Test Circuits; Test Circuit For 40 W Units; Test Circuits For 80 W Units - ABB ETL600 Instruction Manual

Revision:
A
5

Test circuits

The following circuits should be used for tuning the Tx RF filter using the tuning adapter P3LL and
the HMI600. The P4LT/P4LU generates the required tuning tones.
5.1

Test circuit for 40 W units

P4LT/U
Fig. 1: Test circuit for tuning 40 W units. Tuning coil L1 or L2 dependent on switch S1.
5.2

Test circuits for 80 W units

P4LT/U
Fig. 2: Test circuit for tuning L1 in the lower power amplifier rack.
P1LA E5TX
U
OUTPUT
P1LA
P1LA E5TX
U
Language: Page:
EN 6/7
L2 OFF
L1
FILTER
S1
OUT
S2
TUNE
FILTER
P3LL
P3LG
L2
L1
FILTER
P3LL
OUTPUT
1KHW001492-EN
ON
S3
P3LE
600134A3.VSD
OFF ON
S1
S3
P3LE
OUT
S2
TUNE
FILTER
600134A4.VSD