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INTAB Interface-Teknik AB
4.1.2
Start on digital input
A digital signal may be connected to the trig input. A high level will start the
recording if the LCD shows "STANDBY ... READY TO START".
A "high level" is a voltage above 4V.
The digital input source may be either a TTL/CMOS signal or a simple contact
closure. Be sure to get your wiring correct and note that the GND is the same
point as the analog GND. (See section 3 for implications)
4.1.3
Start on Analog Level
A recording may also be started by an analog signal being outside a
programmed level or "window".
Levels may be programmed so that a recording will be started when a signal
either goes above a set level or under another set level.
If these two levels are set to -2V and +3V respectively, the recording will not
start as long as the signal is inside this range. A signal below -2V or above 3V
will start the recording.
4.1.4
Digital and Level Start combined
Both the digital and level methods may be used in one recording. The logger
will first monitor the digital input for a trig condition. When it occurs it will
monitor analog inputs for levels outside set levels. When trig levels are
detected the recording starts.
In other words : both trig conditions must be met before recording starts.
4.2
Stop Trig
There are four ways of stopping a recording:
1 -
A key-stroke or
2 -
A logical low at the trig input or
3 -
An analog signal outside a programmed level or
4 -
Memory full
4.2.1
Stop on key-stroke
Any key-stroke will always stop a recording.
Содержание PC-logger 3150
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