Model 407764 Version 1.4 December 2004
2
Specifications
Applicable Standards
IEC651 Type 2, ANSI S1.4 Type 2
Accuracy
±1.5dB (under reference conditions)
Frequency range
31.5Hz - 8KHz
Measuring level
30 - 130dB
Frequency weighting
A and C
Microphone
0.5” Electret condenser microphone
Display
4-digit
LCD
Resolution:
0.1dB
Display period: 0.5 sec.
Bargraph
50dB scale (1dB steps). Display period: 50mS; Auto-ranging:
100dB scale, 2dB steps
Sampling rate
50mS
Memory size
16,000 records / 255 sets (non-volatile memory)
Datalogging sample rate
1 to 86,400 seconds per record
Time weighting
FAST: 125mS, SLOW: 1 sec.
MAX
Maximum reading held
Level ranges
30-80dB, 40-90dB, 50-100dB, 60-110 dB, 70-120dB, 80-130dB
(Total of 6 ranges)
Auto range
30 to 130dB
Linearity range
50dB
Alarm function
OVER indicator for readings higher than high limit.
UNDER indicator for readings lower than low limit.
AC output
0.707 Vrms at Full Scale
Output impedance approx. 600
Ω
DC output
10mV / dB
Output impedance approx. 100
Ω
Power supply
Four 1.5V ‘AA’ batteries
Battery life
Approx. 30 hrs continuous operation
AC adapter
Voltage: 6VDC
Voltage Ripple: < 100mVpp
Supply Current: > 100mADC
Socket: Pin Ground
Casing:
Positive
External Diameter: 3.5mm
Operating temperature
32 to 104
o
F (0 to 40
o
C)
Operating humidity
10 to 80%RH
Storage temperature
14 to 140
o
F (-10 to 60
o
C)
Storage humidity
10 to 80%RH
Memory size
16,000 data records with Date and Time Stamping
RS-232 Interface
Baud rate: 9600bps
Dimensions
10.4 x 2.8 x 1.4” (265 × 72 × 35mm
Weight
Approx. 11.5 oz. (358g) including battery
Accessories
Batteries, carrying case, screwdriver, windscreen, 3.5mm plug, RS-232
cable , 9- to 25-pin gender changer, Windows
TM
compatible software.
Safety symbols
Meter is protected throughout by double insulation or reinforced
insulation.
CE
Complies with EMC
