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Martin Braun a74919c2a8 docs: Moved manual to Doxygen
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/*! \page page_dboards Daughterboard Application Notes
\tableofcontents
\section dboards 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.
\subsection dboards_basicrx Basic RX and LFRX
The Basic RX and LFRX boards have 4 frontends:
- **Frontend A:** real signal on antenna RXA
- **Frontend B:** real signal on antenna RXB
- **Frontend AB:** quadrature frontend using both antennas (IQ)
- **Frontend BA:** quadrature frontend using both antennas (QI)
The boards have no tunable elements or programmable gains. Through the
magic of aliasing, you can down-convert signals greater than the Nyquist
rate of the ADC.
BasicRX Bandwidth:
- **For Real-Mode (A or B frontend)**: 250 MHz
- **For Complex (AB or BA frontend)**: 500 MHz
LFRX Bandwidth:
- **For Real-Mode (A or B frontend)**: 33 MHz
- **For Complex (AB or BA frontend)**: 66 MHz
\subsection dboards_basictx Basic TX and LFTX
The Basic TX and LFTX boards have 4 frontends:
- **Frontend A:** real signal on antenna TXA
- **Frontend B:** real signal on antenna TXB
- **Frontend AB:** quadrature frontend using both antennas (IQ)
- **Frontend BA:** quadrature frontend using both antennas (QI)
The boards have no tunable elements or programmable gains. Through the
magic of aliasing, you can up-convert signals greater than the Nyquist
rate of the DAC.
BasicTX Bandwidth:
- **For Real-Mode (A or B frontend**): 250 MHz
- **For Complex (AB or BA frontend)**: 500 MHz
LFTX Bandwidth:
- **For Real-Mode (A or B frontend)**: 33 MHz
- **For Complex (AB or BA frontend)**: 66 MHz
\subsection dboards_dbsrx DBSRX
The DBSRX board has 1 quadrature frontend. It defaults to direct
conversion but can use a low IF through lo_offset in uhd::tune_request_t.
Receive Antennas: **J3**
- **Frontend 0:** Complex baseband signal from antenna J3
The board has no user selectable antenna setting.
Receive Gains:
- **GC1**, Range: 0-56dB
- **GC2**, Range: 0-24dB
Bandwidth: 8 MHz - 66 MHz
Sensors:
- **lo_locked**: boolean for LO lock state
\subsection dboards_dbsrx2 DBSRX2
The DBSRX2 board has 1 quadrature frontend. It defaults to direct
conversion, but can use a low IF through lo_offset in uhd::tune_request_t.
Receive Antennas: **J3**
- **Frontend 0:** Complex baseband signal from antenna J3
The board has no user-selectable antenna setting.
Receive Gains:
- **GC1**, Range: 0-73dB
- **BBG**, Range: 0-15dB
Bandwidth (Hz): 8 MHz -80 MHz
Sensors:
- **lo_locked**: boolean for LO lock state
\subsection dboards_rfx RFX Series
The RFX Series boards have 2 quadrature frontends: Transmit and Receive.
Transmit defaults to low IF, and Receive defaults to direct conversion.
The IF can be adjusted through lo_offset in uhd::tune_request_t.
The RFX Series boards have independent receive and transmit LO's and
synthesizers allowing full-duplex operation on different transmit and
receive frequencies.
Transmit Antennas: **TX/RX**
Receive Antennas: **TX/RX** or **RX2**
- **Frontend 0:** Complex baseband signal for selected antenna
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.
Receive Gains: **PGA0**, Range: 0-70dB (except RFX400 range is 0-45dB)
Bandwidth:
- **RX**: 40 MHz
- **TX**: 40 MHz
Sensors:
- **lo_locked**: boolean for LO lock state
\subsection dboards_xcvr XCVR 2450
The XCVR2450 has 2 quadrature frontends, one transmit, one receive.
Transmit and Receive default to direct conversion but can be used in low
IF mode through lo_offset in uhd::tune_request_t.
The XCVR2450 has a non-contiguous tuning range consisting of a high band
(4.9-6.0 GHz) and a low band (2.4-2.5 GHz).
Transmit Antennas: **J1** or **J2**
Receive Antennas: **J1** or **J2**
- **Frontend 0:** Complex baseband signal for selected antenna
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.
