background image

Communications Programs 

The DPX-200 transmits data via its 
RS-232 output as soon as it is pow-
ered up.  In order to receive the da-
ta, a communications (or terminal) 
program must be running on your 
computer. We recommend 

Tera 

Term

;

 it is easy to use, free, and 

available for download from 
www.download.cnet.com. When you 
reach that page, type “Tera Term” in 
the Search box; you will then be able 
to download the installation program. 
Then: 
 
1.  Install the program and run it. 

2.  A 

New Connection

 window will 

open. Click the “Serial” button, 
then select the COM port you 
will be using, and click OK. 

3.  Tera Term should now ready to 

receive data from the DPX-200. 
Make sure they are connected 
via the adapter cable, and pow-
er up the DPX-200. 

4.  Introductory text will be dis-

played indicating the version of 
the embedded program. The 
computer will then display three 
numbers: Relative Humidity, 
Dry Bulb Temperature, and 
Dew Point. New readings will 
be displayed every few seconds 
and are in a comma delimited 
format that can be copied and 
pasted into a spreadsheet pro-
gram, if desired. 

If readings are not displayed,

 turn 

the DPX-200 off, and in Tera Term 
click on 

Setup

 in the menu bar, then 

select 

Serial Port

. This will open a 

window where you can check sev-
eral parameters: 
 

 

Port: 

Try another port until you 

find the right one. 

 

Baud rate: 

Should be 9600. 

 

Data: 

8 bit 

 

Parity: 

None 

 

Stop: 

1 bit 

 

Flow Control: 

Off  

 
Once you get a working display you 
may want to save your settings. 
Refer to Tera Term’s help file for 
information on this and other func-
tions. 
 
Other communications programs 
can also be used; some older ver-
sions of Windows include one 
called HyperTerminal. Refer to its 
help file for information on using it 
and applying the parameters above. 

Summary of Contents for DPX-200

Page 1: ...F SLS 554 A Phone 410 820 5111 Toll Free 800 626 7713 Fax 410 822 9633 www ohmicinstruments com Sales sales ohmicinstruments com Service service ohmicinstruments com Ohmic Instruments 3081 Elm Point I...

Page 2: ...ssion of Ohmic Instruments Information contained in this manual is believed to be accurate and reliable however no responsibility is assumed by Ohmic Instruments for its use Ohmic reserves the right t...

Page 3: ...ryer systems as well as ambient conditions The DPX 200 determines the dew point temperature from the measurements of water vapor and dry bulb temperature of the air sample These dew point calculations...

Page 4: ...smitter operates as a 4 wire device DO NOT TIE THE POWER CONNECTION TO THE SIGNAL OUTPUT ON THE TRANSMITTER THIS WILL DAMAGE THE UNIT For analog output values refer to the table on Page 9 1 Power 18 2...

Page 5: ...nnecting to a serial port If your DPX 200 includes the optional RS 232 adapter cable it can be con nected to your computer s 9 pin PC serial COM port If your computer has a 25 pin COM port 25 pin to 9...

Page 6: ...indicating the version of the embedded program The computer will then display three numbers Relative Humidity Dry Bulb Temperature and Dew Point New readings will be displayed every few seconds and a...

Page 7: ...from 0 to 32767 For n 0 1 and 2 automatic trans mission is turned off Default value is n 3 seconds Note To enable the screen to dis play what you are typing go to the menu bar in Tera Term click on Se...

Page 8: ...nication Setup HC 610 10K NTC Thermistor 45 to 90 F 40 to 80 F 4 F from 40 to 20 F 2 F from 20 to 80 F 0 200 F 1 F Probe 0 to 185 F Electronics 40 to 120 F 175 psig for remote probe 10 sec for 63 step...

Page 9: ...27 0 542 5 733 4 1 833 9 867 32 3 000 13 600 63 4 292 17 733 26 0 583 5 867 5 1 875 10 000 33 3 042 13 733 64 4 333 17 867 25 0 625 6 000 6 1 917 10 133 34 3 083 13 867 65 4 375 18 000 24 0 667 6 133...

Page 10: ...he instrument returned transportation prepaid SHIPPING TO MANUFACTURER FOR REPAIR OR ADJUSTMENT All shipments of Ohmic Instruments products should be made via United Parcel Service or Best Way prepaid...

Page 11: ...11...

Page 12: ...12...

Reviews: