5. At this point, enough connections have been made for a Simplex Technical Representative (TR) to check out
the basic operation of your 2120 system. It is recommended that you contact your local TR and have him verify
that all data, audio/telephone, and power line connections have been properly made. Then the TR will have you
apply power to the system so that he can verify the operation of the system’s basic components. When the TR
has completed his preliminary checkout, power-down all equipment.
6. Wire all external devices for the Monitor and Control Point circuitry. To do so, you must:
l
Refer to each equipment cabinet drawing to determine where each transponder’s Monitor and Control
Point circuit is terminated.
l
Refer to the M-21 20 or M-2120-ET initiating wiring diagrams, as appropriate, to determine how peripheral
devices are connected to a transponder’s Monitor and Control Points.
As you finish wiring a group of external devices, verify that your wiring is free from grounds before terminating
each circuit to its associated Monitor or Control Point.
Note: Monitor Point wiring includes an EOL resistor at the end of each circuit (with the exception of McCulloh loop
Monitor Point circuitry). Therefore, as you connect each Monitor Point to its associated circuit, remove the
EOL resistor connected at the Monitor Point terminal (this EOL resistor was installed by the factory).
8. Now that the system is completely installed, you should again contact your local TR. The TR will completely
check out your system. Once he has completed his checkout he will either notify you of any wiring problems he
encountered, or will let you know that the system is operating properly.
9. Correct any wiring defects the TR found. If no defects were found, then the installation phase of your job is
complete. If there were wiring defects, contact the TR after you have corrected the problem and have him verify
that your system is now operating properly.
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