Midcontinent MD23-342 - Technical Specifications

Manual Number 9019161 Revision C, August 18, 2023 6
TECHNICAL SPECIFICATIONS
Electrical Attributes
Input Voltage 10-32 VDC
Input Power 4 watts (0.14A @ 28VDC)
Lighting Input 5, 14, or 28VDC or automatic photocell control
Battery Backup (clock function only) Rechargeable coin cell (qty 1)
Table 1.1
Data Inputs and Outputs*
Analog Input (-1, -2)
Input (-3)
Output (-1, -2)
Output (-3)
0V to 28VDC, ±0.050V accuracy, impedance >50Kohms
-24V to 29VDC, ±0.050V accuracy, impedance >50Kohms
0V to 5VDC, ±0.050V accuracy,
-8V to 8VDC, ±0.050V accuracy,
Discrete Input
Output
Sensing of open or ground
Open, Ground, Pullup to 5V
Frequency Input (-1) 0.5-100VDC pk-pk, input impedance >50K ohms
10-20,000 Hz (3 input pairs; differential or single-ended)
ARINC 429 Input
Output
Low/High Speed input; 2 input channels
Low/High Speed output; 1 output channel
RS-232 Format per CID; 1 receive, 1 transmit
RS-422/485 (-3) Format per CID; 2 channels / 4 wires, bidirectional
Thermocouple (-1, -2) 1 pair; cannot be grounded
Pressure Static (-2)
Pitot (-2)
0-15 psi absolute (TSO accurate -1,500 to +55,000 feet)
±15 psi differential (TSO accurate 20 to 500 knots)
Table 1.2
Available Features by Unit Version* -1 -21 -2 -22 -3 -23
Standard Display
  
NVIS Display
  
Analog / Discrete Multi-IO
     
ARINC 429
     
RS-232
     
RS-422 / RS-485
 
Pneumatic Inputs
 
Frequency / Tachometer Inputs
 
Inertial Sensors
 
Thermocouple Input
   
External Dimming Input
     
Table 1.3
* NOTE: All references to -X throughout the document also apply to -2X respectively. -2X versions
represent the NVIS display version of the respective -X version and are otherwise identical.