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19
MAIN UNIT
4
STARTING RECORDINGS
4
STARTING RECORDINGS
As you have seen in the previous sections, there are two ways of recording
data: on-line and off-line.
Programs supplied with the PC-Logger 3150, guide the user through the set-up
procedures necessary before recordings can be started.
On-Line Recordings are initiated from the computer.
Data is then continuously transferred via the RS-232 interface and stored on
disk.
The user must however be aware of the limited speed at which data can be
acquired in this mode (see 1.1).
This mode is explained in detail in the software manual. The rest of this
section will therefore deal exclusively with off-line recordings.
Off-line recordings are prepared by setting the appropriate parameters with
the help of the supplied software (see program manual).
Start and Stop parameters are particular to the "f"-version of the PC-Logger
3150. How they work is explained below.
Start and Stop levels are programmed in the "Activate channels" part of the
program. Access to this facility is gained in the "TRIG" column.
Don't forget to switch these levels ON after you have programmed them.
Start and Stop parameters are activated in the "parameter" part of the software.
4.1
Start Trig
There are four different factors that may start the PC-Logger 3150 recording
after "Start Recording" has been okayed by the operator:
1 -
Another "OK" key-stroke or
2 -
A logical high at the trig input or
3 -
An analog signal outside a programmed level or
4 -
A logical high at the trig input followed by an analog signal
outside a programmed level
4.1.1
Start on key-stroke
Use the keys next to the LCD and "OK" all steps up to the point where it says
RECORDING: READY FOR STOP.
It will now record with set sampling interval until a stop condition is met.
Содержание PC-logger 3150
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