這PXI國(guó)家儀器公司-5695(零件號(hào):781036-01)是一款70 dB、8 GHz、雙通道、可編程的PXI射頻衰減器具有一個(gè)可編程衰減路徑和一個(gè)固定衰減路徑。在組合路徑配置下運(yùn)行時(shí)倪PXI-5695級(jí)聯(lián)時(shí)，在2.5 GHz下可提供高達(dá)70 dB的凈衰減。利用該模塊，用戶可以提高RF信號(hào)發(fā)生器的功率精度，尤其是在較低功率范圍內(nèi)。這個(gè)外在的衰減器向用戶提供所需輸出功率水平的信號(hào)衰減。在典型工作條件下，的通道1 (CH 1)PXI-5695提供+0.5 dB衰減分辨率、0.7 dB電平校準(zhǔn)精度、+4 μs衰減建立時(shí)間、+27 dBm (5 Vrms、7 Vpk最大輸入功率(工作)和+26 dBm最大反向功率。

每一個(gè)PXI-5695通道輸入/輸出連接器為SMA母連接器，設(shè)計(jì)用于在50ω阻抗下工作。這個(gè)263克PXI射頻衰減器是一個(gè)單槽3U PXI模塊，尺寸為21.6厘米× 2.0厘米× 13.0厘米。這PXI國(guó)家儀器公司-5695允許用戶對(duì)通道1 (CH 1)的增益值進(jìn)行編程，而通道0 (CH 0)的增益以固定增益工作。該模塊在+3.3 Vdc下工作時(shí)，最大功耗為2.2瓦。

這倪PXI-5695設(shè)計(jì)工作頻率范圍為50 MHz至8.0 GHz。模塊的前面板上有通道0和通道1的輸入和輸出連接器。

The National Instruments PXI-5695 (Part Number: 781036-01) is a 70 dB, 8 GHz, 2-Channel, Programmable PXI RF Attenuator with one programmable attenuation path and one fixed attenuation path. While operating in combined path configuration, the NI PXI-5695 can provide up to 70 dB of net attenuation at 2.5 GHz when cascaded. With this module, the user can improve their RF signal generator`s power accuracy, especially in lower power ranges. This external Attenuator gives the user the attenuation of the signal to the required output power level. In typical operating conditions, the channel 1 (CH 1) of the PXI-5695 offers +0.5 dB attenuation resolution, ±0.7 dB level calibration accuracy, +4 μs attenuation settling time, +27 dBm (5 Vrms, 7 Vpk maximum input power (operation), and +26 dBm maximum reverse power.

Each of the PXI-5695 channel input/output connectors are SMA female and designed to operate at 50 Ω impedance. This 263 g PXI RF Attenuator is a One Slot, 3U, PXI module, with dimensions of 21.6 cm × 2.0 cm × 13.0 cm. The National Instruments PXI-5695 allows the user to program the gain value on channel 1 (CH 1), while the gain on channel 0 (CH 0) operates at a fixed gain. This module consumes 2.2 watts of maximum power while operating at +3.3 Vdc.

The NI PXI-5695 is designed to operate within a frequency range of 50 MHz to 8.0 GHz. The front panel on the module features input and output connectors for both Channel 0 & Channel 1.