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A1000 and A2000 SERIES
CONVERTER BOXES
USERS MANUAL

R E V I S E D : 5 / 1 / 9 5

DGH CORPORATION
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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.

Summary of Contents for A1000 series

Page 1: ...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 m...

Page 2: ...nal handshaking signals from the host Therefore host software written for RS 232 may be used without modification RS 485 bus control is completely transparent to the user The A1000 and A2000 can also...

Page 3: ...ns 8 08 W x 2 50 H x 6 25 D A1000 7 06 W x 1 53 H x 5 30 D A2000 RS 485 Connectors Phoenix screw terminal barrier plug supplied Replace with Phoenix MSTB 2 5 4 ST 5 08 or equivalent Warranty 12 months...

Page 4: ...OUND 6 DSR DATA SET READY 7 NC NO CONNECTION 8 CTS CLEAR TO SEND 9 NC NO CONNECTION The RS 232 connector is left open when the A1000 or A2000 is used as an RS 485 Repeater The only connections normall...

Page 5: ...485 converter A1000 2000 RS 485 OUT CONNECTOR The A1000 and A2000 converters contain a four pin screw terminal plug labelled RS 485 OUT This connector is the RS 485 output for the A1000 and A2000 whe...

Page 6: ...e the 3 pin strip on the PC board directly behind the LEDs Lift the jumper bar from the pin strip and place it over the two pins located closest to LEDS OFF written on the PC board The POWER A1000 and...

Page 7: ...n of a RS 485 system The resistors are enabled or disabled via two 3 position DIP switches located on the A1000 rear panel One three position switch enables termination resistors for the RS 485 IN HOS...

Page 8: ...a resistor insert a jumper into the jack position adjacent to the resistor nomenclature written on the A2000 printed circuit board NOTE The RS 485 IN 1K and 1K jumpers should be installed when the A20...

Page 9: ...wiring diagrams for both the A1000 and A2000 used as RS 232 RS 85 converters and RS 485 repeaters Figure 4a Wiring diagram for RS 232 RS 485 converter with host DB 9 connector Figure 4a Wiring diagra...

Page 10: ...A1000 A2000 USERS MANUAL 10 Figure 4c Wiring diagram for RS 232 RS 485 converter and RS 485 repeater...

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