Powerwave Technologies Inc. KRB1011108 Manuale Utente

Pagina di 42
© 2001 – Ericsson Amplifier Technologies Inc.
11
2.7  Cable Interconnections
WARNING
ENSURE THAT ALL DC AND RF POWER TO THE
SYSTEM IS DISABLED BEFORE MAKING ANY
CONNECTIONS.  OPERATOR INJURY AND/OR
EQUIPMENT DAMAGE CAN RESULT FROM CARELESS
ERRORS DURING WIRING.
All DC cable interconnections are accomplished at the front of the subrack.  Affix the
DC cable lugs onto the terminal block studs.  Note that the positive terminal blocks
have 3/8” studs and the negative terminal blocks have ¼” studs.
NOTE
DC cables should be a minimum of 6 AWG.
Using a 9/16” wrench for the positive connections and a 7/16” wrench for the ground
connections, tighten each nut until the DC cables are securely in place.  Note that the
maximum torque rating for the positive (3/8” stud) blocks are 150 lb in and 80 lb in for
the negative (1/4” stud) blocks.  See Figure 4 and Table 5 for proper cable positioning
on the terminal block.
Connect the RF input to the SMA female connector located on the left of the front
plane.  Using a 5/16”, open ended wrench, tighten the connection until it is snug.
Connect the RF output cable to the N female connector located to the right of the  RF
input connector.  Using a set of connector pliers, tighten the connection until it is snug.
Connect the 15 pin male connector to the I/O interface located on the rear of the
subrack.  Using a small flat head screw driver, tighten the two retaining screws on the
sides of the I/O connector.
CAUTION
Do not connect dc power to the subrack assembly until
proper DC supply voltages have been verified.  Damage
to the subrack assembly can occur if improper voltages
are applied.