Software application manual - VTP UP

Creating and Modifying Acquisition MethodsEach timed event consists of a time point and an event type. Some events mayalso include an event channel as well as an event value.Timed events are tabulated in the Timed Events grid. The default grid has noevents. To add an event, simply click in the cell that reads “Select to addevent...”, then choose an event from the drop list. Click in either adjacent cell to“activate” the event. Edit the event’s time, in minutes, and, if a cell has either achannel option or an associated value, select or edit the appropriate channel orvalue cell. Cells with no expected entries are displayed in light gray.Depending on personal preference, timed events can be entered using primarilythe mouse or the keyboard. When primarily using the keyboard, each time theTab key is pressed the focus moves to the next cell in the row. Pressing the Tabkey at the end of a row advances the focus to the Time column of the next row.(Shift Tab reverses the flow.) When a cell has the focus, its contents can beedited by using the up and down arrow for drop lists (Event, Channel and GainRange Value) or by editing directly (Time and Potential Value).Time. Specifies the time of the event in minutes from the beginning of EC dataacquisition.Event. Specifies the event to occur at the specified time.Channel. Specifies the channel or channels on which the event is to apply. Thechannel is irrelevant in Pulse mode. In DC mode, the channel can be specified forthe Gain Range, Potential and Event Mark events only.Value. Specifies the value for the event. This applies only to the Gain Range andPotential (DC mode only) events.The following events can be designated:Gain Range. This event changes the gain range to a new value, selected from thedrop list in the Value field, at the specified time into the run.Auto Zero. This event implements an autozero at the specified time. Anautozero event must not occur at the end of the timed events. Furthermore, thenext event following the autozero event must not occur before 15 sec (0.25 min)have elapsed since the autozero. These conditions are checked prior to attachingthe method properties to an Analyst file; a warning is provided if the conditionsare not met.Cells Off. This event turns the cells off at the specified time. Once turned off,cells cannot be turned back on by another timed event. (There is no Cells OnCoulochem ® III Analyst Driver – Version 1.0 33User’s Manual