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Sony ECM-969 Service Manual
Sony ECM-969 Service Manual

Sony ECM-969 Service Manual

Electret condenser microphone

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GENERAL
Battery:
Microphone Cutput
Terminal:
Dimensions:
Weight:
Finish:
PERFORMANCE
Directivity:
ae
Frequency Response
Output impedance:
Output Level!
(deviation +3 dB)
=*
Power Requirements:
Electret condenser microphone
(with back-electret condenser)
Sony junction FET
Penlight battery
Size AA (IEC Designation-R6)
SONY SUM-3 (Manganese)
Cannon
XLR-5-12C
40mm dia. x 245mm
15/, inch dia. x 93/, inches
272g, 9.6 oz (including battery)
Metallic qray finish
Variable
AQ Hz to 20,000 Hz
600 2 +20 %, balanced
Open circuit voltage":
600 2: -70.0 dB (0.282 mV)
*Q dB =1mW/10ubar at 1,000 Hz
Recommended
load impedance is more
than 3kQ2.
Normal operating voltage: 1.5 V DC
Minimum operating voltage: 1.1
V DC
Current drain: Less than 8.0 mA
Battery life: Approx. 100 hours with
EVEREADY-No:
1015,-SONY: SUM-3
way
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Maximum
Sound
Pressure Input Level:
(at 1,000 Hz,
1% distortion)
Dynamic Range:
Environmental
Temperatures:
Signal-to-noise ratio;
More than 44 dB (1,000 Hz, tubar)
inherent noise; Less than 30dB SPL
(O0dB=2x 10% ubar) wind noise *1:
(with the wind screen)
Less than 45 dB SPL
Induction noise from external magnetic field
*2: Less than 5 dB SPL/m gauss
et
Wind
noise is the vaiue measured
by ap-
plying a wind velocity of 2 m/sec. from
all directions
to the microphone.
The
mean
value
is taken
and
converted
to
the equivalent input sound level.
*9 The
external
magnetic
field
induction
noise
is measured
with
the microphone
placed in an alternating magnetic field of
5OHz,
1.
milligauss.
The
maximum
noise value is taken and the converted to
the equivalent input sound level.
(OdB =2x 10% ubar)
130 dB SPL (0dB =2x 10% ubar)
More than 100 dB
-20°C to +60°C for storage
O°C to +60°C for operation

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