background image

 

 

 

 

Copyright 2009 

 
 

Installation and Operation Manual 

 

ERU50-001  

Emergency Relay Unit  

 
 

 

 

 

SM83-ERU50-804-0 

 
 

ISSUE 1.01 

 
 

IMPORTANT NOTICE 

Chelton Avionics Inc. doing business as Wulfsberg Electronics 
Division  is  responsible  for  full  distribution  and  revisions  of 
ICA's (Instructions for Continued Airworthiness). 
 
For inquiries regarding the content and currency of this 
manual contact Wulfsberg Electronics Division, 6400 
Wilkinson Drive, Prescott, Arizona, 86301.  Telephone (928) 
756-1615 or refer to the following website:  

www.wulfsberg.com

 for more information. 

 

SEALED 

2012.11
.19 
17:46:3
2 -08'00'

Summary of Contents for ERU50-001

Page 1: ...Division is responsible for full distribution and revisions of ICA s Instructions for Continued Airworthiness For inquiries regarding the content and currency of this manual contact Wulfsberg Electron...

Page 2: ...us of each section is controlled by revision shown in the footer of each page All revisions affecting sections of this manual have been incorporated into the latest issue ISSUE REVISION RECORD Manual...

Page 3: ...l Specifications 1 3 1 4 3 Environmental Specifications 1 3 2 Installation 2 1 Introduction 2 1 2 2 Unpacking and Inspection 2 1 2 2 1 Warranty 2 1 2 3 Airworthiness Limitations 2 1 2 4 Installation P...

Page 4: ...source audio in an aircraft It enables the transmission of microphone audio to a selected Transceiver and distributes all Inter Communication System ICS audio The ERU50 allows continued communication...

Page 5: ...1A maximum Intercommunication System Key Inputs Quantity 2 Maximum Current 1A maximum ERU Status Discrete Selection Quantity 1 Maximum Current 1A maximum AMU ACP 3 Power Quantity 1 Rated Input Level 3...

Page 6: ...67 3 mm maximum Width 4 54 in 115 3 mm maximum Weight 0 32 lbs 0 15 kg maximum Mounting Bulkhead Mount Four 10 32 screws Material and Finish Metal components are brushed aluminum with conversion coat...

Page 7: ...aterials and labour but is exclusive of any transport to deliver the defective unit to and from Cobham or its designated warranty repair center or any labour to remove or re install the defective unit...

Page 8: ...s Note that the hood is a clamshell hood and is installed after the wiring is complete Maintain wire segregation and route wiring in accordance with the original aircraft manufacturers Maintenance Ins...

Page 9: ...Key signals connected to USER 1 ACP3 is not powered USER 4 Mic Phone ICS Key and TX Key signals connected to USER 2 ACP4 is not powered ERU Status is LO GROUND N N B E N USER 3 Mic Phone ICS Key and T...

Page 10: ...TX KEY AMU ACP3 POWER AMU USER 3 MIC AMU USER 3 PHN AMU USER 3 ICS KEY AMU USER 3 TX KEY ERU STATUS IN To Alert ACP1 H S1 MIC X H S1 PHN X ACP1 ICS X ACP1 TX X ACP3 ACP3 POWER X H S3 MIC X H S3 PHN X...

Page 11: ...ration manual DevCs Device Configuration Programmer window showing Alert 1 2 5 Accessories Required But Not Supplied Installation kit p n ERU50 IKC crimp is required to complete the installation The k...

Page 12: ......

Page 13: ......

Page 14: ......

Page 15: ......

Page 16: ...functional and operational procedures for the ERU50 001 Emergency Relay Unit 3 2 General Information The ERU50 is an Emergency Relay Unit for use with the Cobham Digital Audio Communication System DAC...

Reviews: