TPI 270, Instruction Manual

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Other Features (continued)
Peak Hold Mode (P-H)
The Peak hold function allows the 270 to display the the
maximum and minimum peak voltage or current. This is
helpful when measuring inrush current.
NOTE: Peak mode can display up to 70 counts on the dis-
play when first activated. For example, if the 270 is set to
the ACA function and manually ranged to the 40A range,
when P-H is activated the display can read up to 0.70.
This is normal for this function.
1. Manually select the range for the function and set
the meter up to perform a measurement as outlined
earlier in this manual.
2. Depress and hold the P-H button until CAL is dis-
played. Once CAL clears from the display you may
make a measurement. Press
P-H repeatedly to cycle
through the maximum and minimum peak readings.
Press and hold the
P-H button for two seconds to
return to normal operation.
For inrush current, after CAL clears press the P-H
button and then supply power to the device under
test. The 270 will capture the maximum and mini-
mum peak inrush.
Other Features (continued)
Record Mode (MAX / MIN)
Record mode allows you to record the maximum and
minimum readings measured during a test.
1. Manually select the range for the function and set
the meter up to perform a measurement as outlined
earlier in this manual.
2. Depress the MAX/MIN button and “MAX” will be
displayed along with the maximum reading record-
ed. Press the
MAX/MIN button again and the display
will show MIN and the minimum reading recorded.
3. Press the MAX/MIN button again and MAX MIN will
blink and the 270 will display the measured value in
real time. Steps 2 and 3 can be repeated to read the
maximum and minimum recorded values.
If REL was activated and is being used with
MAX/MIN, REL and MAX MIN will blink and the dis-
play will show the REL value instead of the real time
reading.
5. To exit record mode, press and hold the MAX/MIN
button for approximately two seconds and the 270
will beep and return to normal operation.