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Texas Instruments WR-25 manual

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Table of contents for the manual

  • Page 1

    Weather Report ™ Digital Weather Station WR-25 index Thank you for purchasing a Weather Report. Your package should contain a WR-25 console, wind sensor, temperature/humidity sensor, rain collector and this manual. Normal Operation When in normal operation (no buttons depressed). the instrument displays current wind direction and speed, cycles cu[...]

  • Page 2

    C A U T I O N !! :BE EXTREMELY CAREFUL NOT TO TOUCH ANY HIGH POWER LINES DURING INSTALLATION OF THE VARIOUS SENSORS!!! The WR-25 wind direction and speed sensor is normally mounted on television type antenna masts ( see Figure 1 ). For best results the wind sensor should be mounted at least 10 feet above the roof of the building. The higher the ins[...]

  • Page 3

    OPERATION index / top FUNCTION KEYS Select The select key, when pressed at the same time as the report key, puts the unit into time/date and lunar/tide cycle set mode. When the select and scale keys are pressed at the same time, the unit enters the calibration set mode. When the select and average keys are pressed at the same time, the unit enters [...]

  • Page 4

    English to Metric equivalents are miles per hour or Knots to Kilometers per hour, Fahrenheit to Celsius, Inches of Mercury to Millibars, Inches of rain to Centimeters of rain. Pressing the select and scale key at the same time puts the unit into calibration mode. Report Pressing the report key sends current data to the serial port. The report key, [...]

  • Page 5

    Press select a second time, and the month will be displayed (i.e., 1 = Jan. and 12 = Dec.). Press the maximum and minimum key to set the month. Press select a third time, and the day of the month (1-31) digits light. Press the maximum to advance the date and minimum to retard the date. Press select a fourth time, and the day of the week is displaye[...]

  • Page 6

    Press select a fifth time (note the colon between the hours and minutes), and the unit will display the time in military hour style. Press the maximum button to advance the hour or minimum to retard the hour. Press select a sixth time (note the colon between the hours and minutes), and the unit will display minutes. Press the maximum or minimum but[...]

  • Page 7

    Press select a tenth time (the single dot is now located at the top, between the hour and minute); the peak of the cycle hour (usually high tide) will be displayed. Change as desired. Press select an eleventh time (the single dot remains at the top between the hour and minute), and the minutes of the peak hour will be displayed. Change as desired. [...]

  • Page 8

    Press select a second time and the unit displays the indoor temperature. Press the maximum or minimum key to enter the actual temperature. Press select a third time - the unit displays the outdoor temperature. Press the maximum or minimum key to enter the actual temperature. Press select a fourth time, and the unit displays barometric pressure. Pre[...]

  • Page 9

    Press select a fifth time, and the unit displays in the rainfall window: 0, 1, 2, or 3. 2 is the normal display. Press the maximum or minimum key to enter the proper number ( see calibration reference for more information). Press select a sixth time; the unit will display in the rainfall window a reading ranging from .01 to .1. Press the maximum or[...]

  • Page 10

    Press select a third time, and the minimum/maximum and form feed options 0 through 7 may be selected as illustrated in the table below: SETTING MIN/MAX FORM FEED RAIN RATE 0 OFF OFF OFF 1 ON OFF OFF 2 OFF OFF OFF 3 ON ON OFF 4 OFF OFF ON 5 ON OFF ON 6 OFF OFF ON 7 ON ON ON When rain rate is off, term rain is substituted. Press select a fourth time [...]

  • Page 11

    V- Firmware version number S- Firmware Serial# I- Unit ID number C- Unit responds with a daily minimum and maximum of all parameters, then clears. The rainfall rate is present rather than term rain. Sample MIN 07/24/90 SW 00MPH 070F 067F 067F 054% 30.00" 00.19"D 01.38"M 00.00"R MAX 07/24/90 SSE 25MPH 052F 071F 092F 099% 30.06&qu[...]

  • Page 12

    index / top The TWI_LOG program. TWI_LOG is an IBM PC software utility which enables the user with special applications to communicate and set various functions of the WRL. Insert the TWI_LOG diskette into your disk drive and type TWI_LOG then press enter. Note: TWI LOG is no longer sent with the weather stations. The TWI Cal Windows program has re[...]

  • Page 13

    TWI Main Menu F1 Report Output F2 Retrieve Log Data F3 Display Log Data F4 Purge Log Data F5 Display Cal Data F6 Graphic Log Data F7 Print Log Data F8 Get Version again F9 Set Date/Time F10 Exit Program Pressing F1 enables the user to communicate with the WRL using all the commands referred to in the Communicating with the WRL (page 14 ) Section of[...]

