43-TV-25-11 GLO Issue 11 03/02 UK
57
If there is no data being displayed in the realtime graph area, check the comms
server is active, then check the comms server status to see if the recorder is
Talking
or
Waiting
. If there is still no realtime data being graphed, check to see
if the pause button at the bottom of the realtime graph area has been activated,
if so, click to deactivate.
Data will graph across the screen from right to left, the furthest point to the right
showing the current time. Place the cursor in the
Date/time bar
running along
the bottom of the graph area. use the right and left mouse buttons to zoom in
and out on the data. Ensure the time is synchronised between the recorder and
PC
.
The time displayed on the graph is the time set on the recorder, where ever
in the world it may be.
See “Realtime graphing across Time Zones” on page 57.
Right click in the graph area to produce the
Digital Values
cursor, hold the right
mouse button down to drag the cursor to any point in the graph area.
Pause button
The
Pause
button stops the automatic scrolling, the data will continue
to arrive in realtime, but the current time will stop on the right side of the
screen. This is to help the user review the realtime data that has passed off the graph to
the left. The
Horizontal scroll bar
at the bottom of the screen can be used to scroll back
and survey the previous data. To zoom in on a specific area of data, left click the mouse
button, hold and drag over the selected area in the
Time/date zone
at the bottom of the
graph area.
When the pause button is deactivated the auto scrolling will resume and the cur-
rent time will be displayed at the furthest point on the right side of the screen. Only time
is frozen, no data is lost, this includes event data if this option has been selected.
Realtime graphing across Time Zones
Realtime graphed data appears from the right hand edge of the screen and scrolls
to the left. The right hand edge represents the time ‘Now’. If an event occurs or a spike,
it happens at the moment you see it appear on the graph. The time not be the same as
the date line shows on the graph. The recorder has to be synchronised with the PC
through the same Comms Server.
Retrieving data via another Comms Server may give a different time setting. If the
user is accessing data from a recorder in a different time zone, the time displayed on the
graph will be the time set for the PC.
Example: User UK1 wishes to access data using the software on his PC in the
United Kingdom, the data is on a recorder in Washington D.C. USA. The Comms Server
in the US and is synchronised, on US time, with the recorder. User UK1 sees an event
occurs at 4.00pm (UK time) on the graph it would actually have happened at 11.00 am
on the recorder in Washington D.C. The graph will show the time lines as for real UK
time.
Data logged to disk will store the time as displayed on the PC and the recorder
once they have been synchronised.
For specific help, click on any part of the graph and press the F1 key on your key-
board to display the related help files.