Table 32. NI USRP-2953R Module LEDs
LED Indication
RF 0 TX1/
RX1
Indicates the transmit status of the module:
OFF—The module is not active.
RED—The module is receiving data.
GREEN—The module is transmitting data.
RX2 Indicates the receive status of the module:
OFF—The module is not receiving.
GREEN—The modules is receiving.
REF Indicates the status of the reference signal:
OFF—There is no reference signal or the device is not locked to the
reference signal.
BLINKING—The device is not locked to the reference signal.
GREEN—The device is locked to the reference signal.
PPS Indicates the pulse per second (PPS):
OFF—There is no reference signal or the device is not locked to the
reference signal.
BLINKING—The device is not locked to the reference signal.
GREEN—The device is locked to the reference time signal.
GPS Indicates whether the GPSDO is locked:
OFF—There is no GPSDO or the GPSDO is not locked.
GREEN—The GPSDO is locked.
LINK Indicates the status of the link to a host computer:
OFF—There is no link to a host computer.
GREEN/YELLOW/RED—The host is actively communicating with
the device.
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