MKS HPQ3, Hardware Manual

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MKS Instruments UK Ltd
HPQ3 Hardware Manual – SP101019.101 October 2012
21
2.8 Analogue I/O Connector
A standard 15-way D-type socket used for interfacing with external equipment.
This may be already in use depending on the type of RGA system purchased.
This interface offers the following functionality:
Two analogue outputs 0 to +10V 12bit
Four, quasi-differential analogue inputs, -11 to +11V, with a maximum voltage on the return
of
±
0.5V
±
15V power outputs both fused at 120mA, fuses are self-resetting.
NOTE:
The 120mA maximum load for the power supply outputs is shared between the Digital and
Analogue connectors.
Pin Function Description
1 -15V -15V supply output, fused at 120mA
2 Analogue Input 4 Return
3 Analogue Input 3 Return
4 Analogue Input 2 Return
5 Analogue Input 1
±
11v
6 Composite Return Differential Output Return
7 Electrometer Differential Output Direct Electrometer output from 50Meg feedback
resistor
8 0V
9 +15V +15V supply output, fused at 120mA
10 Analogue Input 4
±
11v
11 Analogue Input 3
±
11v
12 Analogue Input 2
±
11v
13 Analogue Input 1 Return
14 Analogue Output 1 0
– 10v
15 Analogue Output 2 0
– 10v