TMA44 Audio Panel Installation Manual
7 November 2017
01849-00 Issue
AB
______________________
Trig Avionics Limited
3
3. Technical Specifications
Specification
Characteristics
Compliance
Marker Beacon: TSO C35d, Class A, ETSO
2C35d
Audio Selector/Intercom: TSO C50d, Class A,
ETSO C50c
Applicable documents
RTCA DO-160B, RTCA DO-170 and RTCA
DO-143
Power Requirements
Voltage: 14 or 28 VDC*
Maximum current 1 amp (externally protected
by a 2 amp circuit breaker). Typical operating
current 350 mA (speaker off), 600 mA
(speaker on).
*28 VDC requires 15W dropping resistor
(included)
Altitude
Up to 50,000 feet in a non-pressurised area of
the cockpit
Operating Temperature
-20°C to +55°C
Storage Temperature
-40°C to +85°C
Input impedance
510
Input Isolation
-70 dB (min.)
Speaker Muting
-60 dB (min.)
Speaker Output (into 4
)
3 watts (min.) with no clipping
Switched Receiver Inputs
8 (Com 1, Com 2, Nav 1, Nav 2, ADF, DME,
MKR, AUX)
Unswitched Inputs
2
Transmitter Selections
3; Com 1, Com 2, Com 1/2