Observator Instruments OMC-183-ML Installation & Technical User Manual page 16

Signal conditioning unit
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Command 7:
Certain parameters are needed in order to calculate the QNH and QFH pressure
and to set the status settings as explained in chapter 3.3.
Calculation Settings
0: Barometer height above runway (m):
1: Runway elevation above sea level (m):
2: Lower threshold barometric pressure (mB):
3: Upper threshold barometric pressure (mB):
4: Maximum deviation barometric pressure (mB): 0.50
5: Wind sensor offset on NMEA1 IN:
6: Wind sensor offset on NMEA2 IN:
Q: return
It's possible to change the baud rate of the serial inputs and outputs. These
Command 8:
settings will only be active after twice the "Q" command and the 'Save and exit menu'.
Configure Baud rate (save & reboot after change)
0: NMEA INPUT (baud):
1: NMEA OUTPUT (baud):
2: RS-232 OUTPUT (baud):
Q: return
Note:
When you change RS-232 baud rates, change your terminal settings as well,
change is effective once you leave the menu.
It's possible to use the RS232 as OMC-2900 output as well. Command 9
Command 9:
enables/disables the OMC-2900 over RS-232.
Command A-D:
A-D. The represented inputs are located on the extension board, therefore they need calibration
after the assembly line. Please make sure calibrated equipment is used to present the right
current or voltage.
If the presented values are way of the expected values the old values of calibration will remain.
Connect 0 mA reference, then press ENTER
Connect 24 mA reference, then press ENTER
Connect 0 Volt reference, then press ENTER
Connect 5 Volt reference, then press ENTER
OMC-183-ML Manual
0.00
0.00
4800
4800
115200
(re)Calibration of the analog inputs can be done by using the commands
-5.00
10.00
975.00
1050.00
OR
Page 16

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