zr_supply_voltage_test

TRANSCEIVER-12: Telemetry: 400ZR Transceiver Supply Voltage streaming.

Summary

Validate 400ZR transceivers report module level internally measured input supply voltage in 100 µV increments as defined in the CMIS.

Link to CMIS: https://www.oiforum.com/wp-content/uploads/CMIS5p0_Third_Party_Spec.pdf

Procedure

• Connect two ZR optics using a duplex LC fiber jumper such that TX output power of one is the RX input power of the other module.
• To establish a point to point ZR link ensure the following:
  • Both transceivers state is enabled.
  • Both transceivers are set to a valid target TX output power example -10 dBm.
  • Both transceivers are tuned to a valid centre frequency example 193.1 THz.

Testbed Type

• Typical test setup for this test is a DUT1 with 2 ports to 2 ATE ports or 2 ports to a second DUT2. For most tests this setup should be sufficient. Ref: Typical ATE<>DUT Test bed
• A and Z ends of the link should have same 400ZR PMD. For this test a single DUT ZR port connected to a single ZR ATE port is also sufficient.

Once the ZR link is estabished proceed with the following:

• verify that the following ZR transceiver telemetry paths exist and are streamed for both the ZR optics.

  • /components/component/transceiver/state/supply-voltage/instant

• If the modules or the devices are in a boot stage, they must not stream any invalid string values like "nil" or "-inf".

• Reported supply voltage value must always be of type decimal64.

• Verify the module supply voltage is reported correctly with optics interface in disabled state.

  • Use /interfaces/interface/config/enabled to disable the interfaces and wait 120 seconds before taking the supply voltage reading again.
  • Verify the module is able to stream the supply voltage data in this state.
  • For reported data check for validity min <= avg/instant <= max
  • If the modules or the devices are in a boot stage, they must not stream any invalid string values like "nil" or "-inf".
  • Reported supply voltage value must always be of type decimal64.

OpenConfig Path and RPC Coverage

paths:
    # Config Parameter coverage
    /interfaces/interface/config/enabled:
    # Telemetry Parameter coverage
    /components/component/transceiver/state/supply-voltage/instant:
        platform_type: ["OPTICAL_CHANNEL"]

rpcs:
    gnmi:
        gNMI.Get:
        gNMI.Set:
        gNMI.Subscribe: