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4.4 Limit Operations
Limit operations set and control the values that determine the HI / IN / LO status of subsequent
measurements. Limits can be applied to all measurement functions except continuity. The limit test is
performed after percent math operations. Unit prefixes are applied before the limit test, for example:
Low Limit = -1.0, High Limit = 1.0
A 150mV reading equals 0.15V (IN).
Low Limit = -1.0, High Limit = 1.0
A 0.6kΩ reading equals 600Ω
(HI)
You can configure the multimeter to beep or not when readings are outside of the limit range.
4.4.1 Enabling limits
Use the following procedure to turn on the limit operation:
1. Press
Shift
→
to enter or exit the set of LIMIT TEST function.
4.4.2 Setting Limit Values
Use the following steps to enter high and low limit values:
1. Press
Shift
→
to enter the menu on the menu level.
2. Use
or
key to move across to the MATH MEU on the menu level,
―
A: MATH MEU
‖
will
be displayed.
3. Press
to move down to the command level within the MATH MEU.
4. Use
or
key to move across to the HIGH LIMIT command,
―
1: HI LIMIT
‖
will be
displayed.
5. Press
to move down a level to input the high limit value. The present high limit value will be
displayed:
HI: +1.00000
6. Use
and
keys to choose a numerical place and use
and
keys to
increment or decrement the digits. Enter an expected value for high limit.
7. Press
(ENTER) to confirm the value of high limit. The message
―
SAVED
‖
will be displayed to
show that the change is now in effect. TH1942 will exit the parameter level and move up a level to
the command level.
8. Use
or
key to move across to the LOW LIMIT command,
―
2: LO LIMIT
‖
will be
displayed.
9. Press
to move down a level to input the low limit value. The present low limit value will be
displayed:
LO: -1.00000
10. Use
and
keys to choose a numerical place and use
and
keys to
increment or decrement the digits. Enter an expected value for low limit.
11. Press
(ENTER) to confirm the value of low limit. The message
―
SAVED
‖
will be displayed to
show that the change is now in effect. TH1942 will exit the parameter level and move up a level to
the command level.
12. Press
Shift
→
key to exit from the menu and return to the measurement status.
