Televac AN 3007: Changing the MM200 Analog Output Settings

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Description

This application note explains the process for changing the MM200 analog output settings from a Windows PC. The serial communications program Tera Term must be installed prior to following these instructions, and a serial to USB converter must be purchased. If you don’t have Tera Term installed, click here to install the latest version from GitHub.

Instructions

1. Plug the serial to USB converter into your PC.

2. Open the Start Menu.

3. Open the Control Panel.

4. Open Hardware and Sound.

5. Open the Device Manager.

6. Expand the Ports (COM & LPT) drop down.

7. Determine the COM port assignment for your USB to serial converter, in this example the converter is assigned to COM3.

8. Open TeraTerm.

9. Open the Setup menu and select the Serial port… option.

10. Change the Port setting to the COM port for your USB to serial converter, in this example it is COM3.

11. Ensure that the remainder of the settings are the following, then select OK:

  1. Baud rate: 9600
  2. Data: 8 bit
  3. Parity: none
  4. Stop: 1 bit
  5. Flow control: none
  6. Transmit delay: 0 msec/char, 0 msec/line

12. Open the Setup menu and select the Terminal setup… option

13. Ensure that the settings are the following, then select OK:

  1. Receive: CR+LF
  2. Transmit: CR+LF
  3. Local echo checked

14. Send the following commands to change the analog output setting, this example changes the 7B output to Linear (<CR> is equivalent to pressing the Enter key). A full list of commands and analog output options can be found in the table below.

  1. R7BN<CR>
  2. SE<CR>
Sensor Command Name Range (Torr) V/Division Description
1E/F R1EN Linear 1/100 to 1000/10,000 0 to 10 V 10 V = 1000/10,000 Torr
1E/F R1EM Linear/Decade 1/100 to 1000/10,000 2.00 V/Decade 10 V = 1000/10,000 Torr
1E/F R1EL Logarithmic 1/100 to 1000/10,000 3.33 V/Decade 10 V = 1000/10,000 Torr
2A R2AN Linear 10-3 to 1 0 to 10 V 10 V = 1 Torr
2A R2AL Logarithmic 10-3 to 1 3.33 V/Decade 10 V = 1 Torr
2A R2AT Traditional 10-3 to 20 0 to 10 V 10 V = 10-3 Torr
2A R2AR Linear Revised 10-3 to 1 0 to 10 V 10 V = 10-3 Torr
3F  R3FM Linear/Decade 10-11 to 10-2 1.00 V/Decade 10 V = 10-2 Torr
3F R3FL Logarithmic 10-11 to 10-2 1.00 V/Decade 10 V = 10-2 Torr
3F R3Fx Linear 10-2 to 10-x 0 to 10 V 10 V = 10-8<-x<-2 Torr
4A R4AN Linear/Decade 10-3 to 1000 1.00 V/Decade 10 V = 1000 Torr
4A R4AU Linear 10-3 to 1 0 to 10 V 10 V = 1 Torr
4A R4AT Linear 10-3 to 10 0 to 10 V 10 V = 10 Torr
4A R4AL Logarithmic 10-3 to 1000 1.67 V/Decade 10 V = 1000 Torr
5A/B/C/D/E/F R5AN Linear Full Scale 0 to 10 V 10 V = Full Scale
5A/B/C/D/E/F R5AL Logarithmic 3 Decades 3.33 V/Decade 10 V = Full Scale
7B R7BM Linear/Decade 10-7 to 10-3 2.00 V/Decade 10 V = 10-3 Torr
7B R7BL Logarithmic 10-6 to 10-3 3.33 V/Decade 10 V = 10-3 Torr
7B R7BE Extended Logarithmic 10-7 to 10-3 2.50 V/Decade 10 V = 10-3 Torr
7B R7BN Linear 10-6 to 10-3 0 to 10 V 10 V = 10-3 Torr
7B R7BT Traditional 10-7 to 10-3 0 to 10 V 10 V = 10-3 Torr
7E R7EM Linear/Decade 10-8 to 10-2 1.00 V/Decade 10 V = 10-2 Torr (4 to 10 V)
7E R7EL Logarithmic 10-8 to 10-2 1.67 V/Decade 10 V = 10-2 Torr
7E R7Fx Linear 10-2 to 10-x 0 to 10 V 10 V = 10-7<-x<-2 Torr
7F/FC/FCS R7FM Linear/Decade 10-11 to 10-2 1.00 V/Decade 9 V = 10-2 Torr
7F/FC/FCS R7FL Logarithmic 10-11 to 10-2 1.00 V/Decade 9 V = 10-2 Torr
7F/FC/FCS R7Fx Linear 10-2 to 10-x 0 to 10 V 10 V = 10-8<-x<-2 Torr

15. This process can be repeated as many times as necessary for different sensors until all of the desired analog outputs are changed.

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