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技术参数:
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 |
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