J.P. Instruments EDM 900 Pilots Guide - Manual (Page 41)

For Your Safe Flight Page 41
Section 10 - Adjusting Manifold Pressure & %HP
Adjusting the HP Constant for Rich of Peak Operation
To fine tune the %HP readout, follow this procedure airborne between
5,000 and 8,000 feet MSL. (note: Verify that the MAP adjustment has
been perform prior to this process).
1. Enter the pilot program mode by simultaneously holding the STEP
and LF buttons for five seconds.
2. Tap STEP repeatedly until you see HP Constants. Hold both NEXT
and Button 2 until you see ROP and LOP appear in status bar. Tap
ROP. Now HP Constant 125 should appear. Hold both NEXT and
Button 2 until you see ADJUST momentarily. Adjustment range for
the HP Constant is 45 to 180.
3. Set the MP and RPM per your POH to 70 percent power. Let
conditions stabilize.
4. Adjust the HP Constant value PLUS or MINUS so that the %HP
reading on the display equals ‘70 %HP’. Note: this is the percent of
maximum horsepower.
5. Hold both NEXT and Button 2 until you see SET.
Adjusting the MAP
This procedure allows you to adjust the MAP to the altimeter setting at a
sea level airport. NOTE: If airport is not at sea level, use the
correction table to derive corrected sea level altimeter setting).
1. Enter the pilot program mode by simultaneously holding the STEP and
LF buttons for five seconds.
2. Tap NEXT repeatedly until you see MAP ADJUSTMENT +0.0. Then
hold both the NEXT and Button 2 until you see ADJUST
momentarily.
3. Adjust the value using the PLUS or MINUS until the value equals the
altimeter setting (sea level airport). The adjustment range for the
MAP is ±3.0 inHg.
4. Hold both NEXT and Button 2 until you see SET.