JFW Industries, Inc. Mini Benchtop Programmable Attenuator Assembly 50BA-034-127

Model 50BA-034-127 is a benchtop attenuator assembly containing two 50 Ohm solid-state step attenuators. The attenuators have an attenuation range of 0 to 127dB by 1dB steps and operate from 30 MHz to 3 GHz. The attenuators can be controlled manually or remotely. The current attenuation settings are displayed on the front panel. It is available with SMA female 50 Ohm coaxial RF connectors. The RF connectors are located on the front panel. We label the RF connectors as Input and Output as a naming convention only. The attenuators operate bi-directionally. Manual Attenuator Control On the front panel are two manual lever switches. The levers can be used to adjust attenuation up/down for each attenuator. The levers are a momentary type switch so you can “tap to step” or “hold to jog”. The current attenuation setting of each attenuator is displayed directly above the corresponding lever switch. As you manually change the dB setting of an attenuator you will see its displayed dB value change simultaneously. You will also view any changes that a remotely connected user makes to the dB setting of any of the attenuators. Remote Attenuator Control This attenuator assembly can be remotely controlled via an Ethernet connection or a serial connection (i.e. RS-232). The network interface can be set in either DHCP mode or Fixed Address mode. We ship all new test systems from the factory in DHCP mode. A RS-232 connection to the test system is made using a null modem type serial cable. Baud rates up to 155200 Baud are available. Remote Command Set The firmware manual for our latest generation firmware is available for download. This manual lists all of our remote commands with command syntax and examples. Our firmware uses simple ASCII formatted remote commands. If you are connected to a JFW test system and send the HELP command, it will respond back with a list of all remote commands for that specific test system.