COBHAM 250 Installation And Operation Instruction Manual
  1. Manuals
  2. Brands
  3. COBHAM Manuals
  4. Amplifier
  5. Sailor 250 FleetBroadband
  6. Installation and operation instruction manual
COBHAM 250 Installation And Operation Instruction Manual

COBHAM 250 Installation And Operation Instruction Manual

Passenger speaker amplifier
Hide thumbs Also See for 250:
Table of Contents

Advertisement

Quick Links

Download this manual See also: User Manual, Installation Manual
250-16-1
DOCUMENT NUMBER
250
PASSENGER SPEAKER AMPLIFIER
INSTALLATION AND OPERATION MANUAL
REV "-" Sep 15, 2004
Cobham
6400 Wilkinson Drive
Prescott, AZ 86301-6164
(928) 708-1500
2011.08.16
SEALED
16:58:20
-07'00'
Amendment #3
Aug 9, 2011
CONFIDENTIAL AND PROPRIETARY TO COBHAM

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 250 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for COBHAM 250

Summary of Contents for COBHAM 250

  • Page 1 250-16-1 DOCUMENT NUMBER PASSENGER SPEAKER AMPLIFIER INSTALLATION AND OPERATION MANUAL REV "-" Sep 15, 2004 Cobham 6400 Wilkinson Drive Prescott, AZ 86301-6164 (928) 708-1500 2011.08.16 SEALED 16:58:20 -07'00' Amendment #3 Aug 9, 2011 CONFIDENTIAL AND PROPRIETARY TO COBHAM...
  • Page 2 250-16-1 Rev. - 250 Passenger Speaker Amplifier Installation and Operation Manual Cobham has acquired the assets of Nothern Airborne Technology Ltd. and dB Systems Inc., and has reissued this manual in its entirety Cobham will be responsible for all future amendments and revisions.
  • Page 3 250-16-1 Rev. - 250 Passenger Speaker Amplifier Installation and Operation Manual Periodically Cobham will release manual amendments. In order to maintain the most accurate and up to date manual these amendments should be carried out immediately upon receipt and recorded on the following amendment record.
  • Page 4 MANUAL AMENDMENT Manual: 250-16-1 Amendment #: 3 Document #: 250-16-1 809-0003 Amendment Date: Aug 8, 2011 The purpose of this amendment is to update the 250 outline drawing and MOD table per ECR11040. Amendment Instructions: Remove Pages Replace With Pages...
  • Page 5 MANUAL AMENDMENT Manual: 250-16-1 Amendment #: 2 Document #: Install_Ops\250\809-0002 Amendment Date: Oct 21, 2004 The purpose of this amendment is to update the 250 outline drawing. Amendment Instructions: Remove Pages Replace With Pages Title Page Amendment #1 Title Page Amendment #2...
  • Page 6 The purpose of this amendment is to update all applicable drawings. Amendment Instructions: Remove Pages Replace With Pages 250-16-1 Title Page Rev - SM250 Title Page Rev - Pages b – c Pages b – d Amendment #1 Page 7...
  • Page 7 EQUIPMENT MANUAL 250-16-1 REV - CHANGE RECORD DATE CHANGE APPROVAL 3-11-03 ORIGINAL DOCUMENT RELEASED 250/250-16-1 Page a...

  • Page 8: Table Of Contents

    Table 2 Environmental Qualification Form ..................13 Figures / Drawings Outline, Model 250-[ ], Passenger Speaker Amplifier (Rev 1.90) ........7 Figure 2 Model 250-[ ] Block Diagram....................8 Figure 3 Model 250-[ ] Wiring Diagram ....................10 Figure 4 Internal Trim Pot Adjustments....................13...
  • Page 9 No. 250-4, Acceptance Test Procedure. Table A describes those differences. NOTE: A Model 250 with an associated detail part number is designated as a Model 250-XXX, where XXX is the applicable detail part number. Table A. Detail Part Number Description...
  • Page 10 EQUIPMENT MANUAL 250-16-1 REV - 250-16-1 FIGURES This page lists the drawings necessary for complete maintenance and troubleshooting. The applicable serial numbers are shown in the right hand column. Previously only the most current revision of each figure was included in this manual.

