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DIN-191 and DIN-192 SERIES
CONVERTER BOXES
USERS MANUAL
R E V I S E D : 1 0 - 3 0 - 0 0
DGH CORPORATION
P O B O X 5 6 3 8
MANCHESTER, NH 03108
T E L E P H O N E : 6 0 3 - 6 2 2 - 0 4 5 2
F A X : 6 0 3 - 6 2 2 - 0 4 8 7
WEB: www.dghcorp.com
The information in this publication has been carefully checked and is
believed to be accurate; however, no responsibility is assumed for
possible inaccuracies or omissions. Applications information in this
manual is intended as suggestions for possible use of the products and
not as explicit performance in a specific application. Specifications may be
subject to change without notice.
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Table of Contents
Summary of Contents for DGH DIN-191 Series
- Page 1 CONVERTER BOXES USERS MANUAL R E V I S E D : 1 0 - 3 0 - 0 0 DGH CORPORATION P O B O X 5 6 3 8 MANCHESTER, NH 03108 T E L E P H O N E : 6 0 3 - 6 2 2 - 0 4 5 2 F A X : 6 0 3 - 6 2 2 - 0 4 8 7 WEB: www.dghcorp.com...
- Page 2 DIN-191 & DIN-192 USERS MANUAL 2 WARRANTY DGH warrants each DIN-191 and DIN-192 series module to be free from defects in materials and workmanship under normal conditions of use and service and will replace any component found to be defective, on its return to DGH, transportation charges prepaid within one year of its original purchase.
- Page 3 3 DIN-191 & DIN-192 USERS MANUAL GENERAL DESCRIPTION The DIN-191 and DIN-192 series converter boxes convert RS-232 communications signal levels to the correct electrical signals required by RS-485. The RS-485 communications standard is recommended when many modules, or other addressable devices, must be connected to a host computer over long distances.
- Page 4 DIN-191 & DIN-192 USERS MANUAL 4 SPECIFICATIONS Max common mode voltage: 500Vrms, 60s duration. Baud rates: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 (Dip -switch selectable). Temperature range (operating & storage): -25 to +70°C. Relative humidity: 0 - 95% noncondensing. Warranty: 12 months on workmanship and materials.
- Page 5 5 DIN-191 & DIN-192 USERS MANUAL The DIN-191 female RS-232 connector utilizes five connections: Transmit pin 2 Receive pin 3. Ground pin 5. Data Set Ready (DSR) pin 6 Clear To Send (CTS) pin 8 Both the Data Set Ready (DSR) input pin #6 and Clear To Send (CTS) input pin #8 are internally biased to their active state thru a 330Ω...
- Page 6 DIN-191 & DIN-192 USERS MANUAL 6 isolated RS-485 input data lines will be re-amplified and retransmitted on the RS-485 OUT data lines. RS-485 Output RS-485 Input Figure 1B Connections for DIN-192. BAUD RATE The DIN-191 and DIN-192 series converters contain a 10-position DIP switch located on the bottom of each unit.
- Page 7 7 DIN-191 & DIN-192 USERS MANUAL Figure 2. RS-485 biasing & termination resistors. RS-485 TERMINATION & BIASING SETTINGS Proper termination and biasing of any RS-485 based system can be performed by properly enabling the correct resistors inside each DIN-191 or DIN-192. Figures 3.0 and 4.0 show the location of the jumpers on the printed circuit board.
- Page 8 DIN-191 & DIN-192 USERS MANUAL 8 FIGURE 4. DIN-192 jumper locations. FACTORY RS-485 TERMINATION SETTINGS Each DIN-191 and DIN-192 contains internal pin strips for enabling the internal termination and biasing resistors. Each pc board is clearly marked with the jumper designators adjacent to each row of pins. The jumper designators are +1K, 220 and -1K.
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