Access LED

The Access LED indicates the basic hardware status of the PXIe-5820.

Table 11. Access LED Indicator Status
Status Indicator Device State
Off The device is not yet functional or has detected a problem with a PXI Express power rail.
Amber The device is being accessed. Accessed means that you are writing to the device setup registers to control the device, reading from the device to monitor the device status, or transferring data to/from the device.
Green The device is controllable through the software.

Why Is the Access LED Off When the Chassis Is On?

The LEDs may not light until the module has been configured in MAX. Before proceeding, verify that the module appears in MAX.

If the module appears in MAX but the Access LED fails to light after you power on the chassis, a problem may exist with the chassis power rails, the hardware module, or the LED.

Note Apply external signals only while the hardware is powered on. Applying external signals while the hardware is powered off may cause damage.
  1. Disconnect any signals from the PXI Express module front panel.
  2. Power off the PXI Express chassis.
  3. Remove the module from the PXI Express chassis and inspect it for damage.
    Notice Do not reinstall a damaged device.
  4. Install the module in a different PXI Express chassis slot from which you removed it.
  5. Power on the PXI Express chassis.
  6. Restart your computer.
  7. Verify that the module appears in MAX.

Active LED

The Active LED indicates the module output channel state.

Table 12. Active LED Indicator Status
Status Indicator Device State
Off The device is idle.
Solid green The device is generating a waveform.
Dim amber The device is waiting for an acquisition Reference Trigger.
Solid amber The device is acquiring a waveform.
Solid red The device has detected an error. The LED remains red until the error condition is removed.
Note The indicators are listed in increasing order of priority. For example, if you are generating a waveform using NI-RFSG and waiting on an acquisition Reference Trigger in NI-RFSA, the LED is dim amber.