PAL-AT Operating Manual
35
2.10.3.3 Ethernet Auto-Negotiate Selection
By default, the PAL-AT is shipped with the Ethernet port permanently set to 100Mb / Full duplex. Optionally,
the port can be set to auto negotiate speed and duplex when required. This is most often required when
hard setting the switch port isn’t possible to allow 100Mb / full duplex, or when connecting to a network
that otherwise requires auto negotiation (i.e. Gigabit networks).
Ethernet auto negotiation is set through the placement of a jumper on the Auxiliary Header “J4”. The
header is located to the lower left of the power supply. Refer to Section 4.6 for further detail.
NOTE: System must be power cycled after changing the jumper position.
3 Response to Alarms
3.1 Decisions
PAL-AT detects several alarm conditions and provides location information. PAL-AT detects changes in
the system from the baseline established when an initial reference map was made. An alarm response
decision must be made based on several criteria, e.g. the type of liquid monitored and the location,
accessibility, and severity of the leak. The following sections help determine a course of action.
3.1.1 Locations
PAL-AT sensor locations fall into two broad categories: accessible locations and inaccessible locations.
Accessible locations are monitored because facility personnel do not visit them often. Inaccessible areas
are monitored because it is too expensive, too difficult or remote for regular inspection.
No Jumper or jumper not in active position
(across right pins or on 1 pin). Default as
shipped.
permanently set (Legacy)
Jumper active in position 1
Auto Negotiate
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