Exfo FVA-3150 Variable Attenuator Instrukcja Użytkownika Strona 22

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Setting Up Your Variable Attenuator
16 FVA-3150
Locking Control Key Access
Locking Control Key Access
To prevent unintended use of the FVA-3150 Variable Attenuator during
operation, you can lock the control keys (the blue buttons on the front
panel of the unit).
To lock the control key access:
1. Press the Setup button.
2. Use the left/right arrows until LOCKOUT is displayed.
3. Press ENTER.
The LOCKED message is briefly displayed, then the unit reverts to the
settings that were active before you entered the Setup menu. All control
keys are deactivated.
To unlock the keypad:
1. Press the Setup button.
2. Press ENTER.
The UNLOCKED message is briefly displayed. All control keys are
reactivated.
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