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RF Input
The specified maximum input signal level should be observed to avoid damaging the Rx low-noise
amplifier (LNA).
Tx Inputs
Tx inputs from the network base stations use N (female) connectors. For optimum performance, 50
Ohm terminations should always be fitted to any unused Tx Input ports.
Rx Outputs
Rx outputs to the network base stations use BNC (female) connectors. For optimum performance,
50 Ohm terminations should always be fitted to any unused Rx Output ports.
Cabling and Connections
Please ensure that all cabling is installed using good quality cable types. For all RF cabling, double-
screened or solid-screen coaxial cable types are recommended for optimum performance. For
connection integrity, the use of coaxial adapters should be avoided. All coaxial, DC power and alarm
connectors should be checked for correct termination to their associated cables, Coaxial cable
connectors should be firmly tightened when cables are installed. DC and Alarm cable connectors
should have their securing screws used to ensure secure connector mating is maintained.
PIM Management
The antenna output of the MSC is a multi-carrier RF path. As such, good quality silver-plated
double-screened or solid-screen coaxial cable types, and appropriately rated lightning protection
devices and antennas are recommended for the reduction of Passive InterModulation (PIM).
Lightning Protection
A multi-carrier compatible lightning protector should be fitted to the antenna system connected to
the MSC. In conjunction with correctly installed Earthing, this lightning protection device will assist
in protecting the MSC, and the network base station equipment connected to it, from hazardous
and transient voltages.
Green Power LED
The green LED on the rear of the MSC is active when external power is present. If the green LED is
not illuminated then either there is no DC power present or the polarity is incorrect.
Red Fault LED
The red LED on the rear of the MSC will illuminate under the following circumstances;
•
The DC input voltage is too low.
•
The LNA's internal amplifier currents are outside their normal operating range.
Operating Precautions
•
There is no On/Off switch on the unit. It becomes active as soon as DC power is
connected or the AC plug pack is switched on at the AC outlet.
•
Do not operate the unit outside its stated specifications.
•
Do not open the MSC as there are no user-serviceable parts or adjustments inside. Faulty
equipment should only be repaired by qualified technical personnel – or returned to the
supplier for repair.
OPERATION
User Manual and Help
For more detailed information on the MiniSystem
Combiner (MSC), refer to the MiniSystem Combiner
User Manual - or contact your nearest Sales Office.
www.rfi.com.au
SPECIFICATIONS
Model MSxxxx-0y05-SP
1313
1314
Frequency Range (MHz)
132-142
138-148
Tx Channel Capacity
≤2 (2 Channel Models) ≤4 (4 Channel Models)
Tx Input Power
Tx Duty Cycle
Tx-Tx Bandwidth
Tx Insertion Loss
<6dB (2 Channel Models) <9dB (4 Channel Models)
Tx-Tx Isolation
Tx Input Return Loss
Tx-Antenna Isolation
4MHz
4MHz
Tx-Rx Separation
min.
min.
Tx-Rx Isolation
Rx Channel Capacity
≤2 (2 Channel Models) ≤4 (4 Channel Models)
Rx-Rx Bandwidth
Rx System Gain
Rx-Rx Isolation
Rx LNA Noise Figure
Rx Max. RF Input Level
Rx Output Return Loss
Impedance
Alarms
Alarm Outputs
Alarm Relay Ratings
RF Connectors
Tx = N (female) Rx = BNC (female) Antenna = N (female)
DC Connector
Alarm Connector
Enclosure
DC Power Requirements
+11VDC to +28VDC 3.5W typ. (polarity protected)
Grounding
IP Rating
Operating Temperature
Dimensions (HxWxD)
Weight
18.5Kg / 40.7lbs (2 Channel Models) 22.5Kg / 49.5lbs (4 Channel Models)
Notes:
xxxx in the model number denotes the frequency sub-band. (i.e. '1516' = 156 to 166MHz)
y in the model number denotes the channel capacity. (i.e. 2 = '2' Channel, '4' = 4 Channel)
1415
1516
1517
1616
148-158
155-165
151-172
160-170
≤ 50Watts
≤ 100%
1.0MHz
>60dB typ.
>20dB
>50dB
4MHz
4MHz
21MHz
4MHz
min.
min.
min.
min.
65dBmin. (70dB typ.)
1.0MHz
0dB to 30dB (in 1dB steps)
>18dB
1.2dB typ.
-10dBm
>20dB
50 Ohms
DC Supply Voltage Low, Rx LNA Fail
Dry Relay Form-C (N.C. / N.O. / CMN)
50VDC 1A max.
2pin 5mm Phoenix (mating plug supplied)
3pin 5mm Phoenix (mating plug supplied)
7RU 19in Rack Mount (Black)
5mm and 6mm stainless steel studs
Indoor Use Only
-30° to +60°C -122° to +140°F
133x483x430mm 5.23x19x17in
1617
164-174
4MHz
min.
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