National Instruments PXI-6683 Series User Manual

Also see for PXI-6683 Series: Installation guide User manual

Contents

The Ethernet ACT/LINK LED indicates the PXI-6683 Series Ethernet link condition.Table 5. Ethernet ACT/LINK LEDColor StatusOff No Ethernet linkGreen Ethernet link establishedBlink Ethernet activity occurringConnectorsThis section describes the connectors on the front panel of the PXI-6683 Series. Refer toFigure 3. on page 9 for the location of the connectors.• GPS ANT—GPS antenna RF input and DC power output for the active GPS antenna.This connector provides 5 VDC for an active antenna. This connector also serves as theinput for the RF signal coming in from the GPS antenna.• CLKOUT—Clock Output. This connector is used to source a 10 MHz clock that can berouted programmatically from the temperature-compensated crystal oscillator (TCXO) orbackplane clock (PXI_CLK10).• CLKIN—Clock Input. This connector supplies the module with a clock that can beprogrammatically routed to the PXI backplane (PXI_CLK10_IN) for distribution to theother modules in the chassis when the PXI-6683 is installed in the system timing slot.Note The PXI-6683H does not have the CLKIN connector.• PFI<0..2>—Programmable Function Interface <0..2>. These connectors can be used foreither input or output. You can program the behavior of these PFI connectionsindividually. Additionally, PFI0 can function as an input for IRIG-B DC or AM.Caution Do not connect an AM signal to PFI0 when the PFI line isconfigured for digital operations. This could cause damage to the digitalcircuitry, the device driving the AM signal, or both. Always ensure the line isconfigured for IRIG-B AM operation before connecting an IRIG-B AM signal.• RJ-45 Ethernet—10/100/1000 Mbit Ethernet connection. This connector allows themodule to communicate via standard Ethernet cabling.Caution Connections that exceed any of the maximum ratings of input oroutput signals on the PXI-6683 Series can damage the module, the computer, orother devices connected to the PXI-6683 Series. National Instruments is notliable for any damage resulting from such signal connections.Hardware FeaturesThe PXI-6683 Series performs the following functions:• Synchronization using GPS, IRIG-B, PPS, IEEE 1588, or IEEE 802.1AS.• Generation of future time events and clock signals, based on the synchronized time.• Timestamping incoming signals with the synchronized time.PXI-6683(H) User Manual | © National Instruments | 11