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IP258
9
The MSM400 is wall mounted: the lower
section of the housing is for cable connections,
and the upper part has the 4 line LCD and
keypad controls. The whole unit is IP65.
Typically the display will show as in Figure 7,
the top line shows whether the programme lock
is open together with the time display. The
actual value is displayed in the centre. The
attenuation figure in decibels is on the bottom
line.
Figure 6 : Typical MSM400 liquid crystal display
Additional flags on the display show the status of the two relay outputs, RL1 and RL2 ,and of the digital control
inputs into the MSM400.
KEYPAD OPERATION :
There are 6 buttons on the MSM400 front panel, the four ARROWS allow navigation around the programming menu
and the " ESC" and "ENT" buttons allow movement from one screen to the next. By pressing "ESC" repeatedly, the
screen will always return to the normal display as shown in Fig 7. Movement through the menu structure using the
arrows is shown by the titles being "highlighted", ie reversed to showing white letters on a black background. The LCD
is backlit for operator convenience. (This can be turned off if required).
Figure 5 : MSM400 keypad and LCD display
3.0 CONTROL UNIT
3.1 MSM400 DISPLAYS AND KEYPAD
RL2
RL1
03.09 0
4.6 %
46.3dB
1
2
Display 1
Display 2Display 3