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resources:eval:user-guides:circuits-from-the-lab:cn0178 [30 Jul 2021 07:12] Victor Calinao, Jr
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 +====== CN0178 Evaluation Board Guide ======
 +===== Overview =====
 +[[ADI>CN0178]] is a circuit that measures the rms signal strength of RF signals with varying crest factors (peak-to-average ratio) over a dynamic range of approximately 65 dB and operates at frequencies from 50 MHz up to 9 GHz using the [[ADI>ADL5902]] TruPwr™ detector. The measurement result is provided as serial data at the output of a 12-bit ADC. A simple 4-point system calibration at ambient temperature is performed in the digital domain.
 +
 +The [[ADI>ADL5902]] provides a solution in a variety of high frequency systems requiring an accurate measurement of signal power. It can operate from 50 MHz to 9 GHz and can accept inputs from −62 dBm to at least +3 dBm with large crest factors, such as GSM, CDMA, W-CDMA, TD-SCDMA, WiMAX, and LTE modulated signals.
 +
 +The [[ADI>AD7466]] 12-bit, high speed, low power, successive approximation analog-to-digital converters (ADC). It operates from a single 1.6 V to 3.6 V power supply and feature throughput rates up to 200 kSPS with low power dissipation. The parts contain a low noise, wide bandwidth track-and-hold amplifier, which can handle input frequencies in excess of 3 MHz. 
 +
 +The EVAL-CN0178-SDPZ board connects to ADI’s System Demonstration Platform (SDP) and is powered by a +6 V supply or +6 V “wall wart”.
 +{{ :resources:eval:user-guides:circuits-from-the-lab:cn0178:cn0178-hw-1024.jpg?nolink&600 |}}
 +\\
 +----
 +===== Required Equipment =====
 +  * [[adi>EVAL-CN0178-SDPZ|EVAL-CN0178-SDPZ Evaluation Board]]
 +  * [[adi>EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] Controller Board (**SDP-B Board**)
 +  * [[ftp://ftp.analog.com/pub/cftl/CN0178/|CN0178 Evaluation Software]]
 +  * 6 V or 6 V Wall wart
 +      * //Agilent E3631A power supply//
 +  * PC with the following //Minimum Requirements//
 +      * Windows 7 (32-bit), Windows Vista (32-bit) or Windows XP
 +      * USB interface
 +  * RF signal source 
 +      * //Rohde & Schwarz SMT-03 RF signal source//
 +  * Coaxial RF cable with SMA connectors
 +
 +----
 +===== General Setup =====
 +==== Block assignments ====
 +{{ :resources:eval:user-guides:circuits-from-the-lab:cn0178:10-25-2017_2-16-34_pm.png?nolink&650 |}}\\
 +  * The [[adi>EVAL-CN0178-SDPZ|EVAL-CN0178-SDPZ]] **(CN-0178 Board)** connects to the [[adi>EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] **(SDP-B Board)** via the 120-Pin connector
 +  * The [[adi>EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] **(SDP-B Board)** connects to the PC via the USB cable.
 +  * Terminal block **J1** is the +6 V power supply
 +  * Terminal block **J2** is the +6 V barrel connector for wall wart supply input
 +  * Terminal block **J3** is the SMA connector for RF input
 +
 +\\
 +==== Test setup ====
 +{{ :resources:eval:user-guides:circuits-from-the-lab:cn0178:10-30-2017_3-33-48_pm.png?nolink&600 |}}\\
 +  - Connect the 120-pin connector on the [[adi>EVAL-CN0178-SDPZ|EVAL-CN0178-SDPZ Evaluation Board]] to the connector marked “CON A” on the [[adi>EVAL-SDP-CB1Z|EVAL-SDP-CB1Z]] evaluation (SDP) board
 +  - Connect the RF signal source to the [[adi>EVAL-CN0178-SDPZ|EVAL-CN0178-SDPZ Evaluation Board]] via the SMA RF input connector
 +  - With power to the supply off, connect a +6 V power supply to the pins marked “+6V” and “GND” on the board
 +      *//If available, a +6 V "wall wart" can be connected to the barrel connector on the board and used in place of the +6 V power supply//
 +  - Connect the USB cable supplied with the SDP board to the USB port on the PC
 +  - Apply power to the +6 V supply (or “wall wart”) connected to [[adi>EVAL-CN0178-SDPZ|EVAL-CN0178-SDPZ Evaluation Board]]
 +  - Launch the evaluation software
 +  - Connect the USB cable from the PC to the USB mini connector on the SDP board
 +\\
 +<WRAP center round important 60%>
 + Do **not** connect the USB cable to the Mini-USB connector on the SDP board before turning on the dc power supply for the **EVAL-CN0178-SDPZ**.
