N200/N210 Device Recovery

Overview

This application note will cover the details of recovering your N200/N210.

Manual

The User Manual page for the N200/N210 is at the link below. http://files.ettus.com/manual/page_usrp2.html

LEDs

The LEDs on the front panel can be useful in debugging hardware and software issues. The LEDs reveal the following about the state of the device:

• LED A: transmitting
• LED B: MIMO cable link
• LED C: receiving
• LED D: firmware loaded
• LED E: reference lock
• LED F: CPLD loaded

Safe Mode

You can try booting your N210 into Safe Mode. More information about Safe Mode can be found at the link below. http://files.ettus.com/manual/page_usrp2.html#usrp2_loadflash_brick

Troubleshooting

Listed below are some specific things that you can check to verify whether or not your N200/N210 hardware is working correctly. If the answer to any of the questions listed below is "no", then there is probably a hardware problem.

• Does the fan spin?

• Do any of the LEDs on the front panel light up? Which ones? (http://files.ettus.com/manual/page_usrp2.html#usrp2_hw_leds)

• Are the lights on the Ethernet port flashing, when the N210 is connected to the host computer? Note that the N200/N210 must be connected to a 1 Gigabit Ethernet port. A 100 Mbps Ethernet port will not work.

• Check the voltages on these connectors on the motherboard: J105 (should be 2.5V); J104 (should be 3.3V); J107 (should be 1.2V). Do you see the correct voltages on those connectors?

• Does the LED at D203 on the motherboard light up? If you're holding the N210 such that the front panel is facing you, then D203 is located near the left connector for the daughterboard.