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.
JFW Industries, Inc will be in Asia! Simon Watkins, VP International Sales, will be visiting various customers in Taiwan & South Korea during September 2017.
Now available from JFW: USB Programmable Attenuators with 0.25 dB & 0.5 dB step size up to 3 GHz. The majority of programmable attenuators available have 1 dB steps. However, for some applications, such as satellite communication testing, smaller step sizes can be beneficial. For those cases, these three models can provide that capability.
- 50P-2058 has 0.25 dB steps up to 31.75 dB.
- 50P-2042 has 0.5 dB steps to 63.5 dB.
- 50P-2055 goes all the way to 95.5 dB in 0.5 dB steps.
All three attenuators are controlled and powered through a Mini-B USB connector. A USB hub can be used to simultaneously control multiple attenuators. Included with each step attenuator is our Windows-based GUI software for easy attenuation control of a single or multiple attenuators.
JFW is excited to announce a new dual rotary attenuator, 50DR-141, that covers LTE Band 42. It functions from DC up to 3600 MHz. This attenuator handles up to 2 Watts of RF power. The maximum attenuation is 40 dB in 1 dB increments. The 50DR-141 has mounting holes in the front plate for easy mounting on panels for instrumentation applications. RF connector options include SMA or N.