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I. 

Introduction and Overview 

 
The AMD-3700 Telephonic Stethoscope provides high quality remote auscultation with 
a number of valuable and unique features. 
 

  Low bandwidth while achieving quality auscultation.  The AMD-3700 connects to 

the system Data Channel via an RS232 interface operating at 19.2 Kb/s. 

  Same model can be configured for Transmit operation or Receive operation. 

  Plugging in the Chest Piece Assembly automatically puts the unit into Transmit 

Mode and illuminates the TX Mode light. 

  In Transmit Mode, the same auscultation sounds that are sent to the remote 

AMD-3700 unit are also presented at the Headset jack for local monitoring. 

  Leaving the Chest Piece input jack empty automatically puts the unit into Receive 

Mode and illuminates the RX light. 

  Volume control for adjusting the sound level delivered to the Headset jack.  The 

Volume control works in Receive Mode for sounds received from a remote AMD-
3700 unit or in Transmit Mode for monitoring sounds generated from the Chest 
Piece Assembly plugged into that local unit. 

  B/D Switch for an enhanced Bell/Diaphragm selection.  The Bell (B) position cuts 

off the high end at 250 Hz and boosts the low frequencies below 100 Hz for 
enhanced heart auscultation.  The Diaphragm (D) position slightly reduces the 
very low frequency sounds and extends the high frequencies to 1,400 Hz.  The 
B/D Switch works in Receive Mode for sounds received from a remote AMD-
3700 unit or in Transmit Mode for monitoring sounds generated from the Chest 
Piece Assembly plugged into that local unit. 

 
The AMD-3700 Telephonic Stethoscope is for prescription use by medical care 
professionals. 
 

II. Installation 

 
Installing the AMD-3700 Telephonic Stethoscope is as easy as applying power and 
connecting the unit to a functional Data Channel. 
 

A. Power 

 
Power is provided to the AMD-3700 unit from a small, wall mount Power Supply.  Plug 
the Power Supply into a 115 vac wall outlet and insert the plug at the end of the power 
cable into the jack at the left rear of the AMD-3700 unit. 
 
If there is no Chest Piece Assembly plugged into the unit, the RX Mode light will be lit 
and the TX Mode light will be OFF.  If a Chest Piece Assembly is plugged into the unit, 
then the TX Mode light will be lit and the RX Mode light will be OFF. 
 

AMD Global Telemedicine, Inc. 

73 Princeton Street   North Chelmsford, MA 01863 

978-937-9021 (phone)   978-937-5249 (fax) 

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Summary of Contents for AMD-3700

Page 1: ...D Global Telemedicine Inc 73 Princeton Street North Chelmsford MA 01863 978 937 9021 phone 978 937 5249 fax AMD Global Telemedicine Inc Installation and Operation Manual AMD 3700 Telephonic Stethoscop...

Page 2: ...flammable anesthetic mixture with air or with continuous oxygen or nitrous oxide This product complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device...

Page 3: ...lection The Bell B position cuts off the high end at 250 Hz and boosts the low frequencies below 100 Hz for enhanced heart auscultation The Diaphragm D position slightly reduces the very low frequency...

Page 4: ...B 9 straight through cable should be used Sometimes DCE equipment will have a DB 25 connector for its interface In that case a DB 9 to DB 25 adapter may be used or a cable with a female DB 9 connector...

Page 5: ...signals and sent out over the RS232 data interface In addition to transmitting the digital signals the auscultation sounds from the Chest Piece are looped back and presented at the local Headset jack...

Page 6: ...used in an auscultation exam similarly to a traditional stethoscope The Bell B position cuts off the high end at 250 Hz and boosts the low frequency sounds below 100 Hz for enhanced heart auscultation...

Page 7: ...placement The Chest Piece is plugged in the TX Mode light is lit but there is no sound heard in the local Headset The Chest Piece Assembly is not plugged in all the way Make sure Chest Piece Assembly...

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