Entries by JFW Eng Dept

How To Right-Size Your Wireless Testing

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 […]

A Fixed Attenuator can Improve your Harmonic Distortion Test Setup

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, […]

75 Ohm Programmable Attenuator for CATV DOCSIS Equipment Testing

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 […]

Mix and Match RF Connectors for Fixed Attenuators

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 […]

3.x.x Firmware Feature Update (3.3.18)

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 […]

3D Models Available

Our Drafting Department has created a library of 3D models for almost every JFW model listed on our website.   If you would like a 3D model, please email our Drafting Department the 3D model format you prefer (STEP, IGES) and the JFW model number.