User Manual

MCA9129-90-A Installation & Service Manual

044-05060 Rev. C 2-3 July 2001November 2002

for loss or damage may not be withheld from any payment to Powerwave, nor may any payment

due be withheld pending the outcome thereof. WE CANNOT GUARANTEE THE FREIGHT

CARRIER'S PERFORMANCE.

2-6 Installation Instructions (Refer to figures 1-1 and 2-1)

The MCA9129-90MCA9129-90-A amplifier module is designed for installation in a subrack that

permits access to the rear of the subrack for connection of DC power, RF, and monitor cables.

To install the amplifier proceed as follows:

1. Install the amplifier subrack in the equipment rack and secure in place based the subrack

installation manual instructions.

2. Connect the antenna cable to the output of the subrack.

3. Connect the transceiver output(s) to the input of the subrack. Refer to tables 1-1 and 1-2 for

proper RF input levels.

4. Connect the alarm cable(s) to the subrack.

WARNING

Verify that all circuit breaker switches supplying power to the subrack are in the OFF

position. Turn off external primary DC power before connecting DC power cables.

5. Connect positive primary power and negative primary power to the subrack. Tighten the

subrack power connections.

WARNING

Do not slam amplifiers into the subracks. Forcing the amplifier into the subrack at too

fast a rate may cause the pins on the 21-pin D-sub connector of the amplifier to be-

come recessed or broken. The use of too much force while installing the amplifier

may also cause the splitter / combiner module of the MCR4109-1 to become poorly

aligned resulting in the inoperation of an amplifier installed in one of the two outer

slots.

6. Inspect the 21-pin D-sub connector on the rear of each amplifier before inserting it into the

subrack. Verify that all pins are straight, no pins are recessed, and the alignment shield is

not bent. At the front of the subrack, install the plug-in amplifier modules.

7. After verifying that the front panel power ON / OFF switch is in the OFF position, gently install

the plug-in amplifier modules in the subrack. Tighten top and bottom thumbscrews until they

are finger tight. Use a slotted screwdriver to tighten the thumbscrews an 1/8

to a 1/4 turn

past finger tight.

8. Check your work before applying DC voltage to the system. Make certain all connections are

tight and correct.

9. Measure primary DC input voltage. DC input voltage should be +27 Vdc ±1.0 Vdc. If the DC

input voltage is above or below the limits, call and consult Powerwave before you turn on

your amplifier system.

10. Refer to section 3 for initial turn-on and checkout procedures.