  • Page 14

    Inx Value Description Inx Value Description 1 85 temp:aux 20 94 clock years 2 65 temp: inside 21 11 clock month 3 73 temp: outside 22 22 clock day of month 4 29.92 barometric pressure 23 2 clock day of week::Mon: 5 0 elevation 24 11 clock hours 6 0.750 MVP @ 0.0% HR 25 24 clock minutes 7 3.255 MVP @ 73.3% HR 26 54 clock seconds 8 8 wind dir. offset[...]

  • Page 15

    hours or minutes depending on the setting of the report interval units (19) 15) Report output interval LO , sets the automatic data dump interval to the RS232. Value can be in minutes or seconds depending on the setting of the report interval unites (19). 16) Report Min/Max turns on the min-max function for the log and the report output (for the pr[...]

  • Page 16

    Pressing F10 will exit the program. Direct data retrieval from a DOS prompt may be accomplished by entering TWI_LOG ? /dl , where the ? equals the line of the unit as defined in the twi_com.dat file. For example entering TWI_LOG 1 /dl would access in our current setup the Green unit. Entering TWI_LOG 2 /dl would access the Red unit. After the data [...]

  • Page 17

    The pin out on the RS-232interface is as follows: . DE 9 Plug Header Pin 1 Pin 1 . . . Pin 2 Pin 3 . . . Receive Data Pin 3 Pin 5 . . . Transmit Data Pin 4 Pin 7 . . . . Data Set Ready Pin 5 Pin 9 . . . Signal Ground Pin 6 Pin 2 . . . Data Terminal Ready (must be true to send data) Pin 7 Pin 4 . . . Clear to Send Pin 8 Pin 6 . . . Request Send Pin [...]

  • Page 18

    Normally, barometric pressure is the only item that needs to be recalibrated (adjusting for altitude). The proper local barometric pressure can be obtained from the local news. Set the barometric pressure reading you obtained from the local media by using the calibration mode function. Temperature If for some reason you suspect that the temperature[...]

  • Page 19

    SETTING MIN/MAX FORM FEED RAIN RATE 0 OFF OFF OFF 1 ON OFF OFF 2 OFF OFF OFF 3 ON ON OFF 4 OFF OFF ON 5 ON OFF ON 6 OFF OFF ON 7 ON ON ON When rain rate is off, term rain is substituted. Min/Max, when selected outputs at midnight the minimum and maximum value for the day. The report function must be on in order for the output to occur. This functio[...]

  • Page 20

    to your area, any cycle that lasts between 1 and 99 hours may be displayed. Clearing the Memories When the clear button is depressed and held, the unit will display the date and time the instrument's memory was last cleared. In order to clear the memories, the clear and minimum button must be pushed at the same time. The items cleared are as f[...]

  • Page 21

    FCC RADIO FREQUENCY INTERFERENCE STATEMENT NOTE : This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15, Subpart B, of the FCC Rules. This equipment generates, uses, and can radiate radio frequency energy. If not installed and used in accordance with the instructions, may cause interfer[...]

  • Page 22

    1/6/96 Troubleshooting index / top I nstrument display does not come on. Make sure receptacle has power by plugging another appliance into it. Check that the transformer is properly wired into instrument (the leads could be reversed or not seated properly). Check that the fuse is intact (.75 amp fuse inside the case). Try unplugging the transformer[...]

  • Page 23

    B Barometric Pressure , 20 Barometric pressure calibration , 16 baud rate , 17 C Calibration Method , 8 Calibration mode , 8 Calibration Reference , 20 Clear , 4 Clearing the Memories , 23 Comfort , 5 Command Characters , 12 Communicating with the WR-25 , 12 Computer Interface , 20 Control Options , 18 D Daily rainfall history register , 17 daily r[...]

  • Page 24

    lunar/tide cycle , 4 M Maximum , 4 Minimum , 4 minutes , 17 modem adapter , 19 Modem Installation , 19 month , 17 N Normal Operation , 1 O OPERATION , 4 Outside temperature calibration , 16 P pagoda, 2 , 26 Print Set , 11 prn_day.??? , 18 prn_rec.??? , 18 R rain collector, 17 , 21 Rain collector type , 16 Rain increment value , 17 Rainfall , 21 Rai[...]

  • Page 25

    Special Key Functions , 22 T Temperature , 20 temperature/humidity sensor , 2 Term rainfall history register , 17 tide clock , 23 Time display , 17 Time Setting Mode , 6 Trend indicators , 1 Troubleshooting twi_com.dat , 14 TWI_LOG, 13 , 20 W Wind direction calibration , 16 Wind Speed scale , 17 Windchill , 5 , 13 Y years , 17 TOP WR-25 Instruction[...]