 +</WRAP>
 +\\
 +
 +==== Calibration ====
 +Because the slope and intercept of the system vary from device to device, a system level calibration is **required**. For this board, a 4-point calibration is used to correct for some non-linearity in the RF detector's transfer function particularly at the low end.
 +  - Apply four known signal levels to ADL5902. Note that it should be well within the linear operating range of the device {{ :resources:eval:user-guides:circuits-from-the-lab:cn0178:8.png?400 |}}\\
 +  - Measure the corresponding output codes from the ADC
 +  - Calculate SLOPE_ADC and INTERCEPT calibration coefficients using the following equations:
 +          * **SLOPE_1** = (CODE_1 - CODE_2)/(PIN_1 - PIN_2)
 +          * **INTERCEPT1** = CODE_1/(SLOPE_ADC/PIN_1)
 +  - This calculation is repeated using CODE2/CODE3 and CODE3/CODE4 to calculate SLOPE2/INTERCEPT2 and SLOPE3/INTERCEPT3 respectively
 +  - These will be used to calculate the unknown input power level, PIN, when operation in the field using the equation
 +          * **PIN** = (CODE/SLOPE) + INTERCEPT
 +  - The observed code from the ADC will be compared to the calibration coefficient codes in order to retrieve the appropriate SLOPE and INTERCEPT calibration coefficients.
 +          * Example: If CODE from ADC is between CODE1 and CODE2, then SLOPE1/INTERCEPT1 should be used
 +\\
 +
 +----
 +===== Installing the Evaluation Software =====
 +  - Extract the file **CN0178_Evaluation_Software.zip** and open the file **setup.exe**.\\ \\ <WRAP left tip round box 60%>**NOTE:** It is recommended that you install the [[ftp://ftp.analog.com/pub/cftl/CN0178/|CN0178 Evaluation Software]] to the default directory path **C:\Program Files (x86)\Analog Devices\CN0178\** and all National Instruments products to **C:\Program Files\National Instruments\**</WRAP> {{:resources:eval:user-guides:circuits-from-the-lab:cn0178:1.png?nolink&500|}}
 +  - Click **Next** to view the installation review page\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0178:2.png?nolink&500|}}\\ \\
 +  - Click **Next** to start the installation\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0178:3.png?nolink&500|}}\\ \\
 +  - Upon completion of the installation of the **CN-0178 Evaluation Software**, the installer for the **ADI SDP Drivers** will execute.\\ \\ <WRAP left tip round box 60%>**NOTE:** It is recommended that you close all other applications before clicking **“Next”**.  This will make it possible to update relevant system files without having to reboot your computer.</WRAP>\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0178:4.png?nolink&500|}}\\ \\
 +  - Press **“Next”** to set the installation location for the **SDP Drivers**.\\ \\ <WRAP left round tip 50%>It is recommended that you install the drivers to the default directory path \\ **C:\Program Files\Analog Devices\SDP\Drivers**</WRAP>\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0178:5.png?nolink&500|}}\\ \\
 +  - Press **“Install”** to install the **SDP Drivers** and complete the installation of all software.  Click **"Finish"** when done.\\ \\ {{:resources:eval:user-guides:circuits-from-the-lab:cn0178:6.png?nolink&500|}}
 +
 +----
 +===== Using the Evaluation Software =====
 +==== Main Window ====
 +{{ :resources:eval:user-guides:circuits-from-the-lab:cn0178:9.png?700 |}}
 +  - **Connect** Button - Starts the connection between the [[ADI>CN0178|CN0178 Evaluation Board]] and [[ADI>EVAL-SDP-CB1Z|SDP-B Controller Board]].
