EAGLE 2 Operator’s Manual
Overview • 121
Appendix C: Sub PCBs
Overview
An EAGLE 2 that has one or more of the standard four sensors, catalytic LEL, oxygen,
H
2
S, and CO, and no optional sensors does not have any sub PCBs installed. The sub
PCBs are used to add circuitry to the EAGLE 2 that supports various optional sensors. An
EAGLE 2 has provisions to install up to three sub PCBs. Although an EAGLE 2 with
three sub PCBs installed can theoretically support seven sensors if you include the
standard four sensors, the EAGLE 2 is only capable of having six active channels.
Description
The main PCB can accept up to three sub PCBs. The sub PCBs are installed below a row
of connectors near the top of the main PCB. The three positions are labeled on the main
PCB silkscreen from right to left as SUB1, SUB2, and SUB3. These labels are not visible
when the sub PCBs are installed.
Figure 26: Sub PCB Positions
SUB2
SUB1
SUB3
Sub PCB Positions
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