Shure 522 User Manual

MODEL 522
BASE-STATION MICROPHONE
The Model 522 is a dynamic base-station microphone for radio
communications, paging, and
(unidirectional) pickup pattern suppresses unwanted background noise
from nearby dispatchers, ventilating equipment, or office machines.
It also can reduce feedback in public address paging applications.
Features
Dual impedance (19 to 300 ohms or High)
•
lmpedance change switch for convenient change-over
•
Finger-tip control bar (locking or non-locking action) to actuate
•
microphone circuit and an external relay or control circuit
Long-life switch to satisfy rigorous requirements of
•
communications and paging systems
Sturdy, high impact ARMO-DUR
•
Adjustable microphone height
•
Dependable under most operating conditions
•
PRESS-TO-TALK SWITCH OPERATION
Press and hold the bar switch to talk. To lock the switch, press and pull it
forward. To unlock the switch, move the bar back and release.
IMPEDANCE SELECTION
Use the switch located under the microphone base, near the cable entry,
to select high ("HI") or low ("LO") impedance.
Use the low-impedance position for long cable lengths under conditions
of severe hum disturbance. Use Shure Model A95 Series Line Matching
Transformers when using a low-impedance microphone line with a high-
impedance amplifier input.
LOGIC CONNECTIONS
The RED and BLACK leads may be used to control an external relay or
switching circuit.
27C687 (Rev. 6)
©2012 Shure Incorporated
dispatching systems. Its
‚ base and microphone case
®
AUDIO CONNECTIONS
Unbalanced high-impedance operation:
Set the impedance switch to the "HI" position (as shipped). Connect the
GREEN cable lead and the shield to the amplifier chassis ground. The
WHITE cable lead is the "hot" conductor.
Balanced-line low-impedance operation:
Set the impedance switch to the "LO" position. Connect the shield to the
amplifier chassis ground. The WHITE and GREEN cable leads are the
"hot" conductors.
Table 1. Cable-to-Connector Wiring
INPUT TYPE
UNBALANCED
BALANCED
cardioid
Model 522 User Guide
WIRE FUNCTION
COLOR
CONNECTOR
WHITE AUDIO PIN 2
GREEN AUDIO PIN 3
GROUND
SHIELD CHASSIS PIN 1
GROUND
WHITE AUDIO + PIN 2
GREEN AUDIO – PIN 3
SHIELD CHASSIS PIN 1
GROUND
XLR 1/4 IN.
PHONE
PLUG
TIP
SLEEVE
SLEEVE
TIP
RING
SLEEVE
Printed in U.S.A.