5696 slotNational Instruments PXIe-5696 Amplitude Extender. The National Instruments PXIe-5696 (part number: 783128-01) is an Amplitude Extender desned for use with the PXIe-5654 RF AnalogNational Instruments PXIe-5696 Amplitude Extender. The National Instruments PXIe-5696 (part number: 783128-01) is an Amplitude Extender desned for use with the PXIe-5654 RF Analog