
Description of the Units
Hardware Manual • Doc.-No.: C.3010.21 / Rev. 1.3
CAN-CBM-Clock
Page 18 of 34
3.4 LED Display
Function
Name
Colour
Indicator
State
Meaning
Power
LED142
green
off
Module is off
on
Module is on
Bit rate
mode
LED141
yellow
off
Module is off or bit rate setting mode is inactive
blinking
DCF77 Operation:
LED flashes in the clock pulse of the DCF77-signal
- short blinking followed
by a long off phase:
incorrect signal
- short turning off followed
by a long on phase:
correct signal
GPS Operation:
Reception of a valid time telegram ($GPRMC)
on
Bit rate setting mode is active
Failure
LED140
rot
off
Module off or no failure
on
Failure, no bit rate is set
Table 8: Meaning of the indicator states of the LEDs