Teachlogic Om-20 User manual

OM-20, r 2022.10.21 Page 1

User Guide: OM-20

TeachLogic’s Ovaon Handheld Microphone (OM-20) is a wireless mic that uses special DECT (Digital Enhanced Cordless

Telecommunicaons) radio technology to transmit crystal clear audio throughout your classroom. With its secure connecon,

robust design and simple to use features, the OM-20 is perfect for any classroom. Together with the compable TeachLogic

amplier/ receiver (the OA-50), you can be sure every student can accurately and eortlessly hear comments, quesons, and

answers from their fellow classmate no maer where they are in the classroom.

DIAGRAM 1: OM-20 Controls and Features

1. Logo Window and Indicator Light

2. Push to Talk (PTT) Buon

3. Power Buon ON / OFF

4. PTT ON / OFF Switch

5. USB-C Charging Port

6. Baery Compartment Cover

Boom View

OM-20, r 2022.10.21 Page 2

1. OC-20 USB-C Charging Dock

2. OM-10 Micro-USB Charging Dock

3. OM-10 Micro-USB Charging Dock

4. Micro-USB Power Port for OC-20

5. OC-20 Power Indicator Light

6. Charging Dock Indicator Lights

DIAGRAM 2: OC-20 Features and Indicator Lights DIAGRAM 3: Battery Orientation

DIAGRAM 4: Pairing Buttons

ab2. OM-20 Push to Talk (PTT) Buon

3. OM-20 Power Buon ON / OFF

a. OA-50 MIC A Pairing Buon

b. OA-50 MIC B Pairing Buon

Requires simultaneous

press and hold for 3 sec-

onds to enter pairing mode

or to un-pair.

1. Baery Shaped Space Filler (No Charge)

2. Rechargeable 3.7V Li-ion Baery Cell

Note that the blue space ller should be

inserted into the baery compartment

rst, followed by the rechargeable Li-ion

OM-20, r 2022.10.21 Page 3

Inial Setup

Baeries

• The OM-20 uses a special rechargeable Lithium-ion baery and a second baery-shaped space ller (a “dummy”) in the baery

compartment. The dummy does not hold a charge. It is important to use the dummy along with a single Li-ion baery to ensure

the mic is not overpowered. Do not install two Li-ion baeries. [Producon units will have a single cell only.]

• Only use a Lithium baery provided by TeachLogic. Do not use other Lithium baeries such as 1.5V-1.7V USB chargeable cells. Do

not use nickel metal hydride (NiMH) or alkaline baeries. The charging intelligence of the mic is designed for a single 3.7V Li-ion

cell.

• To install baery refer to Diagram 3: Baery Orientaon along with the following instrucons. Load the Li-ion cell and the dummy

in the baery compartment with the Li-ion cell’s posive (+) terminal towards the boom of the microphone. The dummy’s small

p end should point in the same direcon as the posive (+) terminal (contacng the Li-ion cell’s negave (-) end).

How to Charge your OM-20

 Baery Life: The OM-20’s baery life is approximately 8 hours of acve use on a full charge. If your mic baery is low, the mic

logo window will display a solid red light when it has 10% baery life remaining. When crically low (last 5% of baery life) the

red light will blink. Both indicate it is me to charge your mic.

 Baery Replacement: If you noce your OM-20 is no longer holding a sucient charge, it may be me to replace your baery.

For instrucons on how to replace your baery see “Baeries” secon above.

• There are two ways to charge your OM-20 mic, either use the TeachLogic Charging Stand (OC-20) or use the TeachLogic USB-C

charging block and cable (BRC-25), refer to Diagrams 2 and 3 along with the following instrucons.

• If using the Charging Stand (OC-20), ensure your mic is facing forward and gently lower it into the charging port. Gently press

down on the mic unl it clicks into place and the mic logo buon begins to blink green. The charging dock indicator light will

slowly blink blue under the mic that is charging, indicang that the OC-20 is providing charging power to the mic.

• It is very important to ensure that the mic is properly aligned in the charging port before exerng any “plug in” force. Very lile

force is needed when the mic is lined up properly. Forcing the mic into a charger when misaligned can break either the mic,

the charger, or both.

• Within a few hours, the mic will be fully charged and the logo buon on the mic will be solid green to indicate this . Soon

thereaer, the charger will stop providing power and the slow blinking blue light on the OC-20 charger will turn o. One hour

later, the mic will power o automacally.

• You can also charge your OM-20 with a separate USB-C cable by inserng the cable’s plug into the charging port on the boom

of your mic. If using this method, do not leave the cable plugged in for more than two days at a me or you will risk shortening

your baery’s life. If able, unplug it when fully charged which should take no more than six hours.

Note: The microphone will be powered on anyme it is connected to charging power, but it cannot be used to transmit audio

while charging.

Pairing Mic to Receiver - ChA or ChB

 What is Pairing? Since the OM-20 mic is compable with any OA-50, and there may be many of both products in your building, it

is important to associate your mic to the specic receiver in your classroom. This associang is called pairing. In pairing your OM-

20 and OA-50, you will be telling your mic to communicate with your specic receiver and not another down the hall.

 Choosing the right channel: On your OA-50, there are two channels to which you can pair with your microphone, A and B. Usually,

the teacher microphone will be paired as MIC A while the student microphone is paired as MIC B.

• To pair, both the mic