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MD23-190 

 

User Guide 

Mid-Continent Instruments and Avionics 

User Guide UG190, Revision 2 

 

 

January , 2021 

Count-up Timer (T

When the Count-up Timer (also referred to as elapsed timer, stopwatch, or chronograph) is 
selected from the Lower Pane, the Lower Pane and Middle Pane will show HH:MM:SS. The 
user can START, STOP, and RESET the timer manually by scrolling to and selecting the 
desired action. If RESET is selected without first selecting STOP, the timer will reset to zero 
and continue counting. 

 

 

 

 

 

Count-up Timer 

 

(running) 

 

Count-down Timer (T

When the Count-down Timer is selected from the Lower Pane, the Lower Pane and Middle 
Pane will show HH:MM:SS. The user can SET, START, STOP, and RESET the timer 
manually by scrolling to and selecting the desired action. When SET is selected, turning the 
Control Knob changes the digits and pushing it sequences from hours to minutes to seconds. 
Once activated, when the timer reaches zero, it will begin counting up, show a plus (+) in 
front of the timer, and turn the digits yellow. If RESET is selected without first selecting 
STOP, the timer will reset to its original setting and continue counting. 

 

 

 

 

 

Count-down Timer 

Count-down Timer 

 

(during Setting) 

(count-up after timer reaches zero) 

 

 

 

Summary of Contents for MidContinent MD23-190

Page 1: ...ent regulatory requirements are qualified to install this equipment It is a supplement to the MD23 Installation Manual and Operating Instructions p n 9019161 If further information is required please...

Page 2: ...set of data is referred to as a Custom Instrument Definition or a CID file The CID file for this instrument is pre loaded and may be available for future updates via a standard USB flash drive through...

Page 3: ...tement of work and are not provided within this User Guide Connector Pinout Pin Description Function 1 Ground Power return connect to a c ground 2 ARINC Out A ARINC label 150 3 ARINC Out B paired with...

Page 4: ...t MANUAL to start and stop the Flight Timer manually o select EXTERNAL to start the timer on an open signal Timer stops when grounded Hobbs Timer Pre Set to coincide with the existing aircraft engine...

Page 5: ...the unit is initially powered on the Middle Pane is blank LOWER PANE The Lower Pane shows the current active value of all four timer functions and allows any of them to be selected for an expanded vie...

Page 6: ...OP and RESET the timer manually by scrolling to and selecting the desired action If RESET is selected without first selecting STOP the timer will reset to zero and continue counting When the Flight Ti...

Page 7: ...mer running Count down Timer T When the Count down Timer is selected from the Lower Pane the Lower Pane and Middle Pane will show HH MM SS The user can SET START STOP and RESET the timer manually by s...

Page 8: ...ARINC input T Count up Stopwatch function with manual start stop reset T Count down Count down timer from user set value with manual start stop reset counts up after reaching zero 4 1 3 USER OPTIONS...

Page 9: ...set to a different time than the GPS time even when GPS time is available In this case the time basis will continue to be synchronized but the manual UTC time will be stored and remembered as an offs...

Page 10: ...ser to choose whether the seconds HH MM SS are shown ON or not shown OFF on the main display for both the time UTC and LOCAL and the Flight Timer This feature is to reduce clutter or distraction per u...

Page 11: ...Hobbs timer if enabled via external signal 5 1 CONFORMANCE For standard conformance items such as qualification levels and software updates please refer to the IM 5 1 1 INSTRUCTIONS FOR CONTINUED AIR...

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