Operation Manual

DRAFT
System 9 Installation and Operation
7
4
3
2
1
For future reference, please record your system information here. The serial number
appears inside the battery compartment in each transmitter, and on the bottom of each
receiver.
Receiver
Model ATW-R900 Serial Number
Transmitter
Model ATW-T90 Serial Number
1/2
OVERALL SYSTEM
Operating Frequency VHF highband, 169 MHz to 172 MHz
Modulation Mode FM
Maximum Deviation ±10 kHz
Dynamic Range ≥90 dB (A-weighted), typical
Total Harmonic Distortion <1% (at 1 kHz, ±10 kHz deviation)
Operating Range 200' (60 m) typical
Open range environment with no interfering signals
Operating Temperature Range 40° F (4° C) to 110° F (43° C)
Battery performance may be reduced at
very low temperatures
Frequency Response 80 Hz to 13 kHz
RECEIVER
Receiving System Non-diversity, single-channel,
dual antenna system
Image Rejection 50 dB minimum
RF Sensitivity 20 dBuV at 60 dB S/N ratio
(50 ohms termination)
Normal Output Level 700 mV (1 kHz modulation, 10 kHz
1
/
4
" (6.3 mm), unbalanced: deviation, 100k ohm load)
Power Supply 100-240V AC (50/60 Hz) to 12V DC .5A
(center positive) switched mode external
power supply
Dimensions 7.48" (190.0 mm) W x 1.82" (46.2 mm) H x
5.06" (128.5 mm) D
Net Weight 11.8 oz (335 grams)
Accessories Included Power supply
UNIPAK
®
TRANSMITTER
RF Output Power 10 mW
Spurious Emissions Following federal and national regulations
Input Connection Four-pin Locking Connector
Pin 1: GND, Pin 2: INST INPUT,
Pin 3: MIC INPUT, Pin 4: DC BIAS +9V
Batteries (not included) Two 1.5V AA Alkaline
Battery Life 8 hours (alkaline)
Depending on battery type and use pattern
Dimensions 2.76" (70.2 mm) W x 4.08" (103.7 mm) H
x 0.98" (24.9 mm) D
Net Weight (without battery) 3.0 oz (84.5 grams)
HANDHELD TRANSMITTER
RF Output Power 10 mW
Spurious Emissions Following federal and national regulations
Batteries (not included) Two 1.5V AA Alkaline
Battery Life 8 hours (alkaline)
Depending on battery type and use pattern
Dimensions 9.91" (251.8 mm) long,
2.11" (53.5 mm) diameter
Net Weight (without battery) 9.2 oz (260 grams)
Accessory Included AT8456a Quiet-Flex
™
stand clamp
†
In the interest of standards development, A.T.U.S. offers full details on its test methods to
other industry professionals on request.
Specications
System Operating Frequencies
System Operating Frequencies
Each transmitter/receiver system operates on a choice of four switch-
selected frequencies. Available frequencies are shown below. All
frequencies may be combined for up to 4 simultaneous operating
channels.
Traveling frequencies normally work anywhere in the USA and Canada.
Not all frequencies available in all areas outside the US. Please check
with local regulations.
System 9 Operating Frequencies (Channels)
Channel Frequency – MHz
1 169.505
2 170.245
3 171.045
4 171.905
RF Interference
Please note that wireless frequencies are shared with other radio ser-
vices. According to Federal Communications Commission regulations,
“Wireless microphone operations are unprotected from interference
from other licensed operations within the band. If any interference is
received by any Government or non-Government operation, the wireless
microphone must cease operation...”
If you need assistance with operation or frequency selection, please
contact your dealer or the Audio Solutions at Audio-Technica U.S.
Extensive wireless information also is available on the A-T Web site at
www.audio-technica.com.