Shure A120S Handleiding


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A120S In-Line Switch User Guide
GENERAL
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 microphone 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 double-pole double-
throw type for maximum versatility. Its push button combines
with a rotary knob to provide either spring-return momentary
or locking 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
Switch Function Rotary Knob Position
On/Off (Button remains down
until depressed a second time)
Push-To-Talk (Button remains
down only while depressed)
Locking
Momentary
Locking the Switch Button Down
The switch button can be locked down by following these
steps:
Turn the rotary knob to Locking.
Press the switch button down.
Turn the knob to Momentary.
The button will remain locked down until the knob is returned
to locking and the button is depressed again.
SWITCH INSTALLATION AND WIRING
For thicker cable (e.g., one 6.4 mm [0.25 in.] diameter
cable or two 3.8 mm [0.15 in.] diameter cables), cut
off the bottom of the flex relief at the rib. For narrower
cable (e.g., one 2.3 mm [0.39 in.] diameter cable),
use the entire flex relief as supplied. Thread the cable
(s) through the flex relief.
1.
2.
3.
1.
THICKER OR MULTIPLE
CABLES
SINGLE NARROWER
CABLE
FLEX RELIEF
FIGURE 1
For one 6.4 mm diameter cable (0.25 in.), crimp the
strain relief to the cable making sure the eyelet is to-
ward the raw end of the cable. Leave enough raw
cable above the strain relief to permit soldering the
individual conductors to the switch terminals.
NOTE: For all other cables, loosely knot the cable above
the flex relief to form a strain relief. Leave enough raw
cable above the knot to permit soldering the individual
conductors to the switch terminals.
KNOTTED STRAIN RELIEF
6.4 mm (0.25 in.) CABLE
STRAIN RELIEF FOR ONE
FOR OTHER CABLES
FIGURE 2
2.
SHURE Incorporated http://www.shure.com
United States, Canada, Latin America, Caribbean:
5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.
Phone: 847-600-2000 U.S. Fax: 847-600-1212 Int’l Fax: 847-600-6446
Europe, Middle East, Africa:
Shure Europe GmbH, Phone: 49-7131-72140 Fax: 49-7131-721414
Asia, Pacific:
Shure Asia Limited, Phone: 852-2893-4290 Fax: 852-2893-4055
Solder the conductors to the switch terminals to
obtain the desired function (see Figure 3 for switch
configuration.) Take care no to leave long bare
conductors that may bridge across terminals and
make unintended connections.
NOTE: When the switch is used to make connections in the
middle of a cable run, It is very important to preserve continuity
in the cable shield. If a splice is necessary for this, be sure it is
insulated from other terminals, or you may employ an unused
switch terminal to make the connection. Leaving the shield dis-
continuous may cause undesirable hum in a circuit.
TERMINAL SIDE OF SWITCH
FIGURE 3
Assemble the switch by inserting the tab on the
bottom back of the switch into the slot in the upper
case front. (See Figure 4)
Insert the flange in the flex relief into the slot be-
tween the case bottom and the small horizontal
projection.
If the strain relief is used, align its hole with the hole
in the center boss in the lower case front. Align the
cable to one side of the boss.
NOTE: If the cable is knotted to provide a strain relief, the center
boss in the case may be inserted through the center of the knot
with the cable lying to the side of the boss.
3.
4.
5.
6.
ASSEMBLING THE SWITCH
FIGURE 4
Use the three provided thread-forming screws to fas-
ten 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 center back of the case.)
7.


Product specificaties

Merk: Shure
Categorie: Niet gecategoriseerd
Model: A120S

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