Enterprise Electronics Corporation DWSR-2001X 用户手册

ISSUE/REVISION DATE:  25 JULY 2007 

TECHNICAL MANUAL 

Interface Control Document (ICD) 

ENTERPRISE ELECTRONICS CORPORATION 

Rev No. 

5 

Page 8 of 21 

Issue Date 

25 July 2007 

UM-130365 

Distribution Data Collection 

Module (DDC) 

THE DATA PRESENTED HEREIN REPRESENTS THE INTELLECTUAL PROPERTY OF ENTERPRISE ELECTRONICS CORPORATION (EEC).  THIS DATA MAY NOT BE DISTRIBUTED OR REPRODUCED BY 
ANY MEANS WITHOUT THE EXPRESS, WRITTEN CONSENT OF EEC. 

 

JP1-JP4 

 
 

 

The eight buffered TTL outputs are connected to the 37 pin D connector, J4, visible in Figure 4. 
 
The eight analog to digital inputs (ADC) with a resolution of 10 bits are connected to the 37 pin D con-
nector J3, visible in Figure 3.  Each input is filtered by a .1 mF capacitor.  The reference voltage for the 
ADC is 5.0 volts.  Input range is from 0 to +5 VDC. 
 
The eight Sink Driver outputs are connected to the 37 pin D connector, J3, visible in Figure 3. Each sink 
driver can sink up to 500ma at up to +24VDC.  Each sink driver is equipped with a current protection 
diode for driving relays or inductive loads. 
 
The DDC auto-ranging DC voltmeter circuit is seen in Figure 5.  The auto-ranging DC voltmeter circuit 
allows the DDC to be connected to a wide range of bi-polar inputs.  Voltage inputs can be bi-polar from 
0 to 200 volts.  The input impedance is 1 Meg Ohm.  There are 8 inputs and 2 grounds.  Access to the 
voltmeter inputs are through the J2 10-circuit screw down terminal block connector.