Model 240 Passenger Speaker Amplifier
SM240 Installation and Operation Manual
Section 1 Rev: 1.00
Issue 4
Page 1-3
ENG-FORM: 800-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
1.4.2 Physical
Specifications
Height: 1.90"
[48.26
mm]
Length:
7.80" [198.12 mm]
Width:
4.90" [124.46 mm]
Weight:
1.4 lbs. [0.635 kg]
1.4.3
Environmental Specifications
Temperature:
-55 to +70 degrees C.
Altitude:
up to 70,000 feet.
Qualification of the Model 240 Passenger Speaker Amplifier was completed in accordance with
DO-160 B Env. Cat. F2-BA[JLO]XXXXXXX[BZ]AAAAAL
Note:
Refer to Environmental Qualification Form located in Section 2 of this Manual for complete details
of the environmental categories.
1.4.4 Product
Approval
FAA: TSO – C50c (RTCA/DO-170 Class Ib)
1.5 Unit
Nomenclature
Model 240 Derivative Part Number Descriptions:
The following is a tabulation of all Derivative Part Numbers available for the Model 240 Passenger Speaker
Amplifier. A Model 240 with an associated Derivative Part Number is designated as a Model 240-xxx, where xxx
is the applicable three digit Derivative Part Number.
Derivative Part No. Description of Derivative
240-001
Physically and electrically identical to base Model 240 except for the following
changes:
Left and Right SPKR level shall be 3.3
±
6 Vrms.
Minimum RCVR volume shall be
≤
100mVrms.
The Cabin Call Left and Right SPKR levels shall be 8
±
2 Vpp.
The Seat Belt/No Smoking Chime Left and Right SPKR levels shall be 1.6
±
2 Vpp.
Right and Left SPKR crosstalk shall be
≤
7mVrms.
Right and Left SPKR noise shall be
≤
4mVrms.
240-002
Physically and electrically identical to the Base Model 240.
Section 1 ends
