7.2 Sensor Features................................................................................................ 102
7.3 Present Weather Measurements....................................................................... 104
7.4 Sensor Specifications....................................................................................... 110
7.5 VPF-700 Series of Sensors - Dimensions........................................................ 117
8INDEX......................................................................................................................... 118
9NOTES:....................................................................................................................... 123
FIGURES
Figure 1-1 VPF-730 in its packaging ........................................................................... 2
Figure 1-2 Example of VPF-710 and VPF-730 Connectors....................................... 4
Figure 1-3 VPF-750 Connectors................................................................................... 5
Figure 1-4 VPF-710 Orientation ................................................................................. 24
Figure 1-5 VPF-730 and VPF-750 Orientation.......................................................... 24
Figure 1-6 U-bolt Mounting Method.......................................................................... 25
Figure 1-7 VPF-750 System........................................................................................ 26
Figure 1-8 Precipitation Sensor Mounting Details ................................................... 27
Figure 5-1 Assembly of Calibration Reference Plaque............................................ 78
Figure 6-1 Sensor Sample Volume ............................................................................ 84
Figure 6-2 Effects of Atmosphere on Perceived Brightness of Target Objects... 85
Figure 6-3 Precipitation Matrix................................................................................... 97
Figure 6-4 VPF-700 Sensor Functional Block Diagram........................................... 98
Figure 7-1 VPF-730 Model Dimensions (mm)........................................................ 117
TABLES
Table 1-1 AC Power Connections................................................................................. 5
Table 1-2 DC Power Connections ................................................................................ 5
Table 1-3 RS232 Signal Connections .......................................................................... 6
Table 1-4 RS422/485 Signal Connections .................................................................. 6
Table 1-5 Combined Power and Data Connections................................................... 7
Table 1-6 Options word (lower byte)........................................................................ 10
Table 1-7 Recommended Sensor Height Above Ground........................................ 23
Table 1-8 Remote Self-Test and Monitoring Message Fields................................. 32
Table 2-1 VPF-710 Compressed Data Massage....................................................... 37
Table 2-2 VPF-710 Expanded Data Message........................................................... 39
Table 2-3 VPF-730 Compressed Data Message....................................................... 42
Table 2-4 VPF-730 Expanded Data Message........................................................... 44
Table 2-5 Message Extension for WSM .................................................................... 46
Table 2-6 Message Extension for ALS....................................................................... 46
Table 2-7 VPF-750 Compressed Data Message....................................................... 49
Table 2-8 VPF-750 Expanded Data Message........................................................... 54
Table 2-9 METAR Codes.............................................................................................. 56
Table 3-1 Commands for VPF-700 Series of Sensors............................................. 60
Table 3-2 Command R? Response............................................................................. 62
Table 3-3 Responses from Sensor............................................................................. 65
Table 7-1 Visibility Measurement Specification ..................................................... 105
Table 7-2 Additional Measurement Capabilities VPF-730..................................... 105
Table 7-3 Additional Measurement Capabilities VPF-750..................................... 106
Table 7-4 Past Weather Determination VPF-750 .................................................. 106
Table 7-5 Sensor Specifications............................................................................... 111
Table 7-6 Sensor Characteristics ............................................................................. 113
Table 7-7 Digital Communication Interface Specifications .................................. 114
