Honeywell International Inc. RTA-50D Manuale Utente

MAINTENANCE MANUAL

965-1696

DESCRIPTION AND OPERATION

Description (TASK 23-20-59-870-801-A01)

General (Subtask 23-20-59-870-001-A01)

(1)

This section contains a description of the RTA-50D VDR and lists other components required
for system operation.

(2)

Refer to Table 1 for the leading particulars.

Table 1. Leading Particulars

Characteristic

Specification

Weight

9.0 pounds (4.1 kg)

Length

12.72 to 12.80 inches (323.1 to 325.1 mm)

Width

3.58 inches (90.9 mm)

Height

7.88 inches (200 mm)

Power:

• Receive

20 to 32 VDC 1.5 AMP MAX

• Transmit

8.0 AMP MAX

Frequency range

118.000 to 136.975 MHz

Frequency control

Dual ARINC 429 (serial digital) low-speed (13 kbps)
inputs

Channel spacing:

• All modes

25 kHz

• DSB-AM voice only

8.33 kHz

Cooling

Forced air in accordance with ARINC Specification
600

Transmitter (DSB-AM voice and data)

Output power

25 watts (nominal)

Output impedance

50 ohm

Frequency stability

±0.0005%

Voice modulation level

90% MIN modulation for an input level of 0.25 Vrms
at 1,000 Hz

Voice audio distortion

6% MAX for 30% modulation and 10% MAX for 90%
modulation with a 0.5-volt input and a modulating
frequency from 300 to 2,500 Hz

Voice audio frequency response

Flat within 6 dB from 300 to 2,500 Hz

Spurious radiation

118 dB MIN below desired carrier level

Harmonic radiation

60 dB MIN below desired carrier level

EFFECTIVITY

ALL

23-20-59

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1 Mar 2011