JFW model 75PD-188 F is a 11-way resistive divider/combiner that covers the frequency range DC-2150 MHz. It has 75 Ohm F female RF connectors. The unit has 12 total ports that are internally connected using a resistive star configuration. This design is ideal for testing 75 Ohm cable equipment that needs to communicate with each other over a 75 Ohm coax network. The star design is bidirectional allowing multiple 75 Ohm devices to communicate with each other with equal loss between all devices. Use JFW’s precision F male/male RF cable model 016-910-xx to connect the devices with minimum VSWR.
JFW will be in Israel week commencing Monday 15th January 2018.
Simon Watkins – VP International Sales will be visiting various customers in Israel during week 3.
JFW will be in Estonia & Sweden 12th to the 15th December.
Simon Watkins – VP International Sales will be visiting various customers in Estonia & Sweden during week 50.
JFW will be in Finland 28th November to the 1st December.
Simon Watkins – VP International Sales will be visiting various customers in Finland during week 48.
If you would prefer to control our USB attenuator or USB RF switch models using Python instead of our standard Windows based GUI test program, JFW does offer a Python library (jfwusb.py). Email our engineering department for the Python library and examples.
Python Library Features:
JFW model 50BA-032-31 SMA is a 4 channel attenuator assembly that covers 0.1-18 GHz. Each channel consists of a solid-state programmable attenuator with attenuation range 0 to 31dB in 1 dB steps. Each attenuator can be controlled individually or as a group. This benchtop attenuator assembly is remotely controlled via Ethernet/RS-232 and manually via momentary toggles on the front panel.
The current attenuation setting for each attenuator is displayed on the front panel. Whether the attenuators are changed by a remote user or manually, the attenuation displayed will be updated immediately. This is very useful when running remote scripts so that you can see that attenuator settings changing as the script executes.
The application note is an introduction to programmable attenuators and their applications. If you would like to discuss your application with our engineering staff please call (1-317-887-1340) or email.
Applications for Programmable Attenuator Systems
- Military radios
- First responder networks
- Cellular networks
- Mesh networks
- IoT and 5G systems
Key Programmable Attenuator Specifications
- Frequency range
- Attenuation range and step size
- RF input power
JFW Industries, Inc will be exhibiting at the European Microwave Week, Nuremberg, Germany 10th – 12th October 2017. Booth 115A.
Please come along and visit the booth to discuss our latest product news.
JFW is proud to announce the addition of a new line of 18 GHz step attenuators to our product line. These new 50 Ohm solid-state step attenuators cover 100 MHz to 18 GHz with an attenuation range of 0-31 dB by 1dB steps. The attenuators can handle up to +20 dBm of RF input power. We offer these attenuators as individual components or as an integrated RF test system.
TTL controlled step attenuator, 0.1-18 GHz, 0-30 x 1dB steps
USB controlled step attenuator, 0.1-18 GHz, 0-30 x 1dB steps
Ethernet attenuator assembly with (1) step attenuator, 0.1-18 GHz, 0-30 x 1dB steps
Ethernet attenuator assembly with (2) step attenuators, 0.1-18 GHz, 0-30 x 1dB steps
Ethernet attenuator assembly with (4) step attenuators, 0.1-18 GHz, 0-30 x 1dB steps
Why use a USB Attenuator?
In RF test labs, programmable attenuators and RF switches are a basic building block of performance testing. Programmable attenuators are used in fading, handover, and rate vs range testing. Among other things, RF switches are used in signal routing, component bypassing and switched filter banks. To fill this need, JFW offers an expansive selection of Programmable Attenuator Assemblies and RF Switch Assemblies in 19″ rack or benchtop enclosures. These boxes typically include Ethernet and RS-232 control. While appropriate for medium to large testing environments, a USB Attenuator or USB RF Switch is often a better solution for smaller test setups. Lower cost and smaller size of the USB device are especially relevant.