Test device and method
A test device is provided for testing a device under test (DUT) having a control interface compliant with a standard selected from a plurality of standards each supporting a common set of management data input/output (MDIO) and non-MDIO control signals. The test device includes a test interface and an integrated control interface. The integrated control interface adapts to the standard with which the control interface of the DUT complies, so that the integrated control interface directly and fully controls the DUT via at least the common set of MDIO and non-MDIO control signals. The integrated control interface exchanges control signals selected from the common set of MDIO and non-MDIO control signals with the control interface of the DUT to monitor the DUT and thereby obtain status information about the DUT.
1. A method of testing a device under test (DUT) having a control interface compliant with a standard selected from a plurality of standards each supporting a common set of management data input/output (MDIO) and non-MDIO control signals, the method comprising:
coupling the DUT to a test device comprising a test interface and an integrated control interface, by coupling a data interface of the DUT to the test interface of the test device, and by coupling the control interface of the DUT to the integrated control interface of the test device;
adapting the integrated control interface of the test device to the standard with which the control interface of the DUT complies, so that the integrated control interface of the test device directly and fully controls the DUT via at least the common set of MDIO and non-MDIO control signals;
performing a test on the DUT, by exchanging test data signals between the data interface of the DUT and the test interface of the test device, to obtain test results; and
monitoring the DUT throughout the test, by exchanging control signals selected from the common set of MDIO and non-MDIO control signals between the control interface of the DUT and the integrated control interface of the test device, to obtain status information about the DUT.
2. The method according to claim 1 , further comprising:
automatically detecting the standard with which the control interface of the DUT complies.
3. The method of claim 1 , further comprising:
correlating the status information with the test results.
4. The method of claim 1 , further comprising:
internally synchronizing the test interface and the integrated control interface of the test device.
5. The method of claim 1 , wherein monitoring the DUT throughout the test includes continuously sensing non-MDIO control signals and periodically interrogating the DUT via MDIO control signals.
6. The method of claim 1 , wherein coupling the DUT to the test device includes externally connecting the DUT to the test device, by separately connecting the data interface of the DUT to the test interface of the test device, and the control interface of the DUT to the control interface of the test device.
7. The method of claim 1 , wherein the plurality of standards includes C form factor pluggable (CFP), CFP2, CFP4, and Optical Internetworking Forum multisource agreement for a 100 Gbps long-haul transmission module (OIF-MSA-100 GLH) standards.
8. A test device for testing a device under test (DUT) having a control interface compliant with a standard selected from a plurality of standards each supporting a common set of management data input/output (MDIO) and non-MDIO control signals, the test device comprising:
a test interface for coupling to a data interface of the DUT; and for exchanging test data signals with the data interface of the DUT to perform a test on the DUT and thereby obtain test results; and
an integrated control interface for coupling to the control interface of the DUT; for adapting to the standard with which the control interface of the DUT complies, so that the integrated control interface directly and fully controls the DUT via at least the common set of MDIO and non-MDIO control signals; and for exchanging control signals selected from the common set of MDIO and non-MDIO control signals with the control interface of the DUT to monitor the DUT throughout the test and thereby obtain status information about the DUT.
9. The test device of claim 8 , wherein the integrated control interface is also for automatically detecting the standard with which the control interface of the DUT complies.
10. The test device of claim 8 , further comprising:
a common controller, coupled to the test interface and the integrated control interface, for correlating the status information with the test results.
11. The test device of claim 8 , further comprising:
a common timebase, coupled to the test interface and the integrated control interface, for internally synchronizing the test interface and the integrated control interface.
12. The test device of claim 8 , wherein the control interface is for monitoring the DUT throughout the test by continuously sensing non-MDIO control signals and by periodically interrogating the DUT via MDIO control signals.
13. The test device of claim 8 , wherein the test interface includes one or more connectors for externally connecting the data interface of the DUT; and wherein the integrated control interface includes one or more connectors for externally connecting the control interface of the DUT.
14. The test device of claim 8 , further comprising:
a remote control interface for coupling to an external control device.
15. The test device of claim 8 , wherein the plurality of standards includes C form factor pluggable (CFP), CFP2, CFP4, and Optical Internetworking Forum multisource agreement for a 100 Gbps long-haul transmission module (OIF-MSA-100 GLH) standards.