Sony ECM-999 Service Manual

EGM-999/999PR
SERVICE MANUAL
SPECIFICATIONS
General
Type
Microphone output connector
Microphone cord
Battery
Dimensions
Mass
Supplied accessories
Performance
Frequency response
Directivity
Output impedance
Sensitivity(directive angle 120°)
Power requirements
Noise level
One-point stereo(employing the Mid-Side system), electret
condenser microphone(with back-electret condenser capsules)
Cannon XLR-5-12C type
(Pin connection: 1.Shield 2.L ch.hot 3.L ch.cold 4.R ch.hot
5.R ch. cold) ,
Parallel two core shielded, OFC(Oxgen free copper)
With Cannon type connector
Length: Approx. 5m
R6 (size AA) battery
40 x 246 mm (Outside diameter x length)
(1 5/2 x 9 5/ inches)
Approx. 385 g (13.5 0z)(including battery)
Wind screen (1)
Microphone holder (1)(PF'/2 screw)
Microphone cord (1) .
Adapting cord OFC(Oxygen free copper)
Length: Approx. 50 cm (2) (ECM-999 only)
Microphone stand screw adapter SAD-35 (1), SAD-34 (1)
Carrying case (1)
Operating instructions (1)
20 - 20,000 Hz (See the illustration [A].)
Mid-Side stereo system
Directive angle : 0° to 150° continuously variable
(See the illustration 'B})
480 ohms +20%, balanced
Open circuit output voltage level': -48 +3dB
Effective output level*? : -50.8 +3dBm
Difference between L and R channel sensitivity: Less than 3dB
*1 OdB = 1V/Pa, 1,000Hz (1Pa = 10 bar = 94dBsrt)
°2 0dBm = imW/Pa, 1,000Hz
Recommended load impedance : More than 3 kilohms
Normal operating voltage :1.5 V, R6 (size AA) battery
Minimum operating voltage : Approx. 1 V
Battery life : Approx. 80 hours with a Sony R6P (size AA)
battery
Signai-to-noise ratio : More than 68 dB(1,000 Hz, 1Pa)
Inherent noise
(Converted to the equivalent input sound !evel)*?
: Less than 26 dBspt
Wind noise (With wind screen)"*: Less than 50 dBset
Induction noise from external magnetic field"*
: Less than 10 dBset
°3 OdBsm =2x 10°Pa
°4 Wind noise is the value measured by applying a wind velocity of
2ms (6.6 ft/s) from ail directions to the microphone. The mean
value is taken and converted to the equivalent input sound
level. .
"5 The external magnetic field induction noise is measured with
the microphone placed in an altemating magnetic field of 50 Hz,
1x 10°'T. The maximum noise value is taken and then
converted to the equivalent input sound level.
Maximum sound pressure input level
Dynamic range
Operating temperature
Storage temperature
Optional accessories
Plug adaptor
More than 130 dBspr (at 1,000 Hz, 1% distortion)
More than 104 dB
0 °C to 40 °C (32 °F to 104 °F)
— 20 °C to +60 °C (-4 °F to +140 °F)
PC-201M (Miniplug «> Phone jack)
PC-58S (Stereo miniplug «= Phone jack x 2)
Design and specifications are subject to change without notice.
US Model
Canadian Model
AEP Model
E Model
ECM-999
US Model
E Model
ECM-999PR
Features
* The Mid-Side system' is employed to give excellent sound image and faithful stereo
sound reproduction with less "hole in the middle".
¢ The directive angle between the left and right channels can be changed progressively
from 0° (monaural) to 150° according to the sound source.
* Electret condenser microphone with back-electret condenser capsules permits good
sound pick up.
* Mid-Side system
The sum of signals of the mid microphone unit (uni-directional) and side microphone unit (bi-
directional) and the difference between them are used for R and L channels respectively.
ELECTRET CONDENSER
STEREO MICROPHONE
SON Y.