Det-Tronics EA2000HBM Eagle 2000 Heartbeat Monitor - Manual (Page 2)

DET-TRONICS DET-TRONICS DET-TRONICS DET-TRONICS
® ® ® ®
Detector Electronics Corporation
6901 West 110th Street Minneapolis, Minnesota 55438 USA
Tel: 612.941.5665 or 800.765.3473 Fax: 612.829.8750
95-8511
11/99
INSTRUCTIONS
Heart Beat Monitor
EQ2400HBM & EA2400HBM
Section I
General Information
The EA2400HBM and EQ2400HBM are handheld instruments, used to trouble shoot communication wiring
problems on the Det-tronics Eagle 2000 and Eagle Quantum systems. The EA2400HBM is for use on Eagle 2000
systems and the EQ2400HBM is for use on the Eagle Quantum systems.
DESCRIPTION / SYSTEM THEORY OF OPERATION
The Heart Beat Monitor provides the means to determine the location of a break or short in the communications
network loop of a Eagle Quantum™ or Eagle 2000™ system . The hand held device is powered by an internal
standard 9V battery and is supplied with a carrying case and test leads.
The Det-tronics Eagle System network communications modules utilize a unique patented technique for detecting
network wiring problems. This feature minimizes the possibility of a communication breakdown in the event of a
wiring fault and can also serve as an aid in troubleshooting. To establish systems integrity a “Systems Heart Beat”
is generated by the Gateway and sent to each module on the system’s network communications loop from the first
network communication port (COM 1). This Heart beat must be received by all communication modules on the
network and return to the second network communications port (COM 2) on the gateway.
If a problem occurs somewhere within the LON network wiring, the systems Gateway annunciates the fault, while
the fault isolation circuitry in the affected nodes isolate the section of the network where the fault has occurred.
A single open or short on the network will not typically affect system communication between the field devices and
the systems Gateway. Systems communication will continue until the wiring problem can be repaired.
The Heart Beat Monitor is supplied with a carrying case and test leads. The monitors carrying case can be
attached to the technicians wrist, via the Velcro strap, to provide hands free operation of the test leads. The
carrying case is provided with a viewing window to view the status LED’s.
FEATURES
•
Status LED’s: COM 1, COM 2 and AUXILIARY
•
Standard Banana Jacks for test connections
•
Carrying case with wrist strap and test leads