Vaisala BAROCAP PTB330 Guía de usuario Pagina 83
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Chapter 4 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 81
ICAOQNH
The ICAOQNH command selects the calculation formula and
rounding method used for QNH and QFE calculations.
For calculation formulas, see Appendix A, Calculation Formulas, on
page 133.
ICAOQNH [?] [ON/OFF]
where:
? = Displays the current ICAOQNH status.
ON = ICAO QNH calculation formula, QNH and QFE values
rounded down to nearest integer. Only units [hPa] and [mmHg]
are available for QNH and QFE.
OFF = Default QNH calculation formula, no rounding other than
specified with FORM command on page 70. All pressure units
for QNH an
d QFE are available.
NOTE
Although ICAOQNH is ON, you can use the FORM command (on
page 70) to force the display of decimal places on QNH and QFE
values. Because of ICAOQNH rounding, these decimal places are
always filled with zeros.
Query syntax:
>ICAOQNH ?
ICAO QNH : OFF
>
Prompt syntax:
>ICAOQNH
ICAO QNH : OFF ? ON
>
Command line syntax:
>ICAOQNH OFF
ICAO QNH : OFF
>
- USER'S GUIDE 1
- Table of Contents 3
- CHAPTER 4 4
- List of Figures 8
- List of Tables 9
- GENERAL INFORMATION 11
- ESD Protection 13
- Recycling 14
- Trademarks 14
- License Agreement 14
- Warranty 14
- PRODUCT OVERVIEW 15
- Basic Features and Options 16
- Pressure Measurement 16
- INSTALLATION 19
- Kit for Pole or Pipeline 21
- Mounting Rain Shield with 24
- Installation Kit 24
- Panel Mounting Frame 24
- Pressure connections 26
- Cable Bushings 27
- Grounding the Cables 28
- Alternate Wiring Systems 29
- WARNING 30
- M-12 (8-Pin) Connector 32
- D-9 Connector 33
- AC Power Supply Module 34
- Installation 35
- Warnings 36
- Analog Output Module AOUT-1T 40
- Relay Module RELAY-1L 42
- (RS485-1) 44
- Installation and Wiring 45
- 1102-028 46
- OPERATION 49
- Menus and Navigation 50
- Reading 51
- Graphic History 53
- Information Display 55
- Display Settings 56
- Rounding 57
- Backlight 57
- Contrast 57
- Keypad Lock 57
- Measuring Settings 58
- Diagnostic Settings 58
- Serial Interface Settings 59
- System Settings 60
- Factory Settings 61
- Clearing Graph Displays 61
- CAUTION 61
- Relay Settings 62
- Analog Output Settings 64
- Serial Line Communication 66
- User Port Connection 67
- Service Port Connection 68
- Terminal Program Settings 68
- 0810-070 69
- List of Serial Commands 70
- General Settings 72
- Table 14 Quantity Symbols 74
- UNIT [x] [y] 76
- DATE and TIME 77
- TIME [?] [x] 78
- Measurement Related Commands 79
- DPMAX [x] [y] [?] 80
- DPMAX 80
- AVRG [x] [?] 81
- HHCP [?] [x] [y] 81
- HQFE [?] [x] [y] 82
- HQNH [?] [x] [y] 82
- ICAOQNH 83
- PSTAB [?] [x] [y] 84
- User Port Serial Settings 86
- SMODE [x] 87
- INTV [xxx yyy] 88
- ECHO [x] [y] 88
- System Information Commands 89
- Resetting Barometer by Using 90
- Locking Menu/Keypad by Using 91
- Data Recording 92
- Selecting Data Recording 92
- Quantities 92
- View Recorded Data 93
- Operating Relays 95
- Quantity for Relay Output 95
- 1102-007 96
- Enabling/Disabling Relays 98
- Setting Relay Outputs 98
- RTEST to test 100
- RTEST [x1 x2] 100
- Operating RS-485 Module 101
- Networking Commands 101
- SMODE POLL 102
- OPEN [aa] 103
- SEND [aa] 103
- Operating Analog Output 104
- Analog Output Quantities 106
- Analog Output Tests 107
- Setting 107
- MAINTENANCE 109
- INFO button to display the 110
- Table 18 Error Messages 111
- Technical Support 112
- Product Returns 112
- CALIBRATION AND ADJUSTMENT 113
- Pressure Adjustment 115
- Serial Line 118
- LCP1 (LCP2 119
- MPCP1, MPCP2, MPCP3 120
- MPCP1 [x/y] [z] 121
- Activate MPCP1 adjustment: 122
- Using Display/Keypad 123
- Using Serial Line 124
- TECHNICAL DATA 127
- Operating Environment 128
- Inputs and outputs 129
- Mechanics 130
- Technical Specifications of 130
- Optional Modules 130
- Table 30 Relay Module 131
- Options and Accessories 132
- Dimensions (in mm) 133
- CALCULATION FORMULAS 135
- ICAOQNH Mode for QNH and QFE 136
- UNIT CONVERSION TABLES 137
- Min...Max 138
- PA11A EMULATION MODE 141
- PA11A Message Format 142
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