Broadcast & Production AT8024 Installation And Operation

AT8024
Stereo/Mono Camera-Mount Microphone
Features
• Designed for use wrth DSLR and other video cameras, delivering
dramatically better sound quality than the camera's internal
microphone
• Selectable line-cardioid mono or mid-side stereo modes provide
the flexibility to capture high-resolution audio in any environment
• Three-position adjustable input pad and switchable low-frequency
roll-off
• Integral rubber shock mounts isolate the microphone from
vibration and mechanical camera noise
• Compact, lightweight design with integral shoe mount
Description
The AT8024 is a fixed-charge condenser microphone designed for use with DSLR
and other video cameras. The microphone offers the flexibility of mono and mid-
side stereo modes for high-resolution audio in any environment.
The microphone is powered by a included single 1.5V AA battery. The AA battery
provides optimal performance with high max SPL. A red/green LED power
indicator, located on the top of the unit, illuminates green when the microphone is
sufficiently powered and red when battery power is low. The AT8024 is equipped
with a three-position input pad that allows for attenuation adjustment. The
microphone also features an 80 Hz high-pass filter switch that permits choice of
flat response or low-frequency roll-off to reduce the pickup of undesired ambient
noise, room reverberation and mechanically coupled vibrations.
The microphone is enclosed in a rugged housing and includes an integral
shoe mount that fits most camera shoes. Two rubber shock mounts isolate
the microphone from vibration and mechanical camera noise. The microphone
includes a permanently attached cable with a 3.5 mm L -type stereo plug output. A
clip on the shoe mount holds the cable, relieving tension and preventing vibration
noise.
A windscreen and fuzzy windscreen are also included.
Installation and Operation
The mode switch located on the top of the unit allows user to select between
mono and internally matrixed mid-side stereo modes.
Mono Operation: In Mono mode, the microphone uses its line-cardioid element
exclusively to provide excellent off-axis rejection. This is ideal for recording
interviews, dialogues or sound sources that might otherwise be drowned out in
noisy environments.
Mid-Side Stereo Operation: In Stereo mode, the microphone provides internally
matrixed mid-side stereo, delivering wide, life-like stereo sound. Locating the
AT8024 nearer the sound source will enhance the apparent width of the stereo
image, while decreasing room ambience. Moving the microphone away from the
sound source will narrow the stereo image and provide more Mroom soundr The
Stereo mode is well-suited for sporting events and other active situations where
sonic realism is desired.
The integral shoe mount slides into the shoe of most cameras. Tighten the nut
on the shoe mount to hold the microphone securely in place. The shoe mount is
also equipped with a strain-relief clip for the cable. Insert the cable into the clip to
reduce wear on the cable and eliminate noise from cable vibration.
To install the battery, press the PUSH button located on the side of the unit. This
will eject the battery compartment. Insert a 1.5V AA battery according to the
polarity markings in the compartment, then press the compartment back into the
body of the unit so that it clicks closed. When the mode switch is moved from
the Off position to Mono or Stereo, the LED power indicator will illuminate green,
showing that the microphone has power. Replace or recharge the battery when
the LED illuminates red.
The attenuation can be adjusted by using the three-position input pad switch (-20
dB, -10 dB, 0 dB) located on the top of the unit. Adjust according to the volume of
the sound source: -20 dB for the loudest sounds, 0 dB for the softest. The 80Hz
high-pass filter switch is located along side the input pad switch. To engage the
high-pass filter, slide the switch toward the "bent" line.
Since even slight or unexpected winds can adversely affect audio recordings, it is
best to use the microphone with the supplied windscreen or, when recording in
especially windy environments, the supplied fuzzy windscreen.
Avoid leaving the microphone in the open sun or in areas where temperatures
exceed 43° C for extended periods. Extremely high humidity should also be
avoided.

Specifications

Element
Polar pattern
Frequency response
Low frequency roll-off
Open circuit sensitivity
(Mono & LR Stereo)
Impedance
Maximum input sound level
(Mono & LR Stereo)
Dynamic range (typical)
Signal-to-noise radio
Battery (included)
Switches
Weight
Dimensions
Output connector
Cable
Accessories furnished
polar pattern
LR stereo
0°
330° 30° 330°
300° 60° 300°
270° 90° 270°
120°
240° 240°
210° 150° 210°
180°
SCALE IS 5 DECIBELS PER DIVISION SCALE IS 5 DECIBELS PER DIVISION
LEGEND LEGEND
1 kHz 1 kHz 1 kHz
LEFT RIGHT
frequency response: 40~15,000 Hz
50 100 200 500 1k 2k
Frequency in Hertz
12" or more on axis
LEGEND
Roll-off
Fixed-charge back plate,
permanently polarized condenser
Line-cardioid, LR stereo
40 - 15,000 Hz
80 Hz, 12 dB/octave
–37 dB (14.1 mV) re 1V at 1 Pa
50 ohms
128 dB SPL, 1 kHz at 3% T.H.D.;
148 dB SPL, with 20 dB pad
Mono: 106 dB, 1 kHz at Max SPL;
Stereo: 104 dB, 1 kHz at Max SPL
Mono 72 dB, 1 kHz at 1 Pa;
Stereo 70 dB, 1 kHz at 1 Pa
Type: One 1.5V AA; Life: 100 hours typical
Mono, M-S Stereo; Three-position input pad;
Flat, roll-off
114 g
172.5 mm long, 24.0 mm maximum body diameter
3.5 mm stereo mini-plug on cable
Permanently attached 0.2m -1m coiled cable
with right-angle molded 3.5 mm stereo mini-plug
at output end
Windscreen; Fuzzy windscreen; AA battery
Mono
0°
30°
60°
90°
120°
150°
180°
10 dB
5k 10k 20k
Machida • Tokyo • Japan
FORM No. ATGC-L0324-14-E