The MID CONTINENT® INSTRUMENT (MCI) MD–90 Series Precision Quartz Clocks provide an ideal solution for accurate time-keeping, and consist original equipment for many major aircraft manufacturers. Designed for accurancy, the 2-inch MD–90 Series clocks are manufactured to meet rugged aircraft environmental standards, they are FAA/PMA certified and offered in standard MD–90–1 and MD–90L versions, both operating with 8–32 VDC power input. Their key features include:
Precision quartz movement
Compact 2-inch size — fit standard panel cutout
Lighted version available with field-replaceable light tray
Transient and reverse polarity protection
Extremely low current consumption (3 mA)
Continuously powered by aircraft battery
FAA PMA certified
Designed and built in the USA
One-year limited warranty
Product Specifications:
Power Input: 8–32 VDC - 3 mA max (without lighting)
Accuracy: ±30 seconds in 24 hrs
Dimensions: 2.5 x 2.5 x 3.2 inches max
Weight: 0.5 lbs
Temperature: –40°C to +82°C (–40°F to +180°F)
Altitude: –1,000 to +55,000 feet
Humidity: 0 to 95% at 25°C
Vibration: .02 in. dbl. ampl., 1.5g @ 5 to 50 Hz
Mounting: Front or rear panel mounted
Connector: #6-32 threaded terminals
For additional information please consult the supplied documentation.