Grass Valley PLS200 - Manual (Page 40)

Chapter 1 Installing the Hardware
18 PLS200 Library Installation and Operation
Set the Write-protect Switches
Make sure the write-protect switch on each data cartridge is set appropriately
(see Figure 1-13). You can use a ball-point pen or similar instrument to move
the write-protect switch. If the write-protect switch window is red, the cartridge
is write-protected.
Figure 1-13 Setting the write-protect switch on a data cartridge