JFW manufactures a variety of RF test systems. Integrating RF switches, step attenuators, and various RF components into remotely controlled RF sub systems.
Individually controlled step attenuators (i.e. 0-127dB x 1dB steps) that can be remotely controlled via TCP/IP, Serial or GPIB with simple ASCII formatted commands.
Handover Test Systems for Cellular Testing
Connect handsets to network access points and then vary the RF signal level to each handset. Built-in remote commands such as FADE and HANDOVER simply your mobile network testing.
Automate your RF signal routing with a matrix switch. Blocking matrix switch and Non-blocking matrix switch models are available with TCP/IP or serial remote control.
RF Switch Assemblies
Individually controlled RF switches (i.e. 1P2T, 1P4T, 1P8T, 1P16T) that can be remotely controlled via TCP/IP, Serial or GPIB with simple ASCII formatted commands.
Transceiver Test Systems for Radio Testing
Connect multiple radios together in a mesh network and fade the RF signal level between radios (i.e. 0-127dB x 1dB steps). Remotely controlled via TCP/IP connection.
Attenuator Assemblies (85)Our standard RF attenuator assemblies are available in either 19 inch rack mount or benchtop enclosures. Each attenuator can be controlled individually (set attenuator command) or as a group (block command, set block command). The manual control can be either keypad or manual lever control. The Ethernet/Serial models run our latest generation 3.x.x firmware that features easy to use ASCII formatted commands.
Handover Test Systems (58)Family of handover test systems designed for cellular handover testing. Internal step attenuators allow the RF signal between the network access points and the handsets to be dynamically faded up/down. The Ethernet/Serial models run our latest generation 3.x.x firmware that features easy to use ASCII formatted commands. Full Fan-out Handover Test Systems This type of fan-out provides connections for multiple handsets and multiple network access points. The RF signal between each handset and each access point can be faded up/down. The full fan-out handover test system is constructed with power divider/combiners on both halves of the matrix with a step attenuator on every path through the matrix. Every RF path through the matrix can have its own unique attenuation setting. 4X4 Full Fan-out Handover System: 16 step attenuator, 16 RF through paths 8X8 Full Fan-out Handover System: 64 step attenuators, 64 RF through paths Limited Fan-out Handover Test Systems A 4X1 limited fan-out has connections for a single handset and four network access points. The internal step attenuators can fade the RF signal from each access point to the handset. The limited fan-out handover test systems are constructed with a step attenuator on each input port with a power divider/combiner to combine all signals onto a common path. This design limits the number of step attenuators to be equal to the number of input ports. 4X1 Limited Fan-out Handover System: 4 step attenuator, 1 RF through path 8X1 Limited Fan-out Handover System: 8 step attenuators, 1 RF through path Manual Handover Test Systems Full fan-out or limited fan-out configurations but with manual step attenuators. These models require no AC power.
Matrix Switches (23)Our standard 50 Ohm and 75 Ohm RF matrix switches are available in rack mountable enclosures. The Ethernet/Serial models run our latest generation 3.x.x firmware that features easy to use ASCII formatted commands. Blocking Matrix Switches A blocking matrix switch is constructed with switches on both the input ports and the output ports. An input port can only be connected to a single output at one time. If you need to connect an input port to multiple outputs simultaneously, then you must use a non-blocking matrix. Non-blocking Matrix Switches A non-blocking matrix switch is constructed with power dividers on the input ports and switches on the output ports. The power dividers split the input signal up so that the input signal is available to all output ports simultaneously. An input port can be connected to all output ports simultaneously. Manual Keypad Features Our RF matrix switch models with keypads are remotely controlled via Ethernet/Serial. The IP settings can be viewed and updated from the keypad. The current Baud rated is also displayed.
RF Switch Assemblies (50)Our standard 50 Ohm and 75 Ohm RF switch assemblies are available with rack mount or benchtop enclosures. Each RF switch can be individually controlled with easy to use ASCII formatted remote commands. The Ethernet/Serial models run our latest generation 3.x.x firmware.
- 19 Inch Rack with 50 Ohm RF Switches
- 19 Inch Rack with 75 Ohm RF Switches
- Benchtop with 50 Ohm RF Switches
- Benchtop with 75 ohm RF Switches
Transceiver Testing (30)Family of RF test systems designed for transceiver testing. Multiple radios can be connected together in a closed mesh network. Step attenuators allow you to dynamically fade up/down the RF signal between radios. The difference between the three types is how each mesh network is created. Full Fan-out Transceiver Test Systems A full fan-out transceiver test system is constructed as a fully meshed matrix. There is a path between every pair of ports. Each path has its own individually controlled programmable attenuator. Each port can be connected to a device that can transmit/receive signals (i.e. radios, handsets). The programmable attenuators allow for a different dB setting for every path through the matrix. The attenuators can have their dB setting faded over a time interval to simulate signal fading between radios. The example diagram shown is a 12 port full fan-out configuration. This 12 port design will have a total of 66 programmable attenuators. Limited Fan-out Transceiver Test Systems For a limited fan-out transceiver, a port connects to only X number of its neighboring ports. The number of its neighboring ports can vary depending on the application. The example diagram shows a 12 port LC8 design. Each port is connected to only its 8 closest neighboring ports (4 upper neighboring ports & 4 lower neighboring ports). This design requires only 48 programmable attenuators. This limited fan-out design is most useful for reducing size/cost of designs with a large number of ports. For example, a full fan-out 48 port design would require 1128 programmable attenuators. A limited fan-out 48 port LC16 requires only 384 programmable attenuators. Cost and size reduction of approximately 66%. Hub Fan-out Transceiver Test Systems The hub fan-out transceiver test systems are constructed as a star matrix with a programmable attenuator on each port. The star configuration limits the number of paths in the matrix to be equal to the number of ports. The star design results in a lower cost due to the lower number of programmable attenuators. The example diagram shown is a 12 port hub fan-out configuration. All ports are connected via a resistive power divider/combiner with a star configuration. There are a total of 12 programmable attenuators. Functionality Vs. Cost For a transceiver test system, the major cost driver is the number of internal step attenuators. Each of the three types of transceiver test systems we offer require different numbers of internal step attenuators. This difference is due to the way the port-to-port connections are created. The full fan-out type has the highest number of internal step attenuators. The hub fan-out type has the lowest number of step attenuators.