Fiber optic tester

A fiber optic tester operable to test an optical circuit having a plurality of termination points, the tester comprising:

• a plurality of light ports operable to transmit and receive light, each light port comprising—
• a light transmitter operable to transmit the light,
• a light receiver operable to receive and convert the light into a receiver voltage,
• a light monitor operable to receive and convert the light into a monitor voltage, and
• a coupler operable to split the light transmitted from the light transmitter between the light monitor and one of the termination points;
• and
• a processing unit operable to calibrate the tester by measuring internal attenuation characteristics of the fiber optic tester and attenuation characteristics of an interface connector and storing the measured characteristics in a tare log, and operable to analyze differences between the receiver voltage and the monitor voltage by adjusting the receiver voltage and the monitor voltage according to values stored in the tare log and comparing the adjusted values.

A fiber optic tester operable to test an optical circuit having a plurality of termination points, the tester comprising:

• two light ports operable to transmit and receive light, each light port comprising—
• a light transmitter operable to transmit the light,
• a light receiver operable to receive and convert the light into a receiver voltage,
• a light monitor operable to receive and convert the light into a monitor voltage, and
• a coupler operable to split the light transmitted from the light transmitter between the light monitor and one of the termination points;
• an optical switch for selectively connecting a first light port to one of a first plurality of optical circuit termination points and for selectively connecting a second light port to one of a second plurality of optical circuit termination points, wherein the optical switch comprises a single pole multi-throw optical relay connected to an optical coupler of each of the light ports;
• and
• a processing unit operable to calibrate the tester by measuring internal attenuation characteristics of the fiber optic tester and attenuation characteristics of an interface connector and storing the measured characteristics in a tare log, and operable to analyze differences between the receiver voltage and the monitor voltage by adjusting the receiver voltage and the monitor voltage according to values stored in the tare log and comparing the adjusted values.