Meriam M203 Altimeter Indicated Air Speed Tester - Manual (Page 26)

23
RE-CALIBRATION – 5 Point START
To begin the 5-point re-calibration procedure, turn the unit OFF and follow the
steps below.
Keystroke Display
1. Press and hold the
MIN/MAX key and turn the
unit on by pressing the
ON/OFF key. Top line reads “RE-CAL”.
Bottom line reads “EDIT”.
2. Press the up arrow key until
“START” is displayed on the
bottom line. Top line reads “RE-CAL”.
Bottom line reads “START”.
3. Press the PGRM key Top line reads “RE-CAL
Bottom line reads “1-POINT”.
4. Press the up arrow key until
“5-POINT” is displayed on the
bottom line. Top line reads “RE-CAL
START”.
Bottom line reads “5-POINT”.
5. Press the PGRM key Top line reads “POINT 1 –
ZERO:”
Bottom line displays live
applied pressure.
6. Vent P1 and P2 ports to
atmosphere and
simultaneously press the
MIN/MAX and HOLD keys,
then release. Unit takes new zero. Top line
reads “ POINT 1 - ZERO:”
Bottom line displays live
applied pressure. POINT 1
has been taken.
7. Press the right arrow key
while on the right most digit to
proceed. Top line reads “POINT 2 -
APPLY:”.
Bottom line displays the cal
point value to apply.
8. Apply the indicated
calibration point pressure
using external pressure
standards. After pressure is
stable, press the right arrow
key. Top line reads “POINT 3 -
APPLY:”.
Bottom line displays the cal
point value to apply.
9. Repeat step 8 for CAL
POINTS 4 and 5. Top line reads “POINT 4/5 -
APPLY”
Bottom line displays the cal
point value.
10. Use up or down arrow
keys to select NO or YES
when asked “Save?” the Re-
Calibration data Top line reads “SAVE?”.
Bottom line reads “NO” or
“YES”.