2