ETL600 1KHW001489-EN ABB Switzerland Ltd
• Status:
•
Off: the modem is not operational, communication is
interrupted;
•
On – disconnectable: the modem is operational,
communication will be interrupted during transmission of a
teleprotection command;
•
On - non disconnectable: the modem is operational and
communication will not be interrupted during transmission of a
teleprotection command.
•
AF:
The data rate and bandwidth that have been set in the V.24 port
configuration dialog box are displayed for information.
The desired center frequency can be selected in steps of 60 Hz,
except for modems with 1’200 Bd and 9’600 bps where the center
frequency is preset.
•
AF channel sharing operation:
When checked, a weight of 0 is associated to the corresponding
NSK600 modem signal. This allows different NSK600 modems to
share one AF channel when higher level protocols insure that
these modems are not transmitting at the same time.
For AF channel sharing of different NSK600 modems, all modems
except one need to have this box checked.
Note:
For AF channel sharing of different NSK600
modems, all modems except one need to have this
box checked.
•
Receive clock recovery:
This feature allows regeneration of transparent transmitted data for
data transfer rates lower than 2400 bps (FSK modems). For 2’400,
4’800 and 9’600 bps (DAPSK modem), clock recovery is
automatically done. The following possibilities are available:
•
On;
•
Off.
Note:
FSK modem data regeneration is only possible when
data transfer rate corresponds to the selected
nominal datarate.
Particularly for transit applications, this feature should be enable in all
transit stations. For details about data regeneration, refer to section
3.5.1.1.
5.3.5.5. MOD600 modem
Point to Configuration / MOD600 … to open the dialog box for
configuration of the MOD600 modems. To modified the bandwidth for
the modem refer to section 5.3.1.1.
Configuration and Set-up November 2005 5-29
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