This application note discusses the four different construction types for RF matrix switches with pros and cons for each type. Matrix switch types discussed: blocking matrix switches, non-blocking matrix switches, super non-blocking matrix switches, and common highway matrix switches. The functionality of each construction type is discussed with example block diagrams. Please contact our engineering […]
The number one FAQ we receive from customers about our remotely controlled test systems is “How easy is it to connect and control the test system?”. So we setup an Ethernet test box that is accessible 24/7 for engineers around the world to try out. It is running our latest 3.x.x firmware. Connect to the […]
This application note discusses three different testing configurations that can be used to test military radios. The test configurations are: Hub Fan-out, Full Fan-out, and Limited Fan-out. Each configuration has its own testing features and limitations which are discussed. We do provide direct access to our engineering team if you have any questions or want […]
This application note discusses the challenges of choosing new RF test equipment for wireless testing. Depending on whether you are testing military radios or wireless cellular equipment, there are many different testing configuration options for selection. Picking the right size and configuration for your RF test system is critical. Feel free to email our engineering […]
Typical harmonic distortion test setup: Signal Generator, Low Pass Filter, DUT (device under test), Spectrum Analyzer. The low pass filter is used to filter out any high frequency distortion created by the signal generator. The low pass filter ensures that the fundamental test signal (Fc) is the only RF signal being input into the DUT. However, […]
JFW Model #50MS-367 2.9MM is a 4 X 4 blocking matrix switch that operates DC-40 GHz. The RF connectors are 50 Ohm impedance 2.9mm female type located on the rear panel. The unit is remotely controlled via Ethernet or RS-232. This RF matrix switch utilizes our 3.X.X firmware command set for remote control. All unused […]
The DOCSIS cable TV standard has created the need for equipment verification testing for frequencies up to 1002MHz, 1218MHz, and 1794MHz. JFW offers a number of products for signal routing, signal combining, or signal fading that cover the DOCSIS specified frequencies. JFW Model #75P-193 F is a 75 Ohm solid state programmable attenuator with F […]
Don’t use a fixed attenuator and an adapter, when you can get the fixed attenuator with mixed RF connectors. The majority of fixed attenuators that JFW manufactures can be specified to have mixed RF connectors. They don’t have to be just male/female either. You can specify female/female or male/male. What is the price difference between […]
Two 6GHz fixed attenuators models have been added to the JFW website. Model 50FHC-xxx-25-6 is rated at 25 Watts. Model 50FHXC-xxx-50-6 is rated at 50 Watts. Both models operate at DC-6GHz. The attenuation value can be selected from 1dB to 40dB in 1dB increments. The RF connectors available are 4.1/9.5, 4.3/10, 7/16, N, SMA or […]
The firmware for our Ethernet/RS-232 models (aka 3.x.x firmware) has been updated. It is a feature update only. All changes to 3.x.x firmware are noted on our Firmware Change Log. For this update, we added increment/decrement functionality into the remote commands: Set Attenuator (SA), Set All Attenuators (SAA), and Set Block (SB). Examples of the […]