HDT NTT 240, Инструкция по установке и эксплуатации

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NTT 240/460
Operation mode
Installation and user guide
Rev: 4.0
6.14.4 Scope: ‘TRIGGER’
Trigger modes are listed below:
•
Rolling
: in this mode, Scope acquires continuously all enable channel data; trigger menu shown below
is disabled.
•
Automatic
: in this mode, Scope acquires data every occured trigger condition; trigger menu is enabled
in order to allow setting channel selection, trigger amplitude and position time fopr triggering.
• One Shot : in this mode, Scope acquires data once, only when desired condition trigger is occured;
trigger menu is enabled in order to allow setting channel selection, trigger amplitude and position
time fopr triggering.
Optional dinamic trigger (Enable Dinamic) allows to visualize data in realtime during acquiring.
Buffer bar, shown at the low of trigger menu, allows to set total or partial data related to time axis up to maximum
admitted acquiring time. Decreasing visualization time, only a part of acquired data is shown in Scope, while the
resolution is unchanged.
It’s recommended to set buffer bar correctly in order to view periodic signals in realtime.
An example of trigger setting and related acquiring condition is shown below; acquiring condition is enabled on
channels described below:
1. CH1 - Speed reference: this is the read reference provided to drive into the main speed reference input;
trigger will acquire this channel when signal rises beyond threshold set into trigger set-up window .
2. CH2 - Measured speed: this signal is the motor speed reading.
3. CH4 - Measured current: this signal is the supplied current reading.