The XCVR2450 does not support full-duplex mode, attempting to operate in
full-duplex will result in transmit-only operation.
Transmit Gains:
- **VGA**, Range: 0-30dB
- **BB**, Range: 0-5dB
Receive Gains:
- **LNA**, Range: 0-30.5dB
- **VGA**, Range: 0-62dB
Bandwidths:
- **RX**: 15 MHz, 19 MHz, 28 MHz, 36 MHz; (each +-0, 5, or 10%)
- **TX**: 24 MHz, 36 MHz, 48 MHz
Sensors:
- **lo_locked**: boolean for LO lock state
- **rssi**: float for rssi in dBm
\subsection dboards_wbx WBX Series
Features:
- 2 quadrature frontends (1 transmit, 1 receive)
- Defaults to direct conversion
- Can be used in low IF mode through lo_offset with uhd::tune_request_t
- Independent recieve and transmit LO's and synthesizers
- Allows for full-duplex operation on different transmit and receive frequencies
- Can be set to use Integer-N tuning for better spur performance
with uhd::tune_request_t
Transmit Antennas: **TX/RX**
Receive Antennas: **TX/RX** or **RX2**
- **Frontend 0:** Complex baseband signal for selected antenna
- **Note:** The user may set the receive antenna to be TX/RX or RX2.
However, when using a 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
Receive Gains: **PGA0**, Range: 0-31.5dB
Bandwidths:
- **WBX**: 40 MHz, RX & TX
- **WBX-120**: 120 MHz, RX & TX
Sensors:
- **lo_locked**: boolean for LO lock state
\subsection dboards_sbx SBX Series
Features:
- 2 quadrature frontends (1 transmit, 1 receive)
- Defaults to direct conversion
- Can be used in low IF mode through lo_offset with uhd::tune_request_t
- Independent recieve and transmit LO's and synthesizers
- Allows for full-duplex operation on different transmit and
receive frequencies
- Can be set to use Integer-N tuning for better spur performance with uhd::tune_request_t
Transmit Antennas: **TX/RX**
Receive Antennas: **TX/RX** or **RX2**
- **Frontend 0:** Complex baseband signal for selected antenna
- **Note:** The user may set the receive antenna to be TX/RX or RX2.
However, when using an SBX board in full-duplex mode, the receive
antenna will always be set to RX2, regardless of the settings.
Transmit Gains: **PGA0**, Range: 0-31.5dB
Receive Gains: **PGA0**, Range: 0-31.5dB
Bandwidths:
- **SBX**: 40 MHz, RX & TX
- **SBX-120**: 120 MHz, RX & TX
Sensors:
- **lo_locked**: boolean for LO lock state
LEDs:
- All LEDs flash when daughterboard control is initialized
- **TX LD**: Transmit Synthesizer Lock Detect
- **TX/RX**: Receiver on TX/RX antenna port (No TX)
- **RX LD**: Receive Synthesizer Lock Detect
- **RX1/RX2**: Receiver on RX2 antenna port
\subsection dboards_cbx CBX Series
Features:
- 2 quadrature frontends (1 transmit, 1 receive)
- Defaults to direct conversion
- Can be used in low IF mode through lo_offset with uhd::tune_request_t
- Independent recieve and transmit LO's and synthesizers
- Allows for full-duplex operation on different transmit and
receive frequencies
- Can be set to use Integer-N tuning for better spur performance with uhd::tune_request_t
Transmit Antennas: **TX/RX**
Receive Antennas: **TX/RX** or **RX2**
- **Frontend 0:** Complex baseband signal for selected antenna
- **Note:** The user may set the receive antenna to be TX/RX or RX2.
However, when using a CBX board in full-duplex mode, the receive
antenna will always be set to RX2, regardless of the settings.
Transmit Gains: **PGA0**, Range: 0-31.5dB
Receive Gains: **PGA0**, Range: 0-31.5dB
Bandwidths:
- **CBX**: 40 MHz, RX & TX
- **CBX-120**: 120 MHz, RX & TX
Sensors:
- **lo_locked**: boolean for LO lock state
LEDs:
- All LEDs flash when daughterboard control is initialized
- **TX LD**: Transmit Synthesizer Lock Detect
- **TX/RX**: Receiver on TX/RX antenna port (No TX)
- **RX LD**: Receive Synthesizer Lock Detect
- **RX1/RX2**: Receiver on RX2 antenna port
\subsection dboards_tvrx TVRX
The TVRX board has 1 real-mode frontend. It is operated at a low IF.
