Unipulse F350, Operation Manual

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51
7 EXPLANATION OF HOLD FUNCTIONS
51
EX
PLANATION OF HOLD FUNCTIONS
Chapter
7
7-2.
Setting of hold mode
■
Hold mode setting method
1.
Select setting mode 1.
Press once.
2.
Set "
Hold mode
."
Press four times ⇒ "Calculation hold function
select " is displayed.
Press , and the highest digit blinks.
Move to the lower digits with .
Input the setting value with .
(Initial value:0001)
Validate it with .
3.
Press twice to go back to the indicated value
display.
■
Sample hold
The start point of the specified section is held.
The section is specified by the setting of "all section" or "external signal."
(Example) All section sample hold
t1: A delay time between the instant
when the T/H signal is inputted and the
instant when the indicated value is held
Approximately 0.7ms
（ MAX. ）
t2: A delay time between the instant
when the T/H signal is released and the
instant
when the indicated value returns to
tracking
Approximately 0.7ms
（ MAX. ）
t3: A minimum reset signal width
required for releasing the hold
Approximately 0.7ms
（
MIN.
）
The delay time and signal width
expressed apply when the A/D
conversion speed is 3000 times/sec.
They become 10-times when the A/D
conversion speed is 300 times/sec.
Ch1 Ch
2
H I
LO
H I LO
FNC
H I
Ch1 Ch 2
OK LO PEAK HOLD
H I LO
H I
LO
Hold section
Hold mode
0 0 0 1
Calculation mode
Auto reset
《 Setting value 》
0
：
OFF
1: Sample
2: Peak
3: Bottom
4: Average
ESC
Indicated
t2
t3
t1
Internal caleulated value
Hold Section
Fixed
t
＋
T/H
HI-LO Limit
Judging Output
H/E
OFF
ON
OFF
ON
OFF
ON
HOLD
OFF
ON
Button
HOLD
Status Display
PEAK
Status Display
ON Blink Blink
OFF
Value