(E) 9
LT20A / LT30 Series
e Measuring unit input : SIG. IN A
r Measuring unit input : SIG. IN B (2 channel models)
ty BCD Output
With the 2 channel models the upper and lower
selections of the front panel’s main display correspond
to the BCD OUT. A/BCD OUT. B. So if “A+B” is
selected the output is to BCD OUT. A.
The following operations are possible when BCD
input/output terminal is used.
Input : Comparator value selection (4 settings),
measuring mode (current value, maximum value,
minimum value, peak-to-peak values) selection
Output: 6 digits
Outputs one of the current, maximum,
minimum, and peak-to-peak values selected
via the keys on the front panel and the
external input.
Alarm output
u RS-232C interface
(See “9. RS-232C Interface”.)
Reset, peak-hold start, setting/recall of preset values,
setting the comparator value, selecting and outputting
the current value/maximum value/minimum value/
peak-to-peak value.
4-3. Function description
4-3-1. Reset key
Counter unit
Measuring mode
(Current value, maximum
value, minimum value,
peak-to-peak value)
Preset mode
(P and the selected digit
will flash.)
“Error” is displayed
Operation performed when reset
key is pressed
• For the setting which does not
use the reference point
Display is set to zero.
When a preset value has been set,
it is recalled.
(Except when the Measuring mode
is set to peak-to-peak value)
• For the setting which uses the
reference point
At the press of the key, the
maximum and minimum values will
be set to the current value (peak-
to-peak value = 0). When the key
remains pressed for two seconds,
the unit is set to the reference point
signal input wait satatus.
Preset value is set to zero.
• For the setting which does not
use the reference point
“Error” is canceled and then
returnes to the measuring state.
• For the setting which uses the
reference point
“Error” is canceled and the unit
enters the reference point signal
input wait status.
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