  • Page 11: Operating Instructions And Equipment Limitations

    The chime and ringer tones do not pass through either of the electronic attenuators. Internal screwdriver potentiometer adjustments are accessible, after removal of the Model 250 end plate, to set the chime or ringer levels heard in the passenger speakers.
  • Page 12 EQUIPMENT MANUAL 250-16-1 The operating modes of the Model 250 are established when either a ground (low) signal or a 12 to 32 VDC (high) signals applied as listed below to the connector pin listed: Pin No. Control Identification Function...

  • Page 13: Specifications

    EQUIPMENT MANUAL 250-16-1 All internal screwdriver potentiometer adjustments of the Model 250 are set to factory standards. If it is necessary to change a setting, refer to the calibration and maintenance section of this manual. The amplifiers are adjusted for acceptable listening output levels into the proper loads with ADF receiver inputs of 7.75 V...
  • Page 14 EQUIPMENT MANUAL 250-16-1 RECEIVER VOLUME: Controls level of ADF, PSC and TV audio inputs to the Left and Right Speaker outputs. Range and control same as Paging Volume specification. OUTPUTS: RIGHT SPEAKER: The Right Speaker Amplifier is designed for speech and music signals.
  • Page 15 EQUIPMENT MANUAL 250-16-1 ISOLATION BETWEEN CHANNELS: 60 dB, Minimum. OUTPUT NOISE: Greater than 75 dB below rated, all outputs. POWER SUPPLY: 28 VDC, 5 ampere maximum. OPERATING TEMPERATURE: From -55 to +70°C. Thermal fold back of the speaker outputs occurs if the heatsink temperature reaches 105°C.

  • Page 16: Installation Procedures, Wiring Diagram, And Limitations

    INSTALLATION PROCEDURES, WIRING DIAGRAMS, AND LIMITATIONS PHYSICAL Installation dimensions are shown on the Model 250 outline on Figure 1. The amplifier may be mounted to a metal or plastic surface, but it is necessary to ground the case to the metal aircraft structure.
  • Page 17 Amendment #3 Page 7...

  • Page 18: Figure 2 Model 250-[ ] Block Diagram

    EQUIPMENT MANUAL 250-16-1 Figure 2. Block Diagram, Model 250-XXX Passenger Speaker Amplifier 250/250-16-1 Page 8...

  • Page 19: Table 1 Pin Identification

    EQUIPMENT MANUAL 250-16-1 The paging and receiver volume control pots required are linear taper, zero to 10,000 ohms, 1/2 watt or greater. Electrically, the pots are wired to provide maximum resistance to the Model 250 for full volume (fully clockwise rotation).

  • Page 20: Figure 3 Model 250-[ ] Wiring Diagram

    EQUIPMENT MANUAL 250-16-1 Figure 3. Wiring Diagram 250/250-16-1 Page 10...
  • Page 21 EQUIPMENT MANUAL 250-16-1 Figure 3. Wiring Diagram (continued) 250/250-16-1 Page 11...
  • Page 22 EQUIPMENT MANUAL 250-16-1 Figure 3. Wiring Diagram (continued) 250/250-16-1 Page 12...

  • Page 23: Figure 4 Internal Trim Pot Adjustments

    EQUIPMENT MANUAL 250-16-1 Figure 4. Internal Trim Pot Adjustments 250/250-16-1 Page 13...

  • Page 24: Table 2 Environmental Qualification Form

    EQUIPMENT MANUAL 250-16-1 Table 2. Environmental Qualification Form NOMENCLATURE: Passenger Speaker Amplifier TYPE/MODEL/PART NO.: Model 250-[ ] TSO NUMBER: TSO-C50c MANUFACTURER'S SPECIFICATION AND/OR OTHER APPLICABLE SPECIFICATION: dB Systems Document No. 250-16-1, Equipment Manual MANUFACTURER: dB Systems, Inc. ADDRESS: 2847 152nd Ave. N.E., Redmond, WA 98052...
  • Page 25 Other Tests: Acceptance tests in accordance with dB Systems’ Acceptance Test Procedures 250-4 and performance tests in accordance with RTCA Document DO-214, Section 2.8 were conducted on the Model 250 qualification test unit during and/or after each environmental test, as appropriate. Remarks: •...

Table of Contents