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2. INSTALLATION
2-1. Unpacking and Initial Inspection
N O T E
Before you start any action on installing the splitter / combiner, thoroughly read through this
manual. First, carefully inspect the cardboard carton and its content for physical damage. If
damage is noticed, notify your dealer immediately. Delay may infringe carrier's warranty
conditions. Keep all packing for possible future transportation!
2-2. Preparation of the system units
N O T E
The three amplifiers used with the ACOM3x2000A splitter / combiner should all be of same type
and with same settings, which can affect their gain or voltage selector for instance.
The device is designed to be used with three ACOM2000A automatic amplifiers, but it could be used
also with three ACOM1200
,
ACOM1000, ACOM1010 or ACOM1011 manual tune amplifiers.
N O T E
The transceiver used should produce enough power to drive the three amplifiers, i.e. triple the
drive power required by each amplifier for the needed output. Add some overhead due to the
losses in the system. For instance ACOM2000A requires about 60W drive, therefore the
transceiver should be able to put out 200 W for full output.
2-3. Mounting of the rack option
W A R N I N G
If you use the rack option, be sure to first place an amplifier on the lowest rack level in
the following manner:
Release the two drawer latches on the rear, pull out the drawer, place the amplifier on
it, slide back the drawer and lock the two latches. Afterwards, place the other two
amplifiers in the same way. During an operation, all drawers must be locked and the
wheel brakes engaged.
2-4. Connections
C A U T I O N
We recommend you
use the supplied coaxial cables for the RF connections between the splitter /
combiner and the amplifiers. If you have to use other coaxial cables, please note that the three
coaxial cables going to the amplifier inputs should be the same length, as well as the three coaxial
cables connected to the amplifier outputs. Any difference in lengths would cause a phase
imbalance of the system thus excessive power loss and tripping of the protection circuit.