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   A1000 &  A2000 USERS MANUAL

SPECIFICATIONS
Max Common Mode Voltage: 1500Vrms, 1 minute duration.
NRZ asynchronous data format; 1 start bit, 7 data bits, 1 parity bit and 1
stop bit.
Baud Rates: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600,
115200.
Temperature Range: Operating and Storage: -25 to +70°C Ambient.
Relative Humidity: 0 - 95% Noncondensing.
A1000 Power Specifications
Power Requirements: 115 or 230 Vac ±10%, 50-60 Hz.
Power Consumption: 30W Full Load.
Power Supply Output: +24Vdc @ 1A.
A2000 Power Specifications
Power Requirements: +10 to +30Vdc unregulated.
Power  Consumption  (@+15Vdc):  Max.  Current  w/RS-485  output
short,100mA.
Idle Current w/LEDs off, less than 10mA.

MECHANICAL AND DIMENSIONS
Case: Impact resistant ABS.
Weight: 2.8 lbs.(A1000), 1.0 lb.(A2000).
Dimensions:

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 on workmanship and materials.

CONNECTIONS
The A1000 and A2000 have three connectors located on the rear panel,
two  RS-485  connectors  and  one  RS-232  connector.  The  RS-485
connectors are 4 position screw-terminal plugs labelled RS-485 IN and
RS-485 OUT. The RS-232 input connector is a female subminiature DB-9
connector labelled RS-232 IN. The functional description of each terminal
is labelled directly above the connector on the rear panel. The RS-485
descriptions are all preceded by letters which correspond to the color
coded wires used in standard telephone cable: (B) Black, (R) Red, (G)
Green and (Y) Yellow. All DGH hardware using RS-485 contains this color
coded nomenclature. Figures 1A & 1B show the rear panel connections
for the A1000 & A2000.

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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