Toa DP-SP3 - Manual (Page 67)

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Step 3. Perform restriction setting of parameter change for each box.
Select [Edit Box Write Protect...] from the menu while the box is selected in the flow view.
Example: When performing restriction setting of the filter box
13. Dp-Sp3’S MUTE SWITCH lOCk ON/OFF SETTINg
The DP-SP3 unit’s front panel-mounted Mute switch operations can be disabled.
Step 1. Place the PC in communicate with the DP-SP3 of which Mute
switch you want to lock.
Step 2. Select “Option Front Lock On/Off On or Off” from the
menu.
On: Disables the mute switch operation.
Off: Enables the mute switch operation.
If any mute switch is operated when the mute switch operation is disabled, the RUN indicator flashes green.
DP-SP3 RUN indicator
Mute switches