Receive Antennas: RX
- **Frontend 0:** real-mode baseband signal from antenna RX
Receive Gains:
- **RF**, Range: -13.3-50.3dB (frequency-dependent)
- **IF**, Range: -1.5-32.5dB
Bandwidth: 6 MHz
\subsection dboards_tvrx2 TVRX2
The TVRX2 board has 2 real-mode frontends. It is operated at a low IF.
Receive Frontends:
- **Frontend RX1:** real-mode baseband from antenna J100
- **Frontend RX2:** real-mode baseband from antenna J140
Note: The TVRX2 has always-on AGC; the software controllable gain is the
final gain stage which controls the AGC set-point for output to ADC.
Receive Gains:
- **IF**, Range: 0.0-30.0dB
Bandwidth: 1.7 MHz, 6 MHz, 7 MHz, 8 MHz, 10 MHz
Sensors:
- **lo_locked**: boolean for LO lock state
- **rssi**: float for measured RSSI in dBm
- **temperature**: float for measured temperature in degC
\subsection dboards_dbsrxmod DBSRX - Modifying for other boards that USRP1
Due to different clocking capabilities, the DBSRX will require
modifications to operate on a non-USRP1 motherboard. On a USRP1
motherboard, a divided clock is provided from an FPGA pin because the
standard daughterboard clock lines cannot provided a divided clock.
However, on other USRP motherboards, the divided clock is provided over
the standard daughterboard clock lines.
\subsubsection dboards_dbsrxmod_1 Step 1: Move the clock configuration resistor
Remove **R193** (which is 10 Ohms, 0603 size), and put it on **R194**,
which is empty. This is made somewhat more complicated by the fact that
the silkscreen is not clear in that area. **R193** is on the back,
immediately below the large beige connector, **J2**. **R194** is just
below, and to the left of **R193**. The silkscreen for **R193** is ok,
but for **R194**, it is upside down, and partially cut off. If you lose
**R193**, you can use anything from 0 to 10 Ohms there.
\subsubsection dboards_dbsrxmod_1 Step 2: Burn a new daughterboard id into the EEPROM
With the daughterboard plugged-in, run the following commands:
cd <install-path>/lib/uhd/utils
./usrp_burn_db_eeprom --id=0x000d --unit=RX --args=<args> --slot=<slot>
- **\<args\>** are device address arguments (optional if only one USRP
device is on your machine)
- **\<slot\>** is the name of the daughterboard slot (optional if the
USRP device has only one slot)
\subsection dboards_rfxmod RFX - Modify to use motherboard oscillator
Older RFX boards require modifications to use the motherboard
oscillator. If this is the case, UHD software will print a warning about
the modification. Please follow the modification procedures below:
- Step 1: Disable the daughterboard clocks**
Move **R64** to **R84**. Move **R142** to **R153**.
- Step 2: Connect the motherboard blocks
Move **R35** to **R36**. Move **R117** to **R115**. These are all 0-Ohm,
so if you lose one, just short across the appropriate pads.
- Step 3: Burn the appropriate daughterboard ID into the EEPROM
With the daughterboard plugged in, run the following commands: :
cd <install-path>/lib/uhd/utils
./usrp_burn_db_eeprom --id=<rx_id> --unit=RX --args=<args> --slot=<slot>
./usrp_burn_db_eeprom --id=<tx_id> --unit=TX --args=<args> --slot=<slot>
- `<rx_id>` choose the appropriate RX ID for your daughterboard
- **RFX400:** 0x0024
- **RFX900:** 0x0025
- **RFX1800:** 0x0034
- **RFX1200:** 0x0026
- **RFX2400:** 0x0027
- `<tx_id>` choose the appropriate TX ID for your daughterboard
- **RFX400:** 0x0028
- **RFX900:** 0x0029
- **RFX1800:** 0x0035
- **RFX1200:** 0x002a
- **RFX2400:** 0x002b
- `<args>` are device address arguments (optional if only one USRP device is on your machine)
- `<slot>` is the name of the daughterboard slot (optional if the USRP device has only one slot)
*/
// vim:ft=doxygen:
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