Description
Model 75PA-131 is a 19 inch rack mount attenuator assembly containing 32 relay step attenuators with 75 Ohm impedance. The attenuators have attenuation range 0 to 95.5 by 0.5dB steps and operate DC-1218MHz. The attenuators are bi-directional. The attenuators can be controlled manually or remotely. It is available with F female 75 Ohm coaxial RF connectors. The RF connectors are located on the rear panel.
Manual Attenuator Control
The manual control menu allows you to set each attenuator address to an attenuation setting. If you scroll through the attenuator address numbers, the current dB settings will be shown.
Remote Attenuator Control
This attenuator assembly can be remotely controlled via an Ethernet connection or a serial connection (i.e. RS-232). The network settings can be changed manually with the keypad or remotely using the NET remote command. The network interface can be set to either DHCP mode or Fixed Address 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. The baud rate can be changed manually with the keypad or remotely with the SERIAL remote command.
