Garmin GTR 200, Installation Manual

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190-01553-00 GTR 200 Installation Manual
Rev. B Page 1-3
1.3.3 Display
The display on the GTR is a sunlight readable LCD display.
1.3.4 COM Specifications
The GTR 200 transmitter meets the requirements of RTCA DO-186B section 2.3 for a class 4 transmitter.
Table 1-4 Display Specifications
Characteristics Specifications
Display Size
Width: 3.46” (88.0mm)
Height: 0.843” (21.4mm)
Active Area
Width: 2.95” (74.98mm)
Height: 0.486” (12.36mm)
Resolution 200 x 33 pixels
Viewing Angle
Left: 45

Right: 45°
Up: 10

Down: 30

Table 1-5 COM Transmitter Specifications
Characteristics Specifications
Microphone Input
Two inputs, standard carbon or dynamic mic with integrated
preamp. The GTR 200 provides a 150
Ω AC input impedance and
supplies the microphone with an 11 V bias through 470 Ω +/- 5%.
Modulation Capability
85% with 150 to 1500 mVRMS microphone input at 1000 Hz.
Range can be extended from 20 mVrms to 2500 mVrms with mic
gain adjustment.
Modulation
AM Double sided Emission Designator:
6K00A3E (118 - 136.975 MHz)
Frequency Range 118.000 to 136.975 MHz, 25 kHz channel spacing
Frequency Tolerance +/-5 ppm from -20°C to +55°C
Output Power 10 Watts carrier minimum
Duty Cycle 20%
Carrier Noise Level At least 35 dB (SNR).
Stuck Mic Time-Out 35 seconds time-out, reverts to receive
Demodulated Audio Distortion
Less than 25% distortion when the transmitter is at 85% modulation
at 350 to 2500 Hz