USER MANUAL – Z-GPRS2-SEAL / Z-LOGGER-SEAL
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GSM Signal
GSM signal [dBm]
0 (MINIMUM)
-115
1
-106
2
-97
3
-88
4
-79
5
-70
6
-61
7 (MAXIMUM)
-52
Where 0 it’s the minimum, and 7 it’s the maximum.
For correct ftp or email log operations the minimum required field level is 2/7 (please remember
that the signal often fluctuates).
For SMS operations only the minimum required field level is 2/7.
Refer to the following table for signal values:
SIGNAL LEVEL 0 = NO SIGNAL (INSUFFICIENT)
SIGNAL LEVEL 1 = INSUFFICIENT SIGNAL (NOT RELIABLE FOR SMS AND GPRS)
SIGNAL LEVEL 2 = SUFFICIENT SIGNAL (MINIMUM SIGNAL FOR SMS AND GPRS)
SIGNAL LEVEL 3 = RELIABLE SIGNAL (RELIABLE FOR SMS AND GPRS)
SIGNAL LEVEL 4 = GOOD SIGNAL
SIGNAL LEVEL 5 = VERY GOOD SIGNAL
SIGNAL LEVEL 6 = OPTIMAL SIGNAL
SIGNAL LEVEL 7 = EXCELLENT SIGNAL
To increase the GSM signal level, Seneca provides various GSM antenna models for Z-GPRS2 to
reach the minimum signal level in most situations.
Visit (www.seneca.it) or refer to the general catalogue or contact Seneca srl for further
information.
Battery Charge
will show the actual battery charge, if the value it’s below 2/7 you must wait at
least 24h for a full recharge before use Z-GPRS2/Z-Logger power backup.
