MMF VM30-H, Инструкция по эксплуатации, Страница: 22 / 58

8. Display
The VM30-H has a graphical LCD with a resolution of 32 x 120 dots. It displays clearly the
measuring values of three channels simultaneously including units and additional information.
Pressing the LIGHT key switches on the backlight. By repeated key press the light is switched
off again. Otherwise the light switches off automatically after 30 seconds. Please note, in order
to save battery power, use the backlight only when necessary. It increases the total current
consumption by 30 %.
A typical display in the measuring mode is shown in Figure 10.
Figure 10: Display in the measuring mode
Depending on the connected sensor, one, two or three measuring values are displayed side by
side. Below you will find the respective channel identifier (X / Y / Z) and the measuring units
alternating with the display modes.
The messages
GAIN UP and GAIN DOWN instead of the measuring value indicate a change in
the measuring range by the autoranging function. The VM30-H may also display OVER LOAD
instead of the measuring value.
The selected filter type is displayed in the center above the measuring results. If one of the
averaged display modes eVDV or A(T) has been selected, a message Overload can appear
instead of the filter type if an overload condition occurred during the entire duration of
measurement.
In the upper left corner you can see the number of stored values in the memory. In the data
logger mode this number is incremented each time the instrument saves a measuring value. The
number alternates with the duration of measurement if one of the averaged display modes eVDV
or A(T) is measured.
The battery indicator is in the upper right corner. If the battery is fully discharged, the message
Bat! is indicated accompanied by a beep sound.
17
Record number in
memory and duration
of measurement
for eVDV and A(T) Filter type and
overload during the
measuring time for
eVDV, Ahv and A(T)
Battery indicator
"Ext." for external supply
Measuring values
X / Y / Z
Units alternating
with display modes