Which actions are required to complete arming two-way telemetry?

Which actions are required to complete arming two-way telemetry?

• A. Enter the EOT ID into the head-of-train device and press the TEST button on the EOT.
• B. Press the TEST button on the EOT only.
• C. Enter the EOT ID into the head-of-train device, press the TEST button on the EOT, and power cycle the head-of-train device.
• D. Power cycle the head-of-train device and then enter the EOT ID.

Answer: (C)

Two-way telemetry needs a deliberate arming sequence so the head-of-train device and the End Of Train unit are synchronized and able to exchange data. The correct steps are: first enter the EOT ID into the head-of-train device to identify which EOT you’re pairing with; then press the TEST button on the EOT to initiate its test signal and establish that the EOT is responsive; finally power cycle the head-of-train device to reset its state and commit the arming so the two devices recognize each other and can communicate. If any step is skipped, the system may not properly pair or recognize the EOT, preventing reliable two-way telemetry. Entering the ID ensures the HOT knows which EOT to pair with, triggering the EOT test confirms the EOT is active, and cycling power on the HOT reinitializes the link so the arming takes effect.

Two-way telemetry needs a deliberate arming sequence so the head-of-train device and the End Of Train unit are synchronized and able to exchange data. The correct steps are: first enter the EOT ID into the head-of-train device to identify which EOT you’re pairing with; then press the TEST button on the EOT to initiate its test signal and establish that the EOT is responsive; finally power cycle the head-of-train device to reset its state and commit the arming so the two devices recognize each other and can communicate. If any step is skipped, the system may not properly pair or recognize the EOT, preventing reliable two-way telemetry. Entering the ID ensures the HOT knows which EOT to pair with, triggering the EOT test confirms the EOT is active, and cycling power on the HOT reinitializes the link so the arming takes effect.