400G and 800G technologies, and their transceivers, are power-hungry and require substantial current to operate within specs. Because certain test configurations draw more current than the RXT-1202's Li-ion batteries can safely deliver, those configurations currently require having the high-power AC/DC adapter connected. Examples include:
- The RXT-6402, RXT-6802 and RXT-6811 may run a single 400G test on batteries. However dual 400G tests require them to be connected to the AC/DC adapter.
- The RXT-6802 and RXT-6811 require to be connected to the AC/DC adapter in order to run single or dual 800G tests.
- Extended-reach coherent transceivers, such as ZR and ZR+, also have high power and heat-dissipation requirements. We therefore recommend keeping the test set connected to its AC/DC adapter when using them.
If the selected test mode exceeds the test set’s current-handling capacity, it will prompt you to connect the AC/DC adapter before launching the application.
If the external AC/DC adapter is disconnected during a high-current test, the test set will shut down the test module, display a notification explaining the power requirements, and instruct you to reconnect the adapter and reboot the test set before continuing.
For power-hungry applications at 100G and above, battery operation is primarily a convenience and workflow benefit rather than a means of extending test autonomy. Even if the test set must remain connected to the AC/DC adapter to run these high-speed tests, battery power makes it easier to move idle instruments between tests—from one side of an equipment room or data center to another—without shutting them down and waiting for them to reboot. It helps save time.