The Star Ship is equiped with deflector shields. When energy is supplied to the shields they have the capability to absorb energy that otherwise would damage the Space Ship. So the shields can decrease the destructive effect of a (photon) torpedo, a phaser blast or any other object. When energy is supplied to shields they are said to be 'raised'. The Star Ship has six separate shields: fore, aft, top, bottom, port and starboard. The Tactical Computer can supply energy to all shields (with constitutes of an average setting), or supply energy to just one specific shield.

Set deflector shield(s) strength
| TFR Function code Location code EXEC | deflector shield subsystem command |
|---|---|
| set all deflector shields to an average setting | |
| set the operational setting of a specific shield * see port table for specific locations |
The next step is to assign power to the selected deflector shield (or all).
With the keypad you can enter a new setting.
To correct an entry you press the red "*" key.
This key backs up to the entry of the previous entered digit.
When the entry is at the first digit, the "*" key effectively cancels the "Set deflector shield(s)" command.
When the new set value is correct press the grey "X" key on the Tactical Keypad to execute the command. The shield(s)
will be set to the new value, if possible. When the new entered value is higher than the currently possible operational status the shield(s) will be set to the maximum available operational status.
A message is shown in the status line on the CRT:
("shield set to functional maximum available").
After the command is executed the Tactical Entry Display is blanked. The Shields Display is updated automatically.
Show deflector shield(s) strength
| show averaged operational setting of all shields | |
| show operational setting of a specific shield * see port table for specific locations |