Honeywell KMA28 operation manual Bendix/King, Tso Compliance, Audio Selector Specifications

Bendix/King

KMA28

Audio Amplifier/Intercom/Marker Beacon Receiver

1.5 SPECIFICATIONS

TSO COMPLIANCE
Marker Beacon:	C35d, Class A
Audio Selector/Intercom:	C50c, Class A
APPLICABLE DOCUMENTS:	RTCA/DO-214
	RTCA/DO-143
	RTCA/DO-160C
	RTCA/DO-178B
ENVIRONMENTAL Qualifications:	A1D1/CA(MN)XXXXXXBBBBTBKXX
Temperature Range:
Operating:	-15º C to +55ºC
Storage:	-55º C to +85ºC
Altitude:	Up to 50,000 feet in an non-pressurized area of
	the cockpit.
DIMENSIONS:	Height: 1.3 in. (3.3 cm) Width: 6.25 in. (16.9 cm)
	Depth: 6.8 in. (17.3 cm)
WEIGHT (With Rack & Connectors):	1.5 lb. (0.54 kg)
POWER REQUIREMENTS	(Including Internal Lighting):
Voltage:	11 to 33 VDC
Maximum Current:	2.5 Amp (Externally protected by a 3 Amp circuit
	breaker.)
Typical operating current:
Speaker off:	350 mA
Speaker on, 28V, full radio volume	1.5 A
Audio Selector Specifications
Audio selector panel input impedance:	510 Ω
Input Isolation:	-60 dB (min.)
Speaker Muting:	-60 dB (min.)
Speaker Output (into 4 Ω ) with no clipping	3 Watts (min.)
14 VDC:
28 VDC:	10 Watts (min.)
Receiver Inputs:	9
	(Com 1, Com 2, Com 3, Nav 1, Nav 2, ADF,
	DME, MKR, AUX)
Unswitched Inputs:	2
	(examples: GPS WPT, Value, Autopilot Discon-
	nect, Altimeter DH)
Transmitter Selections:	6
	(Com 1, Com 2, Com 3
	Com1/2, Com2/1, Telephone)
Speaker Impedance:	4 Ω
Headphone Impedance:	150 - 1000 Ω
Headphone Output:	38 mW each headset, no clipping <1% THD
	70 mW each headset with < 10% THD into 150Ω
Microphone Impedance:	150 - 600 Ω

006-10565-0000 Page 1-3 Rev. 0, Sept. 2000