Omega Speaker Systems VR200 - Manual (Page 23)

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2.3.12 Message Writing(for the VR 200 with style number 2 or higher)
Command Function
MEp1 Selects message number for which parameter set values to be
displayed and the information file is saved.
2.3.13 Display Switching(for the VR 200 with style number 2 or higher)
Command Function
UM0 Trend display
UM1 Bar graph display
UM2 Digital value display
UM3 Information display
UM4 List display