Lightning Audio 7532 - Manual (Page 35)

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7532 Operation
5.2.2 Display symbols
The following table describes the symbols that appear on the liquid crystal display:
Table 1: Meaning of the symbols
Light emitting diodes (LEDs):
There is a green and a red LED besides the Liquid Crystal Display.
Symbols Meaning
ALARM_SYMBOL
This alarm symbol appears when the instrument is in an alarm state. If the symbol
flashes, this indicates a warning.
LOCK_SYMBOL
This lock symbol appears when the instrument is locked,i.e. if no input is possible.
COM_SYMBOL
This communication symbol appears when a data transmission via e.g. HART,
PFOFIBUS-PA or Foundation Fieldbus is in progress.
Calibration to regulatory standards disturbed
If the instrument is not locked or it cannot guarantee the calibration to regulatory
standards, the situation will be indicated on the display via the symbol.
LED Meaning
red LED continuously on Alarm
red LED flashes Warning
red LED off No alarm
green LED continuously on Operation
Green LED flashes Communication with external device