407790A-en-US_v2.0 8/16
47
Time
weighting:
Main channel: Fast (125ms), Slow (1000ms), 10ms, Impulse (35ms)
Sub channel: Fast (125ms), Slow (1000ms), 10ms, Impulse (35ms)
Measurement
level
range:
A
‐
weighting: 25 to 130dB
C
‐
weighting: 33 to 130dB
Z
‐
weighting: 38 to 130dB
Total
meter
range:
25dB to 130dB (A
‐
weighting, 1kHz)
Linear
operating
range:
90dB
Level
Range:
20 to 90dB, 20 to 100dB, 20 to 110dB, 30 to 120dB, 40 to 130dB
Sampling
cycle:
20.8 µS (L
N
: 100ms)
Trigger
function:
Controls measurement and memory store start
Level
1:
Trigger level (1
‐
dB steps) serves as threshold for starting measurement
Level
2:
Single measurement is carried out when trigger level is exceeded
EXT:
External trigger connector for logic
‐
level signal with falling edge detection
TIME:
Trigger event recurrence interval (trigger time) is set.
Store
: Sound level values and processing results are stored in manual store or auto store mode.
Data can be stored in internal memory or on micro SD card.
Manual
store
: Data for measurement results and measurement start time are stored manually,
in single address increments.
Data
store
capacity
: max. 250 data sets.
Auto
store
: Measurement results are stored continuously at the preset record interval time (for
Auto 1) or the preset measurement integrated time (for Auto 2), and the measurement
time.
Data
store
capacity
: Memory capacity can be divided to 250 blocks max.
Memory
capacity
: See Table below (Manual/Auto storage blocks are separate)
Storage
type
Mode
Flash
SD
card
Sound level meter
25087 data sets
29992366 data sets
1/1
‐
octave analysis
16185 data sets
19944162 data sets
1/3
‐
octave analysis
9466 data sets
11942248 data sets
1/1 and 1/3 OCT mode
7839 data sets
9946834 data sets
