RFI RX0696-3008-31 User manual

RX0696-3008-31
EXPANSION SHELF
INTRODUCTION
The RFI Receiver Multicoupler Expansion Shelf is a wideband low loss 8 way splitter
with high isolation between outputs and is available as an optional accessory for the
range of RFI Receiver Multicouplers to expand system channel capacity. The
Expansion Shelf is designed for broadband operation and is suitable for use with any
model in the RFI Receiver Multicoupler range.
INSTALLATION
Mounting
The Expansion Shelf is to be mounted indoors only. It is designed to fit in a 1U rack
space and should be mounted clear of any equipment that generates excess heat.
Earthing
Connect an earthing strap from the chassis to an appropriate earth point to protect
the Expansion Shelf from being exposed to high transient voltages.
RF Input
The specified maximum signal level into this input should be observed to avoid
damaging the input circuitry.
RF Outputs 1 to 8
Eight equal level N connector RF outputs are available. Best performance will be
achieved if 50 ohm terminations are fitted to any unused RF outputs however, as the
outputs are well isolated from each other, the performance degradation is minimal if
the unused RF outputs are left unterminated.
Cabling
Please ensure that all cables to the Expansion Shelf are properly grounded to avoid
lightning transients travelling to the unit. If the Expansion Shelf is located some
distance from the Receiver Multicoupler longer cables will be required. Only use high
quality, well screened coaxial cables between units.
Connection to the Receiver Multicoupler
Connect the supplied N male to N male cable from the Receiver Multicoupler
Expansion Port or RF Output (as determined by configuration) to the RF Input on the
Expansion Shelf.
Specifications - Typical at 25⁰C
Frequency range 60- 960 MHz
Insertion Loss: RF outputs 1-8 10.5 ± 0.5 dB
Insertion Loss variation with temp. ±0.2 dB
Impedance 50 ohm
Input return loss >14 dB
Output return loss >14 dB
Isolation between outputs >20 dB
Maximum Input Level 24 dBm
RF Connectors N female
Operating temperature range -30 to +60 ⁰C
Earthing M6 earthing stud
Mechanical Dimensions To fit a 1U high rack space
44x482x120mm, including
connectors
Weight 1.2 kg
Help
For help on using this product contact your nearest RFI Sales Office.
© RFIndustries Pty. Ltd. 2009 U9I02AB

Using Multiple Expansion Multicouplers
In systems where more than 16 outputs are required multiple Expansion Shelves
can be used with one Receiver Multicoupler. Using multiple units, up to 128 equal
level outputs can be provided.
Receiver Multicoupler - Expansion Shelf
Configurations
Up to 16 Outputs
Example: 14 RF Outputs each with a gain of 0 to +15dB
Up to 64 Outputs
Example: 22 RF Outputs each with a gain of 0 to +5dB
RF INPUT
RF Input
RF OUTPUTS
Expansion Shelf
RF OUTPUTS
RF INPUT
EXP PORT
Receiver Multicoupler
RF OUTPUTS RF INPUT
EXP PORT
RF Input
Receiver Multicoupler
RF OUTPUTS
RF INPUT
50 ohm
termination
RF OUTPUTS
RF INPUT
RF OUTPUTS
RF INPUT
Expansion Shelf
Up to 128 Outputs
Example: 128 Outputs each with a gain of 0 to +5dB
RF OUTPUTS RF INPUT
EXP PORT
RF Input
Receiver Multicoupler
RF OUTPUTS
RF INPUT
Expansion Shelf
RF OUTPUTS
RF INPUT
RF OUTPUTS
RF INPUT
16 Expansion Shelves