Garmin GNS 530 Installation Manual - page 4
500 SERIES INSTALLATION MANUAL
Page 1-3
190-00181-02
Rev
S
1.3.3 GPS
Specifications
Regulatory Compliance
TSO C129a Class A(1), RTCA DO-208, JTSO C129a
Regulatory Compliance
(TAWS units only)
ETSO C129a
Acquisition Time
a) Search-the-Sky (without almanac, without initial position or
time): 5 minutes
b) AutoLocate™ (with almanac, without initial position or time): 5
minutes
c) Cold Start (position known to 300 nm, time known to 10
minutes, with valid almanac): 45 seconds
d) Warm Start (position known to 10 nm, time known to 10
minutes, with valid almanac and ephemeris): 15 seconds
Max Velocity
1000 kts.
Dynamics
6 g
Antenna power supply
20 mA typical, 40 mA max at 4.6 VDC
1.3.4
COM Transceiver Specifications (GNS 530 Only) **
Regulatory Compliance
TSO-C37d Class 4 & 6* (3 & 5 for “A” models),TSO-C38d Class C &
E, JTSO-2C37e, JTSO-2C38e, RTCA DO-186a
ICAO Annex 10 Volume III (Part II – Voice Communications
Systems) Par. 2.3.3
Regulatory Compliance
(TAWS units only)
ETSO-2C37e, ETSO-2C38e
Audio Output
100 mW minimum into a 500
Ω load.
Audio Response
Less than 6 dB of Variation between 350 and 2500 Hz.
Audio Distortion
The distortion in the receiver audio output shall not exceed 15% at all
levels up to 100 mW.
AGC Characteristics
The audio output shall not vary by more than 6 dB when the level of
the RF input signal, modulated 30% at 1000 Hz, is varied from 5
μV
to 450,000
μV.
Sensitivity
(S+N)/N on all channels shall be greater than 6 dB when the RF level
is 2
μV (hard) modulated 30% at 1000 Hz at rated audio.
Squelch
2
μv ±6 dB for 25 kHz channels.
3
μv ±6 dB for 8.33 kHz channels.
Selectivity
6 dB BW is greater than
±8 kHz for 25 kHz channeling.
60 dB BW is less than ±25 kHz for 25 kHz channeling.
6 dB BW is greater than ±2.778 kHz for 8.33 kHz channeling.
60 dB BW is less than ±7.37 kHz for 8.33 kHz channeling.
Spurious Response
Greater than 85 dB.
Transmitter Power
At Least 10 Watts*, 16 watts for “A” models.
Transmitter Duty Cycle
Recommended 10% maximum.
Modulation Capability
The modulation shall not be less than 70% and not greater than 98%
with a standard modulator signal applied to the transmitter.
Carrier Noise Level
Shall be at least 45 dB (S+N)/N.
Frequency Stability
0.0005%
Demodulated Audio
Distortion
Less than 10% distortion when the transmitter is modulated at least
70%.
Sidetone
1.4 V
RMS
into a 500
Ω load when the transmitter is modulated at least
70%.
Demodulated Audio
Response
Shall be less than 6 dB when the audio input frequency is varied from
350 to 2500 Hz.
* C37d Class 4 & 6 may not provide suitable COM transmit range for some high-altitude aircraft.
** Specifications shown apply at nominal input voltages of 13.75 Vdc or 27.5 Vdc, as applicable, and with a nominal
50 ohm resistive load at the antenna connector.