Black Box
RS-485, MD3317, ME840A-M
manual
Copyright 1997. Black Box Corporation. All rights reserved
Specifications
Install
Diagrams
Jumper Settings
Page 20
© Copyright 1997. Black Box Corporation. All rights reserved.
1000 Park Drive • Lawrence, PA
15055-1018
•
724-746-5500
• Fax
724-746-0746
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Page 20
Image 20
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Page 20
Contents
Short-Haul Modem-FSK RS-485 Modules
FCC Statement
Instrucciones DE Seguridad
Instrucciones DE Seguridad
Short Haul Modem SHM-FSK
Contents
Specifications
Data Transmission Speed Up to 9600 baud
SHM-FSK Remote Units part number ME840A-S
Introduction
SHM-FSK Master Units part number ME840A-M
Operating Mode
Diagrams
Pinout of the RS-232 Port
Typical Application Connections
Installation
Short Haul Modem SHM-FSK
Operation
Transmitter Output Level
Jumper Settings
DCE and DTE Settings
Receiver Gain
Carrier Detect
Chassis Ground
Half-Duplex Operation/Carrier Control
LED Indications
Marking Function
General Operating Notes
Tuned Circuits
Proper Operation
Loopback Test
RS-485 Interface
Copyright 1997. Black Box Corporation. All rights reserved
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