這PXIe-5698(零件號:784096-01)是單槽的射頻前置放大器模塊從國家文書。該模塊旨在與NI-5668R矢量信號分析儀。它有助于增強(qiáng)接收器的低電平信號。這PXIe-5698也可以獨立運行前置放大器。的頻率范圍鎳PXIe-5698是10 MHz到26 GHz，而噪聲系數(shù)值的范圍在≤ 3.1 ~ ≤17.7之間。該模塊使用2.92毫米母連接器。連接器上的最大輸入電壓為10伏DC。電源接頭上的最大電壓為+28V DC。

這國家文書PXIe-5698射頻前置放大器模塊有三種工作模式:前置放大器模式、前置放大器旁路模式和使能校準(zhǔn)音模式。默認(rèn)情況下，的前置放大器模式PXIe-5698模塊已禁用。它可以在NI-RFSA驅(qū)動程序中啟用。前置放大器模式可以進(jìn)一步分為高頻帶或低頻帶模式。NI-RFSA選擇特定的操作模式(高頻段或低頻段)。這可以通過使用特定的中心頻率來實現(xiàn)。中心頻率的默認(rèn)設(shè)置是1 GHz。

這鎳 PXIe-5698配有機(jī)械繼電器，可提供額外的射頻信號旁路路徑。因此前置放大器無需重新連接系統(tǒng)即可移除。啟用的校準(zhǔn)音模式基本上是一種電源檢查。它確保系統(tǒng)布線正確。校準(zhǔn)音頻率固定在3.6 GHz。這PXIe-5698射頻前置放大器模塊還配有一個噪聲源，可以使能或禁用它來測量噪聲系數(shù)。默認(rèn)情況下，它是禁用的。

The PXIe-5698 (Part Number: 784096-01) is a single-slot RF Preamplifier Module from National Instruments. The module is designed to work with the NI-5668R Vector Signal Analyzer. It helps boost low-level signals to the receiver. The PXIe-5698 also functions as a stand-alone Preamplifier. The frequency range of the NI PXIe-5698 is 10 MHz to 26 GHz, while the noise figure value ranges between ≤ 3.1 ~ ≤17.7. This module uses 2.92 mm female connectors. The maximum input voltage on the connectors is ±10 V DC. The maximum voltage on the source connectors is +28V DC.

The National Instruments PXIe-5698 RF Preamplifier Module has three modes of Operation: the preamplifier mode, the preamplifier bypass mode, and the enable calibration tone mode. By default, the preamplifier mode of the PXIe-5698 module is disabled. It can be enabled in the NI-RFSA driver. The preamplifier mode can further be classified into the high band or low band modes. A specified mode of operation (high band or low band) is selected by NI-RFSA. This can be accomplished by using a specified center frequency. The default setting of the center frequency is 1 GHz.

The NI PXIe-5698 is equipped with a mechanical relay, which provides an additional RF signal bypass path. Thus, the Preamplifier can be removed without reconnecting the system. The enabled calibration tone mode is basically a power check. It ensures the system is cabled properly. The calibration tone frequency is fixed at 3.6 GHz. The PXIe-5698 RF Preamplifier Module is also equipped with a noise source, which can be enabled or disabled for noise figure measurement. By default, it is disabled.