Table 1. Signal Descriptions
Pin |
Signal |
Description |
GPS Antenna Connector |
GPS ANT |
This connector provides 5 VDC for an active antenna. This connector also serves as the input for the RF signal coming in from the GPS antenna. |
CLKOUT Connector |
CLKOUT |
Clock output. This connector is used to source a 10 MHz clock that can be routed programmatically from the temperature-compensated crystal oscillator (TCXO) or backplane clock (PXI_CLK10). |
CLKIN Connector |
CLKIN |
Clock input. This connector supplies the module with a clock that can be programmatically routed to the PXI backplane (PXI_CLK10_IN) for distribution to the other 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.
|
PFI0/IRIG-B Input Connector |
PFI0/IRIG-B IN |
Input for channel 0 of the Programmable Function Interface. This connector can be used for either input or output. You can program the behavior of this PFI connection individually. PFI0 can function as an input for IRIG-B DC or AM.
Note
Do not connect an AM signal to PFI0 when the PFI line is configured for digital operations. This could cause damage to the digital circuitry, the device driving the AM signal, or both. Always ensure the line is configured for IRIG-B AM operation before connecting an IRIG-B AM signal.
|
PFI<1..2> Connectors |
PFI<1..2> |
Input for channels 1 and 2 of the Programmable function interface. These connectors can be used for either input or output. You can program the behavior of these PFI connections individually. |
RJ-45 Ethernet Connector |
RJ-45 Ethernet |
10/100/1000 Mbit Ethernet connection. This connector allows the module to communicate via standard Ethernet cabling. |
Table 2. GPS LED
The GPS LED indicates the status of the GPS hardware.
Color |
Status |
Off |
Not using GPS* |
Amber |
Attempting to start self survey |
Blinking Amber |
Self survey in progress |
Blinking Green |
Self survey complete (normal operation) |
Red |
Error† |
*The GPS LED is turned off if GPS is not set as the time reference.
†An error is generated when the antenna is disconnected, when there is an antenna malfunction, or when there is a hardware malfunction.
Table 3. 1588 LED
The 1588 LED indicates the status of the IEEE 1588 synchronization protocol.
Color |
Status |
Off |
Not using 1588* |
Amber |
Initializing |
Blinking Amber (2 seconds) |
Listening or Passive |
Green |
Uncalibrated or Slave |
Blinking Green (2 seconds) |
Master or Premaster |
Red |
Faulty |
*1588 has been disabled or stopped.
Table 4. Ethernet Speed LED
The Ethernet Speed LED indicates the PXI-6683 Series Ethernet link speed.
Color |
Status |
Off |
10 Mbps |
Green |
100 Mbps |
Amber |
1000 Mbps |
Table 5. Ethernet ACT/LINK LED
The Ethernet ACT/LINK LED indicates the PXI-6683 Series Ethernet link condition.
Color |
Status |
Off |
No Ethernet link |
Green |
Ethernet link established |
Blink |
Ethernet activity occurring |