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Handover Test Systems

Click on the categories below to view sortable tables with our online models. If you cannot find a model online that meets your requirements, then please email the request to our engineering department at jfwengr@jfwindustries.com.

Full Fan-out Handover Test Systems
The full fan-out handover test system is constructed with power divider/combiners on both halves of the matrix with a programmable attenuator on every path through the matrix. This allows for every path through the matrix to have its own unique attenuation setting.

 

 

Limited Fan-out Handover Test Systems
The limited fan-out handover test systems are constructed with a programmable attenuator on each input port with a power divider/combiner to combine all signals onto a common path. This design limits the number of programmable attenuators to be equal to the number of input ports which reduces cost when compared to the full fan-out design. Here are a couple examples that show the difference in attenuators needed for the two different design types.

 

 

Manual Handover Test Systems
A manual handover test system is usually in a benchtop enclosure. The attenuators are manually variable rotary attenuators. They can be configured as full fan-out or limited fan-out. These models require no AC power.

 

Size/Cost Vs. Functionality
For a handover test test system, the major cost driver is the number of programmable attenuators. Below are examples showing how the number of attenuators vary by design type. Reducing the number of programmable attenuators will reduce the size/cost of the test system, but you have to weigh the reduced size/cost against reduced functionality.

Design Type # of Attenuators Construction
6 x 6 full fan-out
36 programmable attenuators
Every path has an attenuator
6 x 6 limited fan-out
6 programmable attenuators
Every port has an attenuator
16 x 4 full fan-out
64 programmable attenuators
Every path has an attenuator
16 x 4 limited fan-out
16 programmable attenuators
Every port has an attenuator

3.x.x Firmware for PMA models
All transceiver test systems are controlled via Ethernet/RS-232 and ship with our latest 3.x.x firmware. Our firmware manual (firmware manual.pdf) lists all remote commands for the 3.x.x firmware. The 3.x.x firmware supports up to 12 simultaneous Ethernet connections and is DHCP capable. It features remote commands such as fade attenuator, variable attenuator handover, set block, fade block.