| CPC H04B 17/0085 (2013.01) | 7 Claims |
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1. A radio frequency (RF) validator instrument for testing functionality of a signal device having first and second terminals, said instrument comprising:
an RF transmitter for producing an emission signal processed as a test signal;
an in-port and an out-port respectively connecting to said second and first terminals;
a direct current (DC) bias detector comprising first and second voltage dividers respectively connecting to said out-port and the second terminal, said first voltage divider receiving said test signal from said out-port and providing a first bias signal, the signal device producing a response signal to said in-port and to a second voltage divider that provides a second bias signal, said bias detector combining said first and second bias signals as a combination bias signal;
an RF receiver for receiving said response signal from said in-port and said combination bias signal for producing a detection signal; and
an RF verifier for comparing said detection and combination bias signals to determine whether their difference is within an established threshold of the signal device, which satisfies the functionality.
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