DM Engineering Mic Pro User manual

USER GUIDE
DM Engineering Mic Pro
Microphone ON/OFF Lighted Pushbutton Module
Version 1.2
DMEngineering
2174 Chandler St.
Camarillo, CA 91345-4611
805-987-7881 800-249-0487
www.DMEngineering.com

Overview:
The DM Engineering “Mic Pro” module consists of high reliability LED lighted "MIC
ON" and "MIC OFF" buttons, enclosure and connecting cables, and when combined
with the DM Engineering SLAVE Studio Relay Pack or any other relay pack with
required outputs (see below), will upgrade a low cost production mixing board to
have the microphone switching features of a professional broadcast console. The
"MIC ON" and "MIC OFF" buttons enable and disable the mic channel(s) so the mic
level control(s) can be left at the optimum settings. More than one Mic input can be
controlled simultaneously. Monitor speaker muting and "ON AIR" or "RECORDING"
signs are controlled the SLAVE relay pack. The MIC PRO is attached to the mixing
board with the supplied hook and loop fastener system or double sided tape (for a
more permanent solution), as shown below.
Operation:
Pressing the “MIC ON” button activates the relay pack in a latched on condition.
Pressing the “MIC OFF” button deactivates the relay pack.
(Speaker muting, lighting of “Recording” or “On Air” signs and control of any
other devices is accomplished by the relay pack. Instructions for speaker muting
are given here.)
Relay Pack Required Inputs/Outputs:
Note: The Studio Slave Relay Pack uses a mini-din connection between the Mic Pro
and itself, and has all of the necessary voltage inputs and outputs provided and relay
contacts available. Other relay packs will require the following:
9-12VDC capable of 35ma
2 SPDT (form C) sets of available relay contacts, (4 sets if speaker muting is
desired)
Latching On and Off inputs
Installation:
1. Clean the side of the mixing board where the “Mic Pro” and cable anchors
are to be located with the supplied alcohol swab.
2. Attach the “Mic Pro” module to the side of the mixing board where desired
using either the permanent adhesive squares or the Velcro fasteners.
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Route the control cable along the side of the board and secure with the
supplied cable ties and anchors.
3. Remove power from the relay pack and attach the “Mic Pro” control cable to
the Studio SLAVE Relay Pack mini-din input connector:
4. If you are using another type of relay pack cut off the mini-din connector,
strip back the cable insulation about 4 inches, strip and tin the ends of the
wires and connect the wires as follows:
a. Red wire to 9-12VDC
b. Black wire to power common
c. Green to relay 1 common
d. Yellow to relay 1 NO
e. Orange to relay 1 NC
f. Grey to any input common
g. Blue to Latch ON
h. White to Latch OFF
i. The pink, beige and brown wires are not used and may be cut off.
5. Attach the supplied Insert control cable to the relay pack as follows:
a. Red wire to relay 3 NC (mic preamp output-tip)
b. Black wire to relay 3 common (line level input to board-ring)
c. Blue wire to relay 3 NO (1K resistor network to shield within cable)
Note: If your board Insert connector is wired differently swap the red
and black wires.
6. Connect the Insert control cable plug to the MIC 1 insert receptacle.
7. Connect other desired optional Insert control cables to successive relay
contact terminals as in step 4 and to their respective insert receptacles.
8. Connect Left channel monitor speaker muting as follows:
a. Connect board Left Control Room or monitor output high to relay 5 NC
b. Connect Left Monitor Amp in high to relay 5 common
c. Connect one end of a 620-680 ohm resistor to relay 5 NO
d. Connect the other end of the resistor to both the Left Control Room or
monitor output low and the Monitor Amp in low. This may involve
connecting the shields to this connection also. Test for ground loop
hum and add or remove the shields accordingly.
9. Connect the Right channel monitor speaker muting as shown in step 8 to
relay 6. Substitute Right for every mention of Left.
The use of the above resistors assures that the Monitor Amplifier is muted and
properly terminated during the “Mic On” condition to avoid any speaker noise. The
Insert Jack has the proper termination already installed within the cable.
Typical Wiring Connections to the Studio SLAVE Auxiliary Relay pack
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4
Warranty Information:
he DM Engineering Mic Pro is warranted for a period of one year from the date of
the y, and
echnical Support
If you have questions, experience difficulties with the product or require further
pecifications:
Case dimensions: 2.6" wide X 2.6" deep X 1.1" high
ith mini-din 8 connector k)
Supplied Materials:
“Mic Pro” module with 10 ft. control cable ctor and resistive termination included
tie anchors (2) r monitor speaker muting circuit connections
Note: Extra10ft. Insert Cables may be purchased separately by contacting DM
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purchase. This warranty covers materials and workmanship only. Any
misapplication, physical or electrical damage from outside sources or by
customer is not covered. The customer must pay shipping costs to the factor
DME will pay shipping costs to return the warranted equipment to the customer. Any
priority shipping costs are to be the responsibility of the customer as ground service
is standard. Please contact the factory for an RMA number prior to any returns.
Items returned without an RMA may be sent back to the customer unopened.
T
information please contact DME at: 805-987-7881, toll free 800-249-0487, or E-mail
technical support at: [email protected]m, or visit www.DMEngineering.com for
the latest User Guide.
S
Case material and color: Styrene plastic, light grey
Input connection method: 8 ft. black control cable w
DC input requirement: 9-12VDC @ 35ma maximum. (supplied by Relay Pac
Mounting: Hook and loop fasteners or double sided tape (supplied)
Operating temperature: 32 to 120F
Humidity: 0 to 95% non-condensing
Shipping Weight: 1 lb. (approximate)
One 10 ft. insert cable assembly with conne
Hook and loop fastener materials for removable installation
Double sided adhesive pads for non-removable installation
Alcohol swab
Cable ties and
620 or 680 ohm resistors (2) fo
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