Controls
LCD Display
A
Wind shield
B
LCD display
C
ON/OFF & Backlight
D
Frequency weighting button
E
HOLD button
F
Level range & Record
G
Fast/Slow time weighting
H
Max/Min hold button
Note
: In even mild windy conditions it is essential that the wind shield (A) is used to reduce the effects
of wind and air movement across the microphone and thus avoid picking up background noise. The
wind shield also protects the sensitive microphone from damage and keeps the microphone capsule
clean.
1. Refer to
Figure 1
: Turn the instrument ON by pressing the
ON/OFF
button (
C
).
2. Press the
LEVEL/REC
button (
F
) to cycle through to the best level (of 4) for the noise measurement
task in hand. Watch for the OVER and UNDER indicators at the top of the display; select a level
where these indicators are off.
3. Press the
A/C
button (
D
) to choose the required filter dBA or dBC; each filter has a different
sensitivity to various frequencies. The dBA sound level meter applies to the mid-range frequencies
as opposed to the dBC sound level meter that measures low and high frequencies. For example,
when transmitted sound has bass issues or problems, the C filter is typically used (entertainment
venues, etc), or for high pitched sounds from machinery.
4. The
F/S
button (
G
) selects either FAST sampling for instant sound or SLOW sampling for an average
sound level.
5. The
MAX/MIN
button (
H
) is used when you need to monitor the maximum sound level, or
minimum
sound level, at the time of measuring.
6. You can measure sound levels by holding the instrument in your hand, or mounting on a tripod,
ideally 1-1.5 metres from the sound source. Refer to (
3
) in
Figure 3
for position of tripod mount.
6605
RECORD:
HOLD + LEVEL
CLOCK
EXIT
READ:
LEVEL +
SOUND LEVEL:
A/C
ON/OFF
HOLD
MAX MIN
F/S
ERASE MEMOR
Y:
HOLD +
01=30 ~80dB
02=50 ~100dB
03=80 ~130dB
04=30 ~130dB (AUT
O)
IEC 61672-1 CLASS 2
LEVEL REC
A
B
C D E
G H
F
Fig. 1
Fig. 2
MAIN
DISPLAY
RANGE
INDICATOR
Symbol
Function
MN
MIN – Minimum sound level capture
MX
MAX – Maximum sound level capture
F
FAST sampling rate
REC
Data has been recorded
S
SLOW sampling rate
Low battery
HOLD
Data hold function
dBA
A-weighting (response to human hearing)
dBC
C-weighting (response to machine monitoring)
OVER
Over upper limit of range
UNDER
Under lower limit of range
Fig. 2
MAIN
DISPLAY
RANGE
INDICATOR
Operation
•
ON/OFF
and backlight button (
C
): Press once to turn on the instrument; press again to turn on
backlight; press again to switch off backlight. To turn instrument OFF, press and hold ON/OFF and
backlight button; the display will count down
P--3
,
P--2
,
P--1
. When screen goes blank, release the
button.
• Frequency weighting button (
D
): (Refer to point
3
in
Operation
section above).
•
HOLD
button (
E
):
Data HOLD
: Press button once to freeze the reading on the display; press again
to return to live monitoring.
Data ZERO
: Instrument switched OFF: First press and hold the
HOLD
button then also press the
ON/OFF
button. Keep both buttons held down until
CLA
is displayed;
this indicates that all readings stored in the memory have been erased.
•
LEVEL RANGE/RECORD
button (
F
):
1.
Range select
: the range level is represented on the display by the two small digits on the
right-hand side (refer to “Range Indicator” on
Figure 2
). Cycle through the 4 available levels by
pressing the button:
01
(low level): 30-80dB;
02
(medium level): 50-100dB;
03
(high level): 80-
130dB;
04
(AUTO): 30-130dB.
2.
REC Record Function
: To record readings, first press the
HOLD
button (
E
) to freeze the
display; then press the
LEVEL/REC
button (
F
) to place the reading into the memory.
REC
will
appear on the display to indicate that the reading has been saved. Press the
HOLD
button again
to return to live monitoring.
3.
Data Reading Function
: To read the data that you have recorded, first switch off the instrument;
now hold down the
LEVEL/REC
button and press the
ON/OFF
button once. When
dAtA
is
displayed, release the
LEVEL/REC
button and the first stored reading will be displayed. Up to
50 readings can be stored. Cycle through these readings by repeatedly pressing the
LEVEL/
REC
button. For ease of reference, each reading is numbered 1 through to 50 as indicated by
the two small digits on the right hand side of the display (refer to “Range Indicator” on
Figure 2
).
Each reading has an automatically recorded date and time; press the
HOLD
button once to see
the date; press the
HOLD
button again to see the time. A third press of the
HOLD
button returns
the display to the recorded reading. (See section below on how to set the date and time on the
instrument).
•
MAX/MIN
button (
H
): (Maximum and Minimum Hold): Select the required mode by pressing the
MAX/MIN
button;
MX
or
MN
will indicate mode. With
MX
mode, the maximum sound level will
be captured and held by the instrument until a higher sound level is captured. In
MN
mode, the
minimum sound level will be captured and held until a lower sound level is captured.
•
Setting the Time & Date
: To set, begin with the instrument switched OFF. To enter the setup
mode, hold down the
A/C
button (
D
) a press the
ON/OFF
button (
C
) until
SEt
is displayed; release
both buttons. The currently set date will be displayed in the format day/month/year; this screen
cannot be edited. Press the
A/C
button again and the currently set time is displayed in the format
hours/minutes/seconds; this screen cannot be edited.
1.
To edit minutes
: press the A/C button again to enter the
edit minutes
mode; use the
LEVEL/
REC
button to advance the number; use the
MAX/MIN
button to decrease the number.
2. To
edit hours
: press the A/C button again to enter the
edit hours
mode; use the
LEVEL/REC
button to advance the number; use the
MAX/MIN
button to decrease the number.
3. To
edit date
: press the A/C button again to enter the edit date mode; use the
LEVEL/REC
button to advance the number; use the
MAX/MIN
button to decrease the number.
4. To
edit month
: press the A/C button again to enter the
edit month
mode; use the
LEVEL/REC
button to advance the number; use the
MAX/MIN
button to decrease the number.
5. To
edit year
: press the A/C button again to enter the edit year mode; use the
LEVEL/REC
button to advance the number; use the
MAX/MIN
button to decrease the number.
6. To exit setup mode and save your setting, press the
HOLD
button once.
7.
Note
: if you continue to press the
A/C
button in edit mode, the initialisation/reset screen is
displayed; if your press the
A/C
button again your previous settings will be lost and the display
reverts to the original factory settings.
Operation
3
2
www.lasertools.co.uk
www.lasertools.co.uk
