Enumerates the different clocks available for buffered I/O and tasks.
Namespace:
Quanser.HardwareAssembly: Quanser.Hardware.Hil (in Quanser.Hardware.Hil.dll)
Syntax
| Visual Basic (Declaration) |
|---|
Public Enumeration Clock |
| C# |
|---|
public enum Clock |
| Visual C++ |
|---|
public enum class Clock |
| JavaScript |
|---|
Quanser.Hardware.Clock = function(); Quanser.Hardware.Clock.createEnum('Quanser.Hardware.Clock', false); |
Members
| Member name | Description | |
|---|---|---|
| Hardware0 | Hardware clock 0 | |
| Hardware1 | Hardware clock 1 | |
| Hardware10 | Hardware clock 10 | |
| Hardware11 | Hardware clock 11 | |
| Hardware12 | Hardware clock 12 | |
| Hardware13 | Hardware clock 13 | |
| Hardware14 | Hardware clock 14 | |
| Hardware15 | Hardware clock 15 | |
| Hardware16 | Hardware clock 16 | |
| Hardware17 | Hardware clock 17 | |
| Hardware18 | Hardware clock 18 | |
| Hardware19 | Hardware clock 19 | |
| Hardware2 | Hardware clock 2 | |
| Hardware20 | Hardware clock 20 | |
| Hardware21 | Hardware clock 21 | |
| Hardware22 | Hardware clock 22 | |
| Hardware23 | Hardware clock 23 | |
| Hardware24 | Hardware clock 24 | |
| Hardware25 | Hardware clock 25 | |
| Hardware26 | Hardware clock 26 | |
| Hardware27 | Hardware clock 27 | |
| Hardware28 | Hardware clock 28 | |
| Hardware29 | Hardware clock 29 | |
| Hardware3 | Hardware clock 3 | |
| Hardware30 | Hardware clock 30 | |
| Hardware4 | Hardware clock 4 | |
| Hardware5 | Hardware clock 5 | |
| Hardware6 | Hardware clock 6 | |
| Hardware7 | Hardware clock 7 | |
| Hardware8 | Hardware clock 8 | |
| Hardware9 | Hardware clock 9 | |
| System1 | System clock 1 (typically one millisecond minimum period) | |
| System2 | System clock 2 (generally not supported) | |
| System3 | System clock 3 (generally not supported) | |
| System4 | System clock 4 (generally not supported) |
Remarks
Clocks in the Quanser .NET Class Library are divided into two broad categories: system clocks and hardware clocks.
System clocks are provided by the underlying operating system and are generally limited in their accuracy and minimum period. For example, on Windows, Clock.System1 has a minimum period of one millisecond. Its accuracy can be quite poor on some systems, exhibiting a fair amount of jitter. Most systems only support one system clock.
Hardware clocks are counters/timers on the data acquistion card itself. Hardware clocks are much more accurate and are generally faster, allowing sampling rates under one millisecond. Most data acquisition cards support more than one counter/timer if these hardware resources are provided.
See Also
