GRAPHTEC GL820 - Page 57

3−21
CHAPTER 3 Settings and Measurement
(1)-6 Misc.
Setting Description
(1) Inter-CH Op Settings
Sets what to do in calculation between channels.
Four arithmetic operations (+, -, x, ÷) can be set as calculation between channels.
* Refer to the next page for details.
(2) Span
Sets the upper and lower limits of values of a span in which a waveform should be dis-
played.
(3) Waveform Color Setting
0 to 31 for each of red, green, blue (RGB)
(4) Amplitude Setting 1 to 8 dots
(5) Perform Auto Zero ADJ.
Performscalculationusingthecurrentinputvoltageasthezeropositionvoltagevalue.
The range of voltages that can be automatically adjusted is ±10% of the setting range.
<Example>
For 1 range, the input voltage can be adjusted between -0.1 V and +1.0 V.
* For temperature input, this function is not available.
(6) Reset Auto Zero ADJ.
Cancelsthezeropositionvoltagevalueanddisplaystheinputvoltage.
(7) [Zero position voltage
value]
Displaysthezeropositionvoltagevalue(Displayonly).
<Inter-CH Op Settings (1)>
Setting
Description
(1) Inter-CH Op Settings
Function
Off, On
If this setting is ON, the channel has a calculation mark in the digital display, etc.
(2) Operation
CH-X (Function) CH-Y
CH-X CH1 to CH200
Function Four arithmetic operation functions (x, -, x, /)
CH-Y CH1 to CH200
(3) Scaling
/1000000, /1000, ×1, ×1000, ×1000000
Sets the scaling factor for a calculation result.
<Example>
Result = 0.001 Result = 1000
x 1: 0.001 x 1: 1000
x 1000: 1 /1000: 1
x 1000000: 1000 /1000000: 0.001
(4) Upper/Lower limits
Sets the upper and lower limits of values of a span in which a waveform should be dis-
played.
The setting value is in reference to a calculation result.
(5) Dec pt
Sets the decimal point position for a span setting.
(6) Select
Selects a unit in which a calculation result should be displayed.
Current,length,area,volume,speed,acceleration,frequency,weight,work,pressure,ow
rate, temperature
(7) Choose
Selects a unit to be used after conversion. A unit displayed in this field belongs to the clas-
sification selected in "Select." To set a unit not displayed in this field, set arbitrary text in
"Arbitrary unit." The setting selected in this field is displayed in "Arbitrary unit."
(8) Arbitrary Unit
Sets a unit to be used after conversion. Arbitrary text consisting of alphabetical characters
and numerical values can be set as a unit. (Refer to page 3-46 for details on the text input.)
When "Select" or "Choose" is used, the setting is reflected in this field.
 • Calculationresultsaredisplayedinvolts.
The calculation result for 100 mV + 100 mV is 0.2.
Use Scaling to display this result as 200 mV.