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========================================================================
UHD - Daughterboard Application Notes
========================================================================
.. contents:: Table of Contents
------------------------------------------------------------------------
Daughterboard Properties
------------------------------------------------------------------------
The following contains interesting notes about each daughterboard.
Eventually, this page will be expanded to list out the full
properties of each board as well.
^^^^^^^^^^^^^^^^^^^^^^^^^^^
Basic RX and and LFRX
^^^^^^^^^^^^^^^^^^^^^^^^^^^
The Basic RX and LFRX boards have 3 subdevices:
* **Subdevice A:** real signal on antenna RXA
* **Subdevice B:** real signal on antenna RXB
* **Subdevice AB:** quadrature subdevice using both antennas
The boards have no tunable elements or programmable gains.
Though the magic of aliasing, you can down-convert signals
greater than the Nyquist rate of the ADC.
^^^^^^^^^^^^^^^^^^^^^^^^^^^
Basic TX and and LFTX
^^^^^^^^^^^^^^^^^^^^^^^^^^^
The Basic TX and LFTX boards have 1 quadrature subdevice using both antennas.
The boards have no tunable elements or programmable gains.
Though the magic of aliasing, you can up-convert signals
greater than the nyquist rate of the DAC.
^^^^^^^^^^^^^^^^^^^^^^^^^^^
RFX Series
^^^^^^^^^^^^^^^^^^^^^^^^^^^
Transmit Antennas: **TX/RX**
Receive Antennas: **TX/RX** or **RX2**
The user may set the receive antenna to be TX/RX or RX2.
However, when using an RFX board in full-duplex mode,
the receive antenna will always be set to RX2, regardless of the settings.
Recieve Gains: **PGA0**, Range: 0-70dB (except RFX400 range is 0-45dB)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
XCVR 2450
^^^^^^^^^^^^^^^^^^^^^^^^^^^
The XCVR2450 has a non-contiguous tuning range consisting of a high band and a low band.
The high band consists of frequencies between...TODO
Transmit Antennas: **J1** or **J2**
Receive Antennas: **J1** or **J2**
When using the XCVR2450 in full-duplex mode,
the user must set the receive antenna and the transmit antenna to be different;
not doing so will yeild undefined results.
The XCVR2450 uses a common LO for both receive and transmit.
Even though the API allows the RX and TX LOs to be individually set,
a change of one LO setting will be reflected in the other LO setting.
Transmit Gains:
* **VGA**, Range: 0-30dB
* **BB**, Range: 0-5dB
Receive Gains:
* **LNA**, Range: 0-30.5dB
* **VGA**, Range: 0-62dB
^^^^^^^^^^^^^^^^^^^^^^^^^^^
WBX Series
^^^^^^^^^^^^^^^^^^^^^^^^^^^
Transmit Antennas: **TX/RX**
Receive Antennas: **TX/RX** or **RX2**
The user may set the receive antenna to be TX/RX or RX2.
However, when using an WBX board in full-duplex mode,
the receive antenna will always be set to RX2, regardless of the settings.
Transmit Gains: **PGA0**, Range: 0-25dB
Recieve Gains: **PGA0**, Range: 0-31.5dB
|
