J.P. Instruments EDM 700/800/711 Pilots Guide - Manual (Page 39)

For Your Safe Flight Page 35
Section 8 - Programming the EDM-800 Horsepower Constant
You must adjust the HP Constant once for your aircraft. The default
display will be RPM if Fuel Flow is not operational or you can adjust the
display to show RPM instead of HP. Before takeoff, put the EDM in the
HP Constant mode. Enter the pilot program mode by simultaneously
holding the STEP and LF buttons until the display changes, about 5
seconds.
1. Tap STEP about 4 times until you see
HP-? Y. If you see HP-? N,
change the N to a Y by tapping the LF button, then hold both the
STEP and LF buttons display until you see
HPC= I20. Change the
number 120 by tapping or holding the LF button. Note that the %HP
number in the display will change as you change the constant.
2. Referring to the Aircraft Flight Manual (AFM) set the engine to a
constant power setting of 70% , Rich of peak and maintain straight
and level flight at any altitude below 10,000 feet. View the reading
in the %HP display and see how close it is to your current engine
percent HP. If the value in the display not at your current engine
percent HP setting, then change the HP reading by adjusting the HP
constant in the lower display by holding or tapping the LF button.
Note: the reading is the percent of maximum HP, not total HP.
3. Keep adjusting the HP constant until the upper window displays the
same power level as the current engine percent HP.
4. Tap the STEP button to exit.
Section 9 - Programming Manifold Pressure (MAP)
Do this one time and only if the MAP on your manifold pressure
gauge doesn't match the MAP shown on the EDM-800.
1. Do this on the ground with the engine turned off.
2. Enter the pilot program mode by simultaneously holding the STEP
and LF buttons for five seconds.
3. Tap STEP to index to HP-? Y.
4. Hold both the STEP and LF buttons and you will see HPC= I25.
5. Hold both the STEP and LF buttons and you will see
MAP= 0
6. Use one of the following two methods to calibrate the MAP.