mpec SA380-IT, Руководство пользователя

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6 APN The name of the GSM access point the
SA380-IT is to connect to. It is set-up by
the SIM provider.
7 APN Username Many GSM Access Points require
username and password authentication to
allow connection. Change these here.
8 APN Password Many GSM Access Points require
username and password authentication to
allow connection. Change these here.
9 Earth Loop AoC % Sets the "Acquire-on-Change" threshold for
reporting "earth loop resistance" change to
the EAMS (see section 4.10)
10 Earth Loop Alert Level If the earth loop resistance exceeds this
level, the SA380-IT will report a hardware
fault and stop measurement of monitored
circuits.
11 AC Leakage Alert Level If the resistance to earth of any AC
monitored circuit falls below this level, the
SA380-IT will report a earth fault.
12 DC Leakage Alert Level If the resistance to earth of any DC
monitored circuit falls below this level, the
SA380-IT will report a earth fault.
13 Circuit Settling Time (ms) This parameter governs the maximum
allowable time to measure the voltage and
resistance to earth of a individual
monitored circuit.
Ensure that the level is
appropriate for your
organisations needs and
complies with any legal safety
obligations.
Ensure that the level is
appropriate for your
organisations needs and
complies with any legal safety
obligations.
It is up to the user to specify an
appropriate time-out value,
based upon the trade-off
between desired accuracy and
speed of measurement.
The equation for calculating
measurement time per circuit
is: (750,000 x C ) + 0.3 seconds.
E
Where C is the maximum
E
expected capacitance to earth of
the monitored circuit. The
factory default is set at C = 1 F.
E