這些選件可為電子負載提供包含多種配置的機架安裝套件。 選件 800 可以并排安裝兩個主機。 選件 908 和 909 僅適用于在機架上安裝的單臺儀器。 套件包括 1 個上架鑲條、1 個把手和 4 個與該儀器連接的螺釘，還有 4 個機架螺釘和若干個螺母。

當您下達原始訂單時可以同時訂購選件 909、908 或 808。如果您已經擁有電源，您可以根據下表訂購。

注：
選件要求使用滑軌套件（1494-0059）或支持軌道（E3663AC），以支撐負載主機的重量。

The Keysight N3304A-J01 is a special order option that increases the input voltage from 60 V to 80 V. The N3304A-J01 is added to the standard N3304A DC electronic load module. You must also order the standard product, N3304A.

The N3304A is a 300 W electronic load module for use in either the N3300A or N3301A electronic load mainframe in system applications. The N3304A load module is fast and accurate, for programming in constant current, constant voltage, or constant resistance modes, or for making voltage, current or power measurements. The N3304A can also digitize waveforms.

Testing multiple output dc power supplies and DC-DC converters can be very time consuming if each output must be tested sequentially. If measurements are being made through a MUX using one DMM, this is what will happen. Using the built-in measurement capabilities of the N3300A electronic loads, all outputs can be measured simultaneously. Alternatively, multiple single output power sources can be tested simultaneously.

A single GPIB address is all you need for complete control and read-back of the N3304A load module within a single N3300A or N3301A mainframe. The N3304A electronic load provides fast operation and the accurate programming and read-back needed for high-volume DC power supply test systems.