Table Of Contents

USRP-2920 Front Panel and LEDs

Version:
    Last Modified: June 27, 2017

    Table 1. Connector Descriptions
    Connector Description

    RX 1

    TX 1

    Input and output terminal for the RF signal. RX 1 TX 1 is an SMA (f) connector with an impedance of 50 Ω and is a single-ended input or output channel.
    RX 2 Input terminal for the RF signal. RX 2 is an SMA (f) connector with an impedance of 50 Ω and is a single-ended input channel.
    REF IN Input terminal for an external reference signal for the local oscillator (LO) on the device. REF IN is an SMA (f) connector with an impedance of 50 Ω and is a single-ended reference input. REF IN accepts a 10 MHz signal with a minimum input power of 0 dBm (.632 Vpk-pk) and a maximum input power of 15 dBm (3.56 Vpk-pk) for a square wave or sine wave.
    PPS IN Input terminal for the pulse per second (PPS) timing reference. PPS IN is an SMA (f) connector with an impedance of 50 Ω and is a single-ended input. PPS IN accepts 0 V to 3.3 V TTL and 0 V to 5 V TTL signals.
    MIMO EXPANSION The MIMO EXPANSION interface port connects two USRP devices using a compatible MIMO cable.
    GB ETHERNET The gigabit Ethernet port accepts an RJ-45 connector and gigabit Ethernet compatible cable (Category 5, Category 5e, or Category 6).
    POWER The power input accepts a 6 V, 3 A external DC power connector.
    Table 2. LED Indicators
    LED Description Color Indication
    A Indicates the transmit status of the device. Off The device is not transmitting data.
    Green The device is transmitting data.
    B Indicates the status of the physical MIMO cable link. Off The devices are not connected using the MIMO cable.
    Green The devices are connected using the MIMO cable.
    C Indicates the receive status of the device. Off The device is not receiving data.
    Green The device is receiving data.
    D Indicates the firmware status of the device. Off The firmware is not loaded.
    Green The firmware is loaded.
    E Indicates the reference lock status of the LO on the device. Off There is no reference signal, or the LO is not locked to a reference signal.
    Blinking The LO is not locked to a reference signal.
    Green The LO is locked to a reference signal.
    F Indicates the powers status of the device. Off The device is powered off.
    Green The device is powered on.

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