(E) 7
LT20A / LT30 Series
Note
• If upper display A+B and lower display A have been
selected, the comparator setting values of channel A will
be applied on both the upper and lower limits.
• When the upper display A+B is selected, the lower
display only shows the current value of the selected
channel and no operation can be made on the lower
display.
Preset status indicator
When P is displayed the preset value is set.
Peak-hold indicator
When MAX/MIN/P-P is displayed the data shown is the
maximum/minimum/maximum–minimum value.
When neither of the them is shown, the current value is
displayed.
Comparator upper limit setting indicator
Displayed when the comparator value has been set. The
upper digits are the upper limit.
Comparator lower limit setting indicator
Displayed when the comparator value has been set.
The lower digits are the lower limit.
• Up to four different comparator upper and lower limit
settings (CPH1 to CPH4 and CPL1 to CPL4) can be
stored in the memory for LT20A-101B/201B and LT30-
1GB/2GB.
• LT20A-101/201/101C/201C and LT30-1G/2G/1GC/2GC
have only one setting each.
Key lock indicator
Lighted when key lock is established; off when key lock is
released.
Comparator upper
limit setting indicator
Comparator lower
limit setting indicator
Peak-hold indicator
Preset status indicator
Main display
Displays the measured data, setting data for various
modes, or alarms, etc.
Selected channel indicator (2 channel model)
Choose one of these four.
• A : data from measuring unit,
input channel A
B : data from measuring unit,
input channel B
A+B: sum of data from channel A and B
• In order to carry out calculations such as A–B or –A+B,
change the direction of A or B to “+” or “–”.
(Initial settings)
Upper AA+BA+BA+B
Lower BA B –
Selected channel indicator
Key lock indicator
mm
M A X M I N P — P C P H1 2 3 4
P
mm
M A X M I N P — P C P L1 2 3 4
P
A
B
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