Instrukcja obsługi Shure 577B

Shure mikrofon 577B

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Model 577B User Guide
27C1128 (Rev. 5) Printed in U.S.A.
©2013 Shure Incorporated
TABLE 1. CABLE-TO-CONNECTOR WIRING
INPUT TYPE WIRE
COLOR
FUNCTION XLR
CONNECTOR
1/4 IN.
PHONE
PLUG
BALANCED
WHITE AUDIO+ PIN 2 TIP
GREEN AUDIO – PIN 3 RING
SHIELD CHASSIS
GROUND
PIN 1 SLEEVE
UNBALANCED
WHITE AUDIO -- TIP
GREEN AUDIO
GROUND
-- SLEEVE
SHIELD CHASSIS
GROUND
-- SLEEVE
NOISE-CANCELING HANDHELD DYNAMIC MICROPHONE
GENERAL
The Shure Model 577B SONOBAR® Microphone is a handheld dynamic
microphone designed for communications and paging applications that
require highly intelligible, low noise output. It can be used in all types of
mobile communications, from amateur radio to helicopter news and traffic
reports. It is also suitable for public address and paging systems in noisy
areas such as factories, airport terminals, and restaurants.
The 577B represents a significant improvement over most microphones
with anti-noise features. Shaped frequency response, directionality,
and distant sound discrimination contribute to total noise reduction. The
microphone operates on the pressure-gradient principle and has two sound
entry ports spaced a small distance apart.
The modular design of the 577B greatly facilitates field servicing. The
cartridge, switch, and cable can be replaced in a matter of minutes, if
necessary.
The 577B is built to withstand mechanical shocks, vibration, high
temperatures, and humidity. The exclusive ARMO-DUR
® case is impervious
to oil, grease, fumes, salt spray, sun, and corrosion. he “Million-Cycle”
press-to-talk switch ensures years of reliable service.
A mounting bracket is supplied to provide convenient hang-up when the
microphone is not in use.
Features
• Frequency response tailored for close-talk operation
• Extremely effective noise cancellation
• Dynamic microphone cartridge
• Modular design
• “Million-cycle” leaf-type press-to-talk switch
• TRIPLE-FLEX® cable provides three to four times the flex life of
most coiled cords
• Rugged ARMO-DUR® case
• Built-in hang-up button and supplied mounting bracket
OPERATION
For optimum performance and maximum rejection of background noise,
place your upper lip against the lip guard, approximately 25 mm (1 in.)
from the grille. Hold down the push-to-talk button while talking normally.
INTERNAL CONNECTIONS
The 577B is a balanced-line, low-impedance dynamic microphone. It is
designed for direct connection to low-impedance microphone inputs and/
or installations where long cable lengths are needed. It includes a four-
conductor (two conductors shielded) coiled-cord cable and a double-pole,
single-throw, leaf-type switch. The WHITE and GREEN leads are the “hot”
audio conductors; the shield is connected to microphone circuit ground. The
RED and BLACK leads control the switch circuit. The microphone circuit
is open when the switch is open, but can be easily modified for normally
shorted operation. Refer to Figure 1.
WHITE
INTERNAL CONNECTIONS
FIGURE 1
www.shure.com
Asia, Pacific:
Shure Asia Limited
22/F, 625 King’s Road
North Point, Island East
Hong Kong
Phone: 852-2893-4290
Fax: 852-2893-4055
Email: info@shure.com.hk
United States, Canada, Latin
America, Caribbean:
Shure Incorporated
5800 West Touhy Avenue
Niles, IL 60714-4608 USA
Phone: +1-847-600-2000
Fax: +1-847-600-1212 (USA)
Fax: +1-847-600-6446
Email: info@shure.com
Europe, Middle East, Africa:
Shure Europe GmbH
Jakob-Dieffenbacher-Str. 12,
75031 Eppingen, Germany
Phone: +49-7262-92490
Fax: +49-7262-9249114
Email: info@shure.de
CIRCUIT MODIFICATION
To modify the microphone circuit for normally shorted operation, proceed
as follows:
1. Remove the three No. 6 Phillips screws from the back of the
microphone case.
2. Separate the front and back sections of the case, and remove the
press-to-talk switch button.
3. Unsolder or clip the GREEN cable lead from the press-to-talk
switch solder lug.
4. Solder the GREEN cable lead to the GREEN cartridge lead on
the press-to-talk switch solder lug.
5. Replace the press-to-talk switch button in the front section of the
case, then join the case halves together and install the No.
6. Phillips screws removed in Step 1 above.
SPECIFICATIONS
Type
Dynamic, noise-canceling
Frequency Response
100 to 5,000 Hz (see Figure 2)
20 20000 1000 10000 50 100
9 8 7 6 5 4 3 2 9 8 7 6 5 4 3 2
+10
0
–10
Hz
B d
TYPICAL FREQUENCY RESPONSE
FIGURE 2
Impedance (at 1000 Hz)
Rated at 150 Ω (175 Ω actual) for connection to microphone
inputs rated at 19 to 300 Ω.
Output Level (at 1,000 Hz, 5/16 in.)
Open Circuit Voltage-66.0 dBV/Pa (0.5 mV)
0 dB = 1 volt per 1 Pascal/94 dB SPL
Hum Sensitivity
Equivalent to 32 dB SPL in 1 millioersted field
Operating Temperature Range
-40° to 74° C (-40° to 165° F)
Switch Type
Double-pole, single-throw, leaf-type, push-to-talk
Cable
Non-detachable. 1.8 m (6 ft), neoprene-jacketed coil cord,
four-conductor (two conductors shielded).
Case
Two-tone gray, high-impact ARMO-DUR®
Net Weight
330 grams (11.6 oz)
Dimensions
See Figure 3
MICROPHONE
MOUNTING BRACKET
46 mm
36.5 mm
4.7 mm
34.5 mm
10.3 mm
9.5 mm
9.1 mm
(23/64 IN.)
(3/8 IN.)
(1-13/16 IN.)
(1-7/16 IN.)
(3/16 IN.)
(1-23/64 IN.)
(13/32 IN.)
MO TI G ES,UN N HOL
CLEARANCE FOR
No. 8 SCREWS
67 mm
(2-5/8 IN.)
94 mm
(3-11/16 IN.)
45 mm
(1-25/32 IN.)
8 mm
(5/16 IN.)
14 mm
(9/16 IN.)
41 mm
(1-19/32 IN.)
19 mm
(3/4 IN.)
18 mm
(23/32 IN.)
4.8 mm
(3/16 IN.)
OVERALL DIMENSIONS
FIGURE 3
CERTIFICATION
Eligible to bear CE Marking. Conforms to European EMC Directive
89/336/EEC. Meets applicable tests and performance criteria in European
Standard EN55103 (1996) parts 1 and 2, for residential (E1) and light
industrial (E2) environments.
SUPPLIED ACCESSORY
Mounting Bracket (3 per kit)
REPLACEMENT PARTS
Cartridge R98B
Cable C117
Switch RK338S
SERVICE INFORMATION
For additional service or parts information, please contact Shure's Service
department at 1-800-516-2525. Outside the United States, please contact
your authorized Shure Service Center.

Specyfikacje produktu

Marka: Shure
Kategoria: mikrofon
Model: 577B

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