10 (E)
LT20A / LT30 Series
4-3-4. Peak-hold function
• Stores the maximum, minimum, and peak-to-peak
(maximum–minimum) values of the measured values.
• The above mentioned measuring mode is set using the
keys on the front panel.
• The device starts storing values either when a start signal
is supplied to the start/latch pins (channel A: pin w,
channel B: pin r) of the lower 7-pin I/O connector
(common) (See “7. I/O connector”.) or when the reset key
has been pressed.
4-3-2. Preset functions
• In the case of the setting which does not use the
reference point, it is possible to set a preset value for
each of the current value, maximum value and minimum
value measuring mode; for the setting which uses the
reference point, it is possible to set the master values.
• For instructions on setting the preset value, please refer
to “5-2-1. Setting the preset value.”
4-3-3. Result evaluation
• Go/No Go test is carried out by comparing data from the
current measuring mode (current value, maximum value,
minimum value, or peak-to-peak value) to the comparator
upper and lower limits.
• This result is displayed on the front panel and output from
the I/O connector (See “7. I/O connector”.).
Result
High
Go
Low
Display
>
\
?
=
Condition
Data > upper limit
Upper limit
>
data
>
lower limit
Lower limit > data
=
Operation
I/O connector (common) A CH:
starts on “L” (ON) signal from pin
w; I/O connector (common) B
CH: starts on “L” (ON) signal
from pin r.
Reset key is pressed
(For the setting which does not
use the reference point)
Result
Starts storing from the current
value.
Starts storing from zero.
When a preset value is set the
device starts storing from the
preset value.
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