5. AUTO POWER DISABLE
The instrument has built-in " Auto Power Shut-off "
in order to prolong battery life. The meter will switch
off automatically if none of the buttons are pressed
within approx. 10 min.
To de-activate this feature, Select the memory record
function during measurement, by pressing the
" REC. Button " ( 3-5, Fig. 1 ).
6. MEASURING CONSIDERATION
1) Please should select the proper time weighting ( A
weighting or C weighting ). Typically the A weighting
selector will be engaged.
2) Please don't keep or operate the instrument at high
temperature & humidity environment for a long period.
3) Keep microphone dry & avoid serious vibration.
7. SIGNAL OUTPUT
7-1 AC output
The instrument is provided an 3.5 mm dia. phone socket
( 3-10, Fig. 1 ) for AC output, it is used to connect with
analyzer, level recorder, tape recorder, controller...etc.
Note :
AC 0.5 Vrms corresponding to each range step.
Output impedance - 600 ohm.
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