ETL600 1KHW001489-EN
ABB Switzerland Ltd
the output level of the external device. Recommended values are
–6.0 dBm or less.
Note:
This input level must be configured as output level at
the other AF port connected to this AF port of the
other equipment. It is a good rule to configure the
input and output levels of all connected AF ports to
the same value.
12. Select either the unit
dBm (RMS)
or
dBm (PEP)
. HMI600 knows
and considers the peak to average ratio for many applications.
If you are not sure of selection, you should select dBm (RMS).
Note:
The unit dBm
(RMS) or dBm
(PEP) must be
configured as unit of the output level at the other AF
port connected to this AF port of the other equipment.
It is a good rule to configure the unit of all connected
AF ports to the same value. Different selection at the
both connected AF ports can lead to a clipping end
amplifier!
Configure output level:
13. Click
Next
to configure the output port characteristics.
14. You have to select as
Output level
the input level of the connected
AF port of the other equipment.
15. You should also check all other signals in the list ‘
Signals after
selected filter
’ displayed in the ‘Output’ sheet , which are present
at the output port. Signals rejected by the transit filter must not be
selected. E.g. don’t select the pilot!. The
Max. output level
shall
not exceed 4.0 dBm (PEP). If the
Max. output level
is too high,
you have two possibilities to solve the problem. Either you reduce
the output level or you insert an appropriate output filter at this
output port to filter away some of the signals, thus reducing the
number of signals to be checked in the list '
Signals after selected
filter'
of the
'Output'
-sheet.
16. Click
Finish
.
Finish the configuration of AF ports:
17. Close the sheet Configure Teleoperation, ext. teleprotection’ by
clicking OK.
5.3.4.5.
Configure teleoperation port used for external teleprotection
If teleprotection signals are routed through input or output filters, the
additional time delay introduced by these filters in the order of ms must
be taken into account.
The proposed default weight of the port can be changed as described
in 5.3.4.2 or 5.3.4.3 by choosing “Other signals” as Reference signal.
5.3.5. Configure
Data
Communication
Point to
Configuration / Services… / Type
to set number of APLC
channel with bandwidth as well as bandwidth for the DPLC channel.
Configuration and Set-up
November 2005
5-23
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