Summary of Contents for Redcliff Microsystems GCU 15
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Page 1: User Guide
GCU 15/25/100 Switching Units User guide Version 2.0 April 2005 Author: Peter A. Barlow Redcliff Microsystems Ltd. 5 Culver Way Sandown Isle of Wight PO36 8QG GCU 15/25/100 – User guide 1/11... -
Page 2: Table Of Contents
......................5 PERATION Powering Up....................5 Options ......................5 Option Details....................6 ....................9 YSTEM UIDE Battery System .....................9 Switching Ranges ..................9 Real-time capabilities .................10 Sleep Mode option based on Real-time clock settings .........10 ..................11 DDITIONAL OTES Timing Specification...................11 GCU 15/25/100 – User guide 2/11... - Page 3 Document Change History Version Date Changed Chapters Nature of Change Responsible November 2001 - Original version M Barlow April 2005 No content modification Reformatted for MSWord. P Barlow GCU 15/25/100 – User guide 3/11...
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Page 4: Introduction
This Option is selectable by the user but the choice selected is stored as a user requirement. GCU 15/25/100 – User guide 4/11... -
Page 5: Operation
It is preferable to leave the unit displaying an option whilst operating and when not under user control and essential to do so if the user wishes to take advantage of the power conservation GCU 15/25/100 – User guide 5/11... -
Page 6: Option Details
This facility allows the user to synchronise the SSPT switching unit to that of a Master SSPT/OCU unit or Surveyor system after the original switching cycle has already been established within the currently operating system. Either pair of the GCU 15/25/100 – User guide 6/11... - Page 7 Following this the Time Of Day is displayed and should be confirmed by the user. 8.8 Momentarily depress the ENTER Key after which the selected Switching Cycle is displayed for user confirmation. 8.9 The ENTER key should be now be depressed twice. GCU 15/25/100 – User guide 7/11...
- Page 8 10. “ Set Up EXTERNAL SYNC Ops. ?“ This option provides synchronisation as for the earlier versions of the GCU 15 after the ON & OFF periods have already been selected via Option 1. Synchronisation may be achieved via either pair of input socket connectors.
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Page 9: System Guide
The ENTER key secures a selection of any adjustment. When the display indicates “ COPY new Periods to Wkg. Regs.” provision is provided for using the Periods selected for the actual switching cycle. GCU 15/25/100 – User guide 9/11... -
Page 10: Real-Time Capabilities
A selected Sleep Period may of course be set to operate every day by positively selecting each day, or for over the weekend for instance by positively selecting only SATURI)AY & SUNDAY. To be effective, it is essential that the REAL TIME CLOCK is also correctly set up. GCU 15/25/100 – User guide 10/11... -
Page 11: Additional Notes
The long-term stability is typically 1 part in 1 million per year, a deviation which is compensated for when using either the CLONE or MIMIC facility. GCU 15/25/100 – User guide 11/11...
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