技術參數：
|
applicable stangdards
|
iec pub 60651 type2, ansi s1.4 type 2
|
|
digital display
|
4digital lcd, 0.1db resolution,up-dated every 0.5s
|
|
measurement level
|
25～130db
|
|
measurement frequency range
|
31.5hz to 8 khz
|
|
frequency weighting
|
a and c
|
|
time weight
|
fast and slow
|
|
microphone
|
1/2 inch electret condenser microphone
|
|
measurement level range
|
5 ranges in 10-db step:25～80db 30～90db 40～100db 50～100db 60～120db 70～130db
|
|
quasi-analong bar indicator
|
1-db steps,60db display range ,up-dated every0.125s
|
|
display warning function
overrange indicator
underrange indicator
|
ov displayed at the upper limit
un displayed at the lower limit
|
|
manual data memory capacity
|
99 sets
|
|
analong ac/dc output
|
2vrms (at full scale), 10mvdc/db
|
|
power supply
|
one 9v battery (006p to iec6f22) ac adapter
|
|
battery life
|
about 50 hours
|
|
weight
|
approx.310g
|
