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Operation
© Gyr
D000043188 en d
– E65C – CU-P40, P41, P42 – User Manual
5.3
Wrong PIN code
If all LEDs are fast blinking (0.5 s on/0.5 s off), an incorrect PIN code has
been parameterised for the SIM-card used. In this case, the user must set
the correct PIN code before restarting the module by power cycling the CU.
Please note that after three attempts with the wrong PIN code (which can
be triggered by 3 power cycles of the CU) it will require the use of the PUK
code to enable further PIN code attempts. The user can deactivate the PIN
code of the SIM-card with a mobile telephone.
5.4
Signal strength indication using LEDs
In certain states, the LEDs RX and TX indicate the signal strength as
follows:
Reception level
Field strength level
RX
TX
Level 1 (inadequate)
<
–99 dBm
off
off
Level 2 (sufficient)
–99 dBm ... –90 dBm
off
on
Level 3 (good)
–89 dBm ... –80 dBm
on
off
Level 4 (very good)
>
–80 dBm
on
on
