The system monitors the turbomolecular pump speeds and continuously measures vacuum
pressure with built-in Pirani and Penning gauges. The gauges also serve as switches, stopping
operation when vacuum loss is detected.
A vacuum isolation valve isolates the source sample cone from the mass analyzer, allowing you
to perform routine maintenance without venting the system.
1.10 Rear panel
The following figure shows the rear panel locations of the connectors used to operate the mass
spectrometer with external devices. For further details, see
Figure 1–9: Mass spectrometer rear panel:
Auxiliary
10MB
/100MB
Activity
External Connections 2
10
1
External Connections 1
10
1
LA N
EPC Com Port
Video Output
Service Bus
1
2
3
4
5
6
7
8
9
10
+
-
Event
In
1
ExternalConnections1
No
tu
se
d
CE
Interlock
OUT
+
-
Event
In
2
No
tu
se
d
-
IN
IN
Com
N/
C
N/
O
Co
m
N/
C
N/
O
1
2
3
4
5
6
7
8
9
10
+
-
Analogue
Ou
t
ExternalConnections2
OUT
Ga
sF
ai
l
Interloc
k
Not
used
-
OUT
OUT
+
-
Event
Ou
t1
+
-
Event
Ou
t2
OUT
Shielded Ethernet
Video connection (for use with the optional NanoFlow ESI or ionKey source)
Event inputs and outputs
Power connection
Roughing pump connections
Roughing pump grounding connection
June 9, 2016, 715004990 Rev. A
Page 35
