Appendix F: Theory Of Operation; Transmitter Block Diagram - ComSonics CyberTek QUALIFIER User Manual

Appendix - Qualifier System

Appendix F: Theory of Operation

Home Qualification System - Transmitter Block Diagram
Dual Band Antenna
Transmitter
Test Signal
Enable
Transmitter
Switch
Diplex Filter
Activation Activation Power
Receiver Decoder Input
The transmitter is mounted in and powered from a vehicle. The antenna is mounted on the
vehicle's roof. Preferably, place it in a location free of nearby metallic objects. The dual
band antenna receives a properly coded activation signal from a meter. The diplex filter
routes the activation signal to the activation receiver. The activation decoder determines a
code match between the received signal and the setting of the transmitter. When a code
match occurs, the decoder activates the transmitter enable switch. Otherwise, the transmitter
remains in stand-by mode. The transmitter enable switch causes the transmitter to generate a
test signal. The test signal is fed to the dual band antenna by the diplex filter. The diplex
filter prevents the test signal from being routed to the activation receiver.
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