VS Series Helium Mass Spectrometer Leak Detectors
1-24
DRAFT 4/
23/15
1.6 Rear Panel
The rear panel of the leak detector with an external mechanical pump (Model VS MR15,
MD15 or MD30+) and a wireless remote control option is shown in Figure 1-15.
Figure 1-15 VS Series Rear Panel
➀ Serial Connector A 9-pin male D-type connector to interface with an external PC via
RS-232 type communications protocol for system diagnostic or
control.
A detailed summary of information related to serial communication
is provided in
Section A “Communications Protocol” on page A-1.
➁ Cover Plate Access to expansion slot. This is not used when an optional I/O
PCB is installed. A rear panel of the optional I/O PCB is shown in
Figure 1-16 on page 1-25.
➂ Power Entry
Module
Provides supply power, overcurrent and EMI protection for the leak
detector. The Power Entry Module consists of:
❑ Power Input Connector - An IEC/EN60320/C20 standard,
three-prong grounded Inlet connector.
❑ Power Switch (I/O) - A 20A rocker type Power
Switch/Thermal Circuit Breaker.
❑ 20 A EMC line filter.
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