Shure A120S Quick Start Manual

Talk switch

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A120S -- Talk Switch

General Description

The A120S Accessory in-Line Switch can be used

to add an On/OFF, Push-To-Talk, Cough Button,

or Transmitter-Relay Keying function to a micro-

phone or other device rated at up to 3 amps ac

(0.5 Adc) 125V, non-inductive load. The switch

has gold-plated contacts for reliable performance

even in low-current circuits. The switch is a dou-

ble-pole doublethrow type for maximum versatili-

ty. Its push button combines with a rotary knob to

provide either spring-return momentary or lock-

ing action.

The unit is supplied with a crimp-on strain relief

tor 6.4mm (0.25-in.) diameter cable and with a flex

relief for either large or small diameter cables.

The permanently attached belt clip can be rotated

on the case to any of four positions for the most

convenience in use.

Operation

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Page 1 A120S -- Talk Switch General Description The A120S Accessory in-Line Switch can be used to add an On/OFF, Push-To-Talk, Cough Button, or Transmitter-Relay Keying function to a micro- phone or other device rated at up to 3 amps ac (0.5 Adc) 125V, non-inductive load. The switch has gold-plated contacts for reliable performance even in low-current circuits.
Page 2 Shure Incorporated Switch Function Rotary Knob Position On/Off (Button remains down until depressed a sec Locking ond time) PushToTalk (Button remains down only while de Momentary pressed) Locking the Switch Button Down The switch button can be locked down by following these steps: 1.
Page 3 Shure Incorporated 7. Use the three provided thread-forming screws to fasten the case back to the case front, making sure not to pinch any leads. (If the strain relief is used, make certain that it is captured by the screw through the lower cen...
Page 4 Shure Incorporated FIGURE 2: FIGURE 3: TERMINAL SIDE OF SWITCH...
Page 5 Shure Incorporated FIGURE 4: ASSEMBLING THE SWITCH...