Enable/Inhibit Tripock Device

Question 1

Enable Tripcock Device

Answer 1

ETD is used to exit a migration boundary, forcing the latch relays into tripcock mode.

Question 2

Inhibit Tripcock Device

Answer 2

ITD is used to enter a migration boundary, forcing the latch relays into CBTC mode.

Question 3

Entering a CBTC area

Answer 3

1. Move MCS to inter.
2. Plug the ITD into the socket in the active cab under the VOBC.
3. Ensure the red wrong mode light is lit on the ITD.
4. Press the override button and ensure the yettlow correct mode light is lit.
5. Unplug the ITD.
6. Ensure brakes do not release in tripcock mode.

Question 4

Leaving a CBTC area

Answer 4

1. Move the MCS to inter.
2. Plug the ETD into the socket in the active cab under the VOBC.
3. Ensure the red wrong mode light is lit on the ETD.
4. Press the override button and ensure the yettlow correct mode light is lit.
5. Unplug the ETD.
6. Ensure the brakes release in tripcock mode.