Vaisala GMP343 User Manual Page 30
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User’s Guide ______________________________________________________________________
28 ___________________________________________________________________M210514EN-E
4. After the driver has been installed, connect the USB cable to a USB
port on your PC. Windows will detect the new device, and use the
driver automatically.
5. The installation has reserved a COM port for the cable. Verify the port
number, and the status of the cable, using the Vaisala USB
Instrument Finder program that has been installed in the Windows
Start menu. The reserved ports are also visible in the Ports section of
the Windows Device Manager.
Remember to use the correct port in the settings of your terminal program.
Windows will recognize each individual cable as a different device, and
reserve a new COM port.
There is no reason to uninstall the driver for normal use. However, if you
wish to remove the driver files and all Vaisala USB cable devices, you can
do so by uninstalling the entry for Vaisala USB Instrument Driver from
the Programs and Features menu in the Windows Control Panel. In
Windows XP and earlier Windows versions the menu is called Add or
Remove Programs.
Opening a Terminal Connection
The communication interface of GMP343 is RS-232 or RS-485. In case
your device is configured to RS-485 communication mode you can still
start communication in RS-232 mode (for example when changing the
probe setting). See step number 4 in the following instructions.
1. Connect the GMP343 to the PC using the connection cable(s). Refer
to section Connection Cables on page 27.
2. Connect the power cables to a 11 ... 36 V power supply.
3. Open a terminal program and set the communication parameters.
When using the terminal session for the first time, save the settings for
future use.
4. Power-up the GMP343. The device should prompt as follows:
GMP343 - Version STD 2.0
Copyright: Vaisala Oyj 2003 - 2006
Table 3 Communication Parameters
Parameter Value
baud rate 19200
parity no
data bits 8
stop bits 1
flow control none
- USER’S GUIDE 1
- Table of Contents 3
- CHAPTER 4 4
- CHAPTER 5 5
- CHAPTER 6 5
- CHAPTER 7 5
- APPENDIX A 6
- APPENDIX B 6
- List of Figures 7
- List of Tables 9
- GENERAL INFORMATION 11
- ESD Protection 12
- Recycling 13
- Trademarks 13
- Regulatory Compliances 13
- Warranty 13
- PRODUCT OVERVIEW 15
- User Configurable CO 16
- Measurement 16
- GMP343 Transmitter Components 16
- Principle of Operation 17
- Optics Heating 18
- Gas Sampling 18
- Sampling System 19
- Optional Accessories 20
- Using MI70 as a Display 22
- Using MI70 in Recording 23
- INSTALLATION 25
- Wiring of the Junction Box 27
- OPERATION 29
- Opening a Terminal Connection 30
- Operation modes of the GMP343 32
- Measurement Units 33
- Interval 34
- Outputting the Reading Once 34
- Serial Communication Settings 36
- Formatting the Message 37
- Setting Time 38
- Networking Operation 39
- Open and Close 40
- Setting Echoing Mode 40
- Linearization 42
- Measurement Data Filtering 43
- Averaging Filter 44
- Smoothing Filter 44
- Setting the Median Filter 45
- Setting the Averaging Filter 46
- Setting the Smoothing Filter 46
- Oxygen Compensations 47
- Oxygen Compensation Mode 50
- Pressure Compensation ON/OFF 52
- Analog Output Hardware 54
- Output Range 55
- Concentration Range 56
- Setting the Low Limit of the 56
- Testing the Analog Output 57
- Commands 59
- Error Messages 60
- Command List 61
- Showing the Parameters 61
- Software Version Information 61
- Memory Handling 62
- Resetting the Transmitter 62
- CALIBRATION AND ADJUSTMENT 63
- Calibration (Checking) 64
- Adjustment in 1...2 Points 66
- Adjustment in 3...8 Points 67
- MAINTENANCE 71
- (Diffusion Model Only) 72
- 0704-021 73
- Error States 74
- Technical Support 75
- Product Returns 75
- TECHNICAL DATA 77
- Humidity, and Oxygen 78
- Response time (90 %) 79
- Inputs and Outputs 80
- Operating Conditions 81
- Materials 82
- Spare Parts and Accessories 82
- DIMENSIONS 83
- GMP343 (Flow-through) 84
- GMP343 (Diffusion) 85
- Calibration Cap 86
- Mounting Flange 87
- Junction Box 88
- Mounting Bracket 89
- LIST OF COMMANDS 91
- Filtering Commands 92
- Device Handling Commands 92
- Calibration Commands 93
- Advanced Measurement Commands 93
- *M210514EN* 94
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