P4 - External Fan; J1 - In-Out - Agilent Technologies Turbo-V 903 Notice De Mode D'emploi

18 Technical Information
Earth (ground) Connection
P4 – External Fan
Figure 8
This is a dedicated 48 Vdc connector to supply the optional external fan.
A shielded cable with ferrite is shipped with the controller (see picture). The
faston contact has to be connected on the front panel in order to reduce noise
and accomplish the EMC rules.
J1 – In-Out
Figure 9
This connector carries all the input and output signals to remote control the
TV 903 Pumping System.
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External fan
In-Out
Turbo-V 903 Pumping System User Manual / 87-901-016-01 (A)