ABB ETL600 - Page 280

Revision:
A
Language:
EN
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4/7
1KHW001492-EN
5. Click Tune Tx RF filter to get the Tuning Tx RF filter dialog box.
6. Check if the correct filter center frequency f0 and bandwidth are shown.
7. For tuning the coil L1 in the lower rack set the adapter P3LL to:
• FUNCTION : A
• Position of S1 : L1, FILTER
• Position of S2 : TUNE
• Position of S3 : OFF
• Position of LOAD : LINE
Click Activate f1. Using coil L1, U
output
is tuned to a minimum or if an end stop is reached go
to
Step A1.
8. For tuning the coil L2 in the lower rack, the combiner (P3LG) in the upper rack must be
removed. Settings on the adapter P3LL:
• FUNCTION : A
• Position of S1 : L2, FILTER
• Position of S2 : TUNE
• Position of S3 : OFF
• Position of LOAD : LINE
Click Activate f2. Using coil L2, U
output
is tuned to a minimum or if an end stop is reached go
to
Step A1.
9. For tuning the coil L1 in the upper rack, the Tx RF filter (E5TX) in the lower rack must be
removed. Also remove the connections from the transmit filter to connectors X171 (black) and
X174 (orange) on the upper rack (backplane P1LA). Reinsert the combiner (P3LG) and the Tx
RF filter (E5TX) in the upper rack. The RF hybrid remains plugged on the Tx tuning adapter
P3LL.
Settings on the adapter P3LL:
• FUNCTION : A
• Position of S1 : L1, FILTER
• Position of S2 : TUNE
• Position of S3 : OFF
• Position of LOAD : LINE
Click Activate f1. Using coil L1, U
output
is tuned to a minimum or if an end stop is reached go
to
Step A1.
10. After tuning: Reinsert the connections to the connectors X171 (black) and X174 (orange) on
the upper rack (backplane P1LA).
11. For tuning the coil L2 in the upper rack, the Tx tuning adapter is inserted in place of the
combiner (P3LG) in the upper rack and the combiner is plugged on top of it. The Tx RF filter
(E5TX) and the RF hybrid in the lower rack must be removed.
Settings on the adapter P3LL:
• FUNCTION : A
• Position of S1 : L2, FILTER
• Position of S2 : TUNE
• Position of S3 : OFF
• Position of LOAD : LINE
Click Activate f2. Using coil L2, U
output
is tuned to a minimum or if an end stop is reached go
to
Step A1.
12. Terminate the action by clicking deactivate frequency and to return to the Tuning & testing
main menu click Cancel.
13. Now remove the tuning adapter and reinsert all the units as before.