General; Designations; Filter Programming; Steps For Determining The Required Jumper Positions - ABB ETL600 Instruction Manual

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1

General

In the ETL600, the Tx filter E5TX is tuned using the Tx tuning adapter P3LL and the HMI600.
However before starting tuning, the filter has to be programmed using the correct jumper combi-
nation (given by HMI600) to get the required frequency response. The frequency response of the
filter depends on whether the Tx and Rx channels are adjacent or separate and whether the equip-
ment is a single channel device or provides more than one channel. The HMI600 suggests the
corresponding configuration for the Tx filter according to the mentioned cases above.
Refer to section 5 of the ETL600 instruction manual for more details on configuration.
1.1

Designations

B = Tx filter bandwidth (8, 16 or 32 kHz)
Tx
Fo = Tx filter center frequency
2

Filter programming

The filter must be programmed with jumpers. With the jumpers, the mode of the coils (series or
parallel connection) and the required capacitors are selected.
The required jumper settings for the Tx filter are generated in the HMI600, according to the chosen
center frequency and nominal bandwidth. To set the required jumpers, the two filter prints have to
be taken out of their housings.
On the back side of the E5TX unit: remove the four small screws in the corners of both filter print
covers. Carefully pulling at the cover, take out the filter prints.
2.1

Steps for determining the required jumper positions

1. If not already done, switch on the power of the ETL600, start up the HMI600 on the PC, log on
to the local ETL600 using equipment ID 0 and Read & write access, Upload configuration
as well as Upload status enabled.
2. On the Equipment menu click Tuning & testing.
A warning message box appears, informing that the normal operation of the link will be
interrupted.
3. Click OK to get the Tuning & testing dialog box.
4. Click Tune Tx RF filter to get the Tuning Tx RF filter dialog box and click Default in the Tx
RF filter characteristics field to update the filter center frequency f0 and bandwidth
according to the configured Rx nominal frequency and nominal bandwidth (see Configuration
menu). If the filter settings have been saved previously, the Default button has not to be
pressed.
5. Check if the correct filter center frequency f0 and bandwidth is shown. If these values shall be
modified, select them from the drop down lists.
6. Place the jumpers according to the table Jumper settings E5TX (Transmit filter) shown in
the HMI600. Cs1 settings are for the L1 filter print and Cs2 for the L2 filter print. Settings Cp
and L-mode apply for both prints. "0" means no jumper, "1" means jumper placed.
Note:
7. Click Ok to add the filter settings to the equipment configuration, to discard them click Cancel.
In the context of this instruction, a programmed jumper consists – wherever
this is possible – physically of two short circuit connectors that have to be put
at the same programming position, one on top of the other.
Language: Page:
EN 2/7
1KHW001492-EN