ECM-R300
US Model
AEP Model
SERVICE MANUAL
ELECTRET CONDENSER MICROPHONE
MICROFILM
SPECIFICATIONS
General
Type
Electret condenser microphone
Output plug
L-shaped mini plug
Microphone cord
1.5 mm dia., single cord (shielded)(1.2 m[3.9 feet] long)
Dimensions
Approx. 66
×
66
×
26 mm (w
×
d
×
h)(2
5
/
8
× 2
5
/
8
×
1
1
/
16
in.)
Mass
Approx. 60 g (2.1 oz.)(including battery)
Performance
Frequency response 100 -12,000 Hz
Directivity
Omnidirectional
Output impedance
2.8 K
Ω
Sensitivity
Open circuit output level *
ON : -44 dB ± 3.5 dB
nR-LOW : -38 dB ± 4 dB
nR-HIGH : -44 dB ± 4 dB
*
0 dB = 1V/Pa, 1,000 Hz
Power requirements one R6 (size AA) battery
Battery life : Approx. 20 hours with Sony R6P (SR) battery
Approx. 70 hours with Sony alkaline LR6 (SG) battery
0
°
C to 40
°
C (32
°
F to 104
°
F)
-20
°
C to 60
°
C (-4
°
F to 140
°
F)
Design and specifications are subject to change without notice.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
1
Battery-check indicator
2
Power/nR (noise-reduction) switch
3
L-shaped mini plug
4
Microphone
5
Plug holder
6
SENS (microphone sensitivity) selector
7
Spiral groove (for storing the microphone cord)
SECTION 1
GENERAL
This section is extracted
from instruction manual.
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
2007.04.30
QQ :376315150
手机:13942296513
