Shure Incorporated
2/5
Switch Function
Rotary Knob Position
On/Off (Button remains down until depressed a sec
ond time)
Locking
PushToTalk (Button remains down only while de
pressed)
Momentary
Locking the Switch Button Down
The switch button can be locked down by following these steps:
1. Turn the rotary knob to Locking.
2. Press the switch button down.
3. 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
1. 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.
2. For one 6.4 mm diameter cable (0.25 in.), crimp the strain relief to the cable making sure the eyelet is toward
the raw end of the cable. Leave enough raw cable above the strain relief to permit soldering the individual con
ductors to the switch terminals.
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.
3.
Solder the conductors to the switch terminals to obtain the desired function (see Figure 3 for switch configura
tion.) Take care not to leave long bare conductors that may bridge across terminals and make unintended con
nections.
When the switch is used to make connections in the middle of a cable run, it is very important to preserve conti
nuity 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 discontinuous may cause unde
sirable hum in a circuit.
4. 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)
5. Insert the flange in the flex relief into the slot between the case bottom and the small horizontal projection.
6. 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.
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.
