GRAPHTEC GL820 - Function Specifications; Trigger Functions

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CHAPTER 4 Specifications
4.2 Function Specifications
Function Specifications
Item Description
Display screen Waveform + Digital screen, All Waveform screen, Digital + Calculation Display
screen, Expanded digital screen
* Can be switched using the dedicated key (toggle operation)
* For the Expanded Digital screen, the number of channels and the display
channel must be specified
Sampling interval 10 ms/1 ch maximum
10, 20, 50, 100, 125, 200, 250, 500 ms; 1, 2, 5, 10, 20, 30 s; 1, 2, 5, 10, 20, 30
min; 1 h; External
* The settings of 50 ms or below can be used depending on the input settings
and the measuring channel.
EU (scaling function) 4 points can be set for each channel
• The temperature range scaling function is available.
Functions during capture • Double-screen display
• Exchange of USB memory
• Saving of data between cursors
Data save function Internal memory capture
USB memory capture
Saving of setting data (main or USB memory)
Saving of screen copy data (main or USB memory)
Ring capture Function : ON, OFF
Number of recording points : 1000 to 2000000
* When ring capture is ON, the memory space that can be used for capture is
one-third of the free space or less.
Calculation between channels Calculation type : Addition, subtraction, multiplication, and division
Input target : Analog channels 1 through 200
Statistical calculation Types of statistical calculation : Average value, peak value,maximum value,
minimum value, RMS
Number of operations : maximum of 2 can be set simultaneously
Method : Realtime and between cursors specified
(during data replay)
Note : Calculation results are displayed in Digital
screen + Calculation Display screen
Search functions Function : Search the captured data for the required number of points
Search type : Channel Pulse, Logic, Level, Alarm search
Annotation input function Function : A comment can be input for each channel
Inputtable characters : Alphanumerics
Number of characters : 31
Trigger Functions
Item Description
Repeat Trigger Off, On
Trigger types Start: Data capture starts when a trigger is generated.
Stop: Data capture stops when a trigger is generated.
Trigger conditions Start: Off, Level, Alarm, External,Time, Date, Weekly
Stop: Off, Level, Alarm, External,Time, Date, Weekly
Level trigger judgment modes Combination : Level OR, Level AND, Edge OR, Edge AND
Analog channel judgment mode : H (↑), L (↓), Window In, Window Out
Logic channel judgment mode : H (↑), L (↓)
Pulse channel judgment mode : H (↑), L (↓), Window In, Window Out
Alarm judgment modes Detection method : Level, Edge
Analog channel judgment mode : H (↑), L (↓), Window In, Window Out
Logic channel judgment mode : H (↑), L (↓)
Pulse channel judgment mode : H (↑), L (↓), Window In, Window Out