Vaisala HMT120 User Manual Page 26
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- TROUBLESHOOTING
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User's Guide _______________________________________________________________________
24 ___________________________________________________________________ M211244EN-B
4. After the driver has been installed, connect the USB service 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.
Windows will recognize each individual cable as a different device, and
reserve a new COM port. Remember to use the correct port in the
settings of your terminal program.
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.
Terminal Application Settings
The default settings of the HMT120 serial interface are presented in
Table 4.
Table 4 Default Serial Interface Setting
Property
Value
Baud rate
19200
Parity
None
Data bits
8
Stop bits
1
Flow control
None
The steps below describe how to connect to the HMT120 using the
PuTTY terminal application for Windows (available for download at
www.vaisala.com) and a USB serial interface cable:
1. Connect the USB cable between your PC and the service port of the
HMT120.
2. Start the PuTTY application.
3. Select the Serial settings category, and check that the correct COM
port is selected in the Serial line to connect to field.
NOTE
You can check which port the USB cable is using with the Vaisala USB
Instrument Finder program that has been installed in the Windows
Start menu.
- USER'S GUIDE 1
- Table of Contents 3
- CHAPTER 5 4
- CHAPTER 6 5
- CHAPTER 7 5
- APPENDIX A 5
- List of Figures 6
- List of Tables 6
- GENERAL INFORMATION 7
- Version Information 8
- Related Manuals 8
- Documentation Conventions 8
- Recycling 9
- Regulatory Compliances 10
- Patent Notice 10
- Trademarks 10
- License Agreement 10
- Warranty 10
- PRODUCT OVERVIEW 11
- Interchangeable Probe 12
- Accessories 12
- Optional Display 12
- Constant Output Probe 13
- Transmitter Components 14
- INSTALLATION 15
- Mounting 16
- 1011-150 17
- 1303-034 18
- Duct Installation Kit 19
- 0505-177 20
- 0505-178 20
- Probe Mounting Flange 21
- Probe Mounting Clamp 22
- Connections 23
- 1011-152 24
- SERVICE PORT 25
- 0807-004 27
- List of Serial Commands 28
- Show Device Information 29
- Set/Show Calibration Date 30
- Show Analog Output Status 32
- Serial Line Output Commands 33
- Stop Continuous Outputting 34
- Set/show Output Interval 34
- Output a Reading Once 34
- Calibration Commands 35
- Calibrate Analog Output 37
- Set/Show Terminal Echo 38
- Configuring Analog Output 40
- Examples: 41
- Test Analog Outputs 42
- Other Commands 43
- Set/show Output Formatting 44
- Display Command List 45
- Display Active Errors 45
- Save Changed Settings 45
- Restore Saved Settings 46
- Reset Transmitter 46
- Restore Factory Settings 46
- Set/show Output Unit 47
- MAINTENANCE 49
- Fixed Probe Model 50
- Remote Probe Model 51
- Calibration and Adjustment 52
- Adjustment with HM70 56
- Reference Probe 57
- 0505-185 58
- 0505-186 58
- LiCl-NaCl Adjustment 59
- Calibrated Reference Probe 60
- Adjustment with HMI41 61
- Offset and Gain Adjustments 63
- MODE. The following display 65
- Troubleshooting 66
- Analog Output Tests 67
- TROUBLESHOOTING 69
- Solving Typical Problems 70
- Technical Support 71
- TECHNICAL DATA 73
- Table 12 Inputs and Outputs 74
- Options and Accessories 75
- Transmitter Dimensions 76
- 1011-159 77
- CALCULATION FORMULAS 79
- Dewpoint Temperature 80
- Dew/frostpoint Temperature 80
- Mixing Ratio 81
- Absolute Humidity 81
- Enthalpy 81
- Saturation Vapor Pressure 82
- Water Vapor Pressure 83
- *M211244EN* 87
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