3300-10

The Model 3300 Directional Gyro (DG) is a gyroscopic directional indicator. This short-term directional reference is used in conjunction with a magnetic compass. The directional gyro excels in providing a direction indication during maneuvers when the magnetic compass develops errors.Physical Characteristics:
Qualification: FAA TSO-C5e
Environmental Qualification: RTCA DO-160E Environmental Category
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Weight: 3300-10: 1.9 lbs
3300-11: 2.0 lbs
Dimensions: Length behind panel (not including connector) 4.65 inches long maximum.
3.28 inches high maximum.
3.28 inches wide maximum.
Mating Connector: MS3116F8-4S or equivalent (MCI P/N 9015514)
Cover Glass HEA (anti-reflective) coated
Instrument Mounting: Rear panel mount
Performance:
Reliability 2500 Hour Mean Time Between Failure (MTBF)
Caging and Heading Set Knob The "PUSH" knob will erect the gyroscope to case horizontal and
engage the gear mechanism to set the heading position.
Drift Rate When the gyro is mounted to a rotating scorsby test stand tilted
to 3-degrees and set at 5 to 7 oscillations per minute the drift
shall be less than 4° in 10 minutes.
Warning Flag A gyro warning circuit provides for continuous monitoring of input
voltage and rotor speed. If either of these is insufficient, the red
warning flag will appear. In 3300-11, the dial lighting will turn off.
Operating Angle Limit Heading: No Limit (360°)
Pitch and Roll: 55° (all headings)
Lighting (3300-11 only) Internal white LED with backlit dial. Lighting control voltage is
user selectable for 5, 14 or 28VDC and has adjustable brightness.
Power Rating:
Starting Will not exceed 1.4A at 14 VDC.
Will not exceed 0.6A at 28 VDC.
Running 0.37-0.51 at 14 VDC.
0.18-0.25 at 28 VDC.

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