R.V.R. Electronica discovery, User Manual

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DISCOVERY
21 / 44 User Manual Rev. 2.1 - 27/11/03
7. External description
This chapter describe the elements of the DISCOVERY front and rear panel.
7.1 Front Panel
Figure 6.1
[1] CH1 LED indicating, when it lit, the measure of the level on channel CH1
[2] CH2 LED indicating, when it lit, the measure of the level on channel CH2
[3] Brightness Trimmer of regulation of the contrast of the display
[4] MAN LED indicating, when it lit, the manual commutation of the channels.
This operation mode allows changing operation data relevant to
DISCOVERY if they have been previously enabled. When the manual
LED is on, exchangers are frozen up to the automatic mode reset.
[5] CHANGE LED indicating, whrn it lit, that the channel defined as priority channel
is not sent to the output stage.
[6] FAULT LED indicating, when it lit, that no channel among those programmed
has the required features for being sent to the output stages. In case
such a situation occurs, commutating devices are disconnected and
inputs definied as Fault tollerance are automatically connected to the
output stages.
[7] MPX1 LED indicating, when it lit, the measure of the level on channel MPX1
[8] MPX2 LED indicating, when it lit, the measure of the level on channel MPX2
[9] Display LCD dIsplay. The display usually visualizes the channel sent to the
output stages the display is of analogue type with scrolling bar. Two
vertical small bars show the dB zero level. the display is porvided with
backlighting that automatically goes off after two minutes that the
keyboard is not used.
[10] AUT Selector to change the automatic/manual mode. The selector may be
of two types: stable or unstable. When the unstable model is
installed, the automatic mode reset takes placed after 15 minutes.
[11] ESC Button used to exit from a menu
[12] LEFT/UP Button used to navigate in the menu system and to modify the
changeable parameters
[13] RIGHT/DOWN Button used to navigate in the menu system and to modify the
changeable parameters
[14] OK Button used to accept a parameter’s value or to enter into a menu
[15] RS232 DB9 female connector for the auxiliary data communication