 +  - **Disconnect** Button - Ends the connection between the [[ADI>CN0178|CN0178 Evaluation Board]] and [[ADI>EVAL-SDP-CB1Z|SDP-B Controller Board]]
 +  - **SDP Connector** - Selects which 120-pin connection of the SDP-B Board to use
 +  - **Input Power** - Indicate input signal power level
 +  - **Frequency** - Indicate input signal frequency
 +  - **Data Acquisition** Controls \\ {{ :resources:eval:user-guides:circuits-from-the-lab:cn0178:10.png?700 |}}
 +      * **Sample Data** - Start acquisition of measurement data 
 +      * **Remove Data Point** - Remove a data point from samples
 +      * **Clear Data** - Clear the current measurement data
 +      * **Save Data** - Save measurement data to file
 +  - **Sample Data Graph** Tab - Shows the XY plot of ADC code and output error (%) with respect to the shunt voltage\\ {{ :resources:eval:user-guides:circuits-from-the-lab:cn0150:11.png?nolink&700 |}}
 +      * **Plot Options** - Edit plot display and options like interpolation and color of output waveform
 +  - **Calibration** Tab
 +      * **Calibration Inputs** - Four point input power levels used for calibration purposes
 +      * **Calibration Data** - Enable calibration of the device
 +      * **Calibration Coefficients** - Read only. Calculated calibration coefficients based on four point input power levels
 +  - **Administration** Tab \\ {{ :resources:eval:user-guides:circuits-from-the-lab:cn0150:15.png?nolink&600 |}}
 +      * **Read Firmware** - Reads the firmware of CN0150 Evaluation Board 
 +      * **Flash LED** - Flashes the LED on the SDP controller board
 +  - **Quit** Button - Closes the evaluation software
 +\\
 +
 +==== Running the System ====
 +  -Open the CN0178.exe application from the default installation location
 +  -Set the correct connector and click the Connect Button
 +  -Upon successful connection, calibrate the device through the calibration tab
 +  -After proper calibration, set the correct input parameters and control the data measurement through the data acquisition control buttons
 +  -Click Disconnect if finished
 +  -Click Quit to exit the program
 +
 +\\
 +----
 +
 +===== More Information and Useful Links  =====
 +  * [[ftp://ftp.analog.com/pub/cftl/CN0178/|CN0178 Evaluation Software]]
 +  * [[ADI>CN0178|CN0178 Circuit Note Page]]
 +  * [[adi>media/en/reference-design-documentation/design-integration-files/CN0178-DesignSupport.zip|CN0178 Design Support Package]]
 +
 +  * [[ADI>ADL5902|ADL5902 Product Page]]
 +  * [[ADI>AD7466|AD7466 Product Page]]
 +  * [[ADI>ADG3231|ADG3231 Product Page]]
 +
 +===== Schematic, PCB Layout, Bill of Materials =====
 +
 +<WRAP round 80% download>
 +[[adi>media/en/reference-design-documentation/design-integration-files/CN0178-DesignSupport.zip|EVAL-CN0178-SDPZ Design & Integration Files]]
 +  * Schematics 
 +  * PCB Layout 
 +  * Bill of Materials 
 +  * PADS project
 +</WRAP>
 +
 +=====Registration===== 
 +<WRAP round tip 80% >
 +Receive software update notifications, documentation updates, view the latest videos, and more when you register your hardware.  [[reg>EVAL-CN0178-SDPZ?&v=Rev C|Register]] to receive all these great benefits and more!</WRAP>
 +
 +//End of Document//
  
resources/eval/user-guides/circuits-from-the-lab/cn0178.txt · Last modified: 23 Mar 2022 05:53 by Trisha Cabildo