Shure Unidirectional Dynamic Base Station 522 دليل المستخدم

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Model 522 User Guide
IMPEDANCE SELECTION
Use the switch located on the under side of the microphone
base, near the cable entry, to select high or low impedance. The
microphone is shipped with the switch in the “HI” position.
Use the low-impedance position for long cable lengths under
conditions of severe hum disturbance. Unlimited cable lengths are
possible without appreciably affecting response or level. Use
Shure Model A95 Series Line Matching Transformers when using
a low-impedance micr

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determine the presence of signals below the squelch threshold be- Switch fore transmitting. The Monitor switch is either momentary or lock- Press-to-Talk Switch - locking or nonlocking operation to ing; and the switch can be wired either to ground or to unground actuate microphone circuit and an external relay or control circuit. Microphone circuit normally shorted in both high and low the squelch circuit. The Transmit switch bar can be depressed only impedance while the Monitor bar is depress