User's Manual

CHAPTER 8 INTERFACE CONTROL DOCUMENTS (ICD)
APPENDIX A INTERFACE CONTROL DOCUMENTS (ICD)
ISSUE/REVISION DATE: 25 JULY 2007 TECHNICAL MANUAL
ISO 9001:2000 PROPRIETARY
Interface Control Document (ICD) ENTERPRISE ELECTRONICS CORPORATION
Rev No. 5 Page 9 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.
AUTO-RANGING DC VOLTMETER
The DDC module incorporates a digital trigger protection circuit that allows for the input of two sepa-
rate triggers. Trigger inputs are on 37 pin D connector J3 pins 10 and 11. Each trigger input is 50 Ohm
terminated and can take trigger pulses up to 25 V peak with duty up to 50% without damage to circuits.
PRF maximums are set in memory and can be changed at any time using the Ethernet or serial interface.
The DDC provides trigger generation circuitry for local mode testing of the transmitter. The internal/
external trigger mode is selectable via the Ethernet or serial interface and generates 1007 PRF and 250
PRF.
Trigger outputs are on the same 37pin D connector J3 pins 23 and 33.