12
1ms CREST capture mode (
TBM525 & TBM829
only)
Press
CREST
button momentarily to activate CREST (Instantaneous Peak-Hold) mode to
capture voltage or current signal duration as short as 1ms. The LCD “C” & “MAX” turn on.
The meter beeps when new MAX (maximum) or MIN (minimum) reading is updated. Press
the button momentarily to read the MAX , MIN, and MAX-MIN (Vp-p) readings in sequence.
Press the button for 1 second or more to exit CREST mode. Auto-ranging (up range)
remains, and Auto-Power-Off is disabled automatically in this mode.
Backlighted display
Press the
SELECT
button for 1 second or more to toggle the LCD backlight. The backlight
will also be turned off automatically after 32 seconds to extend battery life.
Beep-Jack
™
Input Warning
The meter beeps as well as displays “
InEr
” to warn the user against possible damage to the
meter due to improper connections to the
A, mA, or A input jacks when other function (like
voltage function) is selected.
Beep-Jack
TM
Input Warning
is disabled while
Data Logging
operation
(Model 525 & 521 only) is actiavted.
Hold
The hold feature freezes the display for later view. Press the
HOLD
button momentarily to
toggle the hold feature.
Relative Zero mode
Relative zero allows the user to offset the meter consecutive measurements with the
displaying reading as the reference value. Practically all displaying readings can be set as
relative reference value including MAX/MIN/AVG* readings. Press the
button
momentarily to toggle relative zero mode.
Manual or Auto-ranging
Press the
RANGE
button momentarily to select manual-ranging, and the meter will remain
in the range it was in, the LCD
turns off. Press the button momentarily again to step
through the ranges. Press and hold the button for 1 second or more to resume auto-
ranging.
Note: Manual ranging feature is not available in Hz function.
Set Beeper Off
Press the
RANGE
button while turning the meter on to temporarily disable the Beeper
feature. Turn the rotary switch OFF and then back on to resume.
Auto-Power-off (APO)
The Auto-Power-off (APO) mode turns the meter off automatically to extend battery life after
approximately 30 minutes of no activities. Activities are specified as: 1) Rotary switch or
push button operations, and 2) Significant measuring readings of above 512 counts or non-
