Page
119
7.1.7
Transfer function
The transfer function mathematically defines the relationship between the auxiliary input voltage, and the
numeric data displayed on the instrument. This function is of no use to most users, but is provided here for those
interested in creating custom applications for the auxiliary inputs.
AuxDisplay = (AuxVoltage * AuxScaleFactor / 2.5) + AuxOffset
Where the
AuxDisplay
is the value shown on the screen,
AuxVoltage
is 0-5 Volts, the
AuxScaleFactor
is the
number entered into the 1SF, 2SF, 3SF or 4SF entry. The
AuxOffset
can be a positive or negative value.
Negative values are entered into the corresponding 1Off, 2Off, 3Off or 4Off entry as twice their magnitude – 1.
Positive entries are entered as twice their values. Thus, if the desired offset is –5, a value of 9 is entered into the
instrument. Similarly, if the desired offset is +8, 16 is entered.
7.2
Units – (Fahrenheit/Celsius and Gallons/Liters)
Three characters are displayed on this page. This first (leftmost) selects the units for the altimeter
setting, the next for temperature, and the rightmost character applies to the units used by the fuel flow
option.
a) To select inches of mercury (the US standard) for the altimeter setting, set the first character to an
"I"; for millibars, select "M".
b) To select fuel flow units (applies to flow rate & quantity) of U.S. Gallons, select “G”; for Liters
select “L” for the middle character.
c) To select temperature in units of degrees Fahrenheit, set the third (rightmost) character to “F”; for
Celsius select “C”.
CAUTION: The limits entered for all temperature data are not changed by this option. Be sure
to enter temperature limits in same units as you have chosen for display
.
7.3
FC1 & FC2 (Fuel Flow Activation Codes)
For instruments that include the fuel flow option, these entries have no use. For instruments originally
ordered without the fuel flow option, these codes are used to activate the fuel flow function, without
the need for returning the instrument to the factory for upgrade. In this way, you may easily add the
fuel flow option at any time by contacting Grand Rapids Technologies and ordering the fuel flow
option. We will supply you with the FC1 & FC2 codes, and a fuel flow sensor.
7.4
FloCal (Fuel Flow Calibration)
This entry allows for fine tuning the accuracy of the fuel flow function. The typical setting for entry is 200. To
adjust the FloCal entry to maximize the accuracy of the fuel flow function, keep track of the amount of fuel
burned by noting the amount of fuel added to the airplane over a period of time (at least 100 gallons), and the
amount of fuel used according the fuel flow function. If the amount of fuel used according the fuel flow function
is 1% low, increase the FloCal entry by 1%. Similarly, decrease the FloCal entry by the percentage the fuel flow
function is over-reporting fuel used.
The final FloCal entry should typically be within the range of 190-210. If your FloCal entry is outside this
range, you may have calculated it incorrectly, or you may have a problem with the fuel flow function caused by
flow fluctuations.
When dual fuel flow sensors are used, the FloBias setting must be made as described in the following section
before attempting to collect data for fine tuning of the FloCal setting.
Summary of Contents for 912 Dragonfly
Page 3: ...Page 2 ...
Page 4: ...Page 3 ...
Page 5: ...Page 4 ...
Page 25: ...Page 24 Drawing 1 ...
Page 27: ...Page 26 Drawing 2 ...
Page 29: ...Page 28 Drawing 3 ...
Page 31: ...Page 30 Drawing 4 ...
Page 33: ...Page 32 Drawing 5 ...
Page 35: ...Page 34 Drawing 6 ...
Page 37: ...Page 36 Note for Hydraulic Brakes see Appendix B Drawing 7 ...
Page 39: ...Page 38 Drawing 8 ...
Page 41: ...Page 40 Drawing 9 ...
Page 43: ...Page 42 Drawing 10 ...
Page 45: ...Page 44 Drawing 11 ...
Page 47: ...Page 46 Drawings 12A 12B ...
Page 49: ...Page 48 Drawing 13 ...
Page 51: ...Page 50 Drawing 14 ...
Page 53: ...Page 52 Drawing 15 ...
Page 55: ...Page 54 Drawing 16 ...
Page 57: ...Page 56 Drawing 17 ...
Page 59: ...Page 58 Drawing 18 ...
Page 61: ...Page 60 Drawing 19 ...
Page 63: ...Page 62 Drawing 20 ...
Page 65: ...Page 64 Drawing 21 ...
Page 67: ...Page 66 Drawing 22 ...
Page 69: ...Page 68 Drawing 23 ...
Page 71: ...Page 70 Drawing 24 ...
Page 73: ...Page 72 Drawing 25 ...
Page 75: ...Page 74 Drawing 26 ...
Page 77: ...Page 76 Drawing 27 ...
Page 79: ...Page 78 Wiring1 jpg Drawing 28a ...
Page 80: ...Page 79 Wiring2 jpg Drawing 28b ...
Page 81: ...Page 80 elecLights jpg Drawing 28c ...
Page 83: ...Page 82 Drawing 29 ...
Page 85: ...Page 84 Drawing 30 ...
Page 92: ...Page 91 Appendix B Brakes Manual for BX1320 BX1000 Appendix B Page 1 ...
Page 93: ...Page 92 Appendix B Page 2 ...
Page 94: ...Page 93 Appendix B Page 3 ...
Page 96: ...Page 95 Appendix B Page 5 ...
Page 97: ...Page 96 Appendix B Page 6 ...
Page 98: ...Page 97 Appendix B Page 7 ...
Page 104: ...Page 103 Figure 1a Description of Display Pages ...
Page 105: ...Page 104 Figure 1b Description of Display Pages ...
Page 138: ...Page 137 Appendix C EIS 4000 912 914 ...
Page 139: ...Page 138 Appendix C EIS 4000 912 914 ...
Page 140: ...Page 139 Appendix C EIS 4000 912 914 ...
Page 141: ...Page 140 Appendix C EIS 4000 912 914 End Appendix C ...
Page 155: ...Page 154 Appendix E2 Powerfin Prop Page 2 ...
Page 156: ...Page 155 Appendix E2 Powerfin Prop Page 3 ...
Page 157: ...Page 156 Appendix E2 Powerfin Prop Page 4 ...
Page 158: ...Page 157 Appendix E2 Powerfin Prop Page 5 ...
Page 159: ...Page 158 Appendix E2 Powerfin Prop Page 6 ...
Page 160: ...Page 159 Appendix E2 Powerfin Prop Page 7 ...
Page 161: ...Page 160 Appendix E2 Powerfin Prop Page 8 ...
Page 162: ...Page 161 Appendix E2 Powerfin Prop Page 9 ...
Page 163: ...Page 162 Appendix E2 Powerfin Prop Page 10 ...
Page 164: ...Page 163 Appendix E2 Powerfin Prop Page 11 End of Appendix E2 ...
Page 187: ...Page 186 By Memphis Soaring FIGURE 3 Common Signals ...