Is there a procedure on how to program the Model 211 and Model 405 nm?

Technical Note No. 037

Procedure for Programming Model 211 Ozone Monitor and Model 405 nm 
NO2/NO/NOx Monitor

Date: 29 April 2014

Author: Craig Williford

Requirements
Programming the Model 405 and 211 monitors requires a computer running the "Analog 
Devices Serial Downloader" program to download the firmware from the computer to the 
monitor, and the straight through rs232 serial cable provided by 2B Technologies. The 
computer must have a serial port or a USB port with a USB to Serial converter cable to 
connect to the rs232 serial cable provided by 2B Technologies. 

Procedure

I. Install Windows Serial Downloader Application
       1. If not already installed, please install the WSD.exe application provided by 2B Technologies. 
       2. In the “Configuration” menu on the WSD, set the Port number to the COM port that corresponds to the one your serial connector is connected to. Normally this is COM1 unless you do not have a serial port on your computer and you are using a serial to USB converter. If using the serial to USB converter, check in Windows Device Manager for the correct port number corresponding to the converter. 

II. Record all stored parameters
        1. Enter the main menu and write down or record calibration parameters (CF, SF, 
NO2 and NO slope, NO2 and NO zero), averaging frequency. This is imperative as you will need to re-enter these parameters after programming the new firmware.

III. Removal of top cover 
         1. Remove the six screws on the tops of the sides securing the top cover on.
         2. Remove the unscrewed lid. 

IV. Programming instrument
         1. Plug in 12V power source for instrument.
         2. Connect RS232 cable to D9 connector on back of instrument and other end to PC.
         3. Open a serial emulator such as the 2B Data Display Software, Teraterm, or Hyperterminal on available com port running at 9600 Bits per second, 8 data bits, No parity, 1 stop bit, hardware flow control.
        4. Locate “sw2” on circuit board. It is a small push button switch located above the pressure sensor. 
        5. Press and hold the button labeled "sw2" on the PCB.
        6. Power on the instrument.
        7. Look on the serial emulator window for data output starting with "ADuC834". (If data not seen on the terminal, repeat steps 5-7 until you see the data output.)
       8. The instrument is now ready to have a new program downloaded to it from the PC through the RS232 cable.
      9. Close the terminal screen which will release the COM port. 
     10.Open the WSD (Windows Serial Downloader)
     11.Press the "Reset" button on the WSD screen. 
     12.When the board is Reset properly the WSD screen will output this: Configuration: COM1, 9600 baud, RESETTING PART: OK
     13.Press the "Download" button on the WSD screen. 
     14.Choose the .hex file to download (For example: NO405VER23K.hex)
     15.You will see a bar on the WSD screen showing the progress of the download. When the bar has completed the download is successful.
    16.Cycle Power to be sure the new version starts correctly.

V. Replace top cover and re-enter menu parameters
     1. Replace top cover in the reverse process as removal. 
     2. Re-enter all parameters recorded in step 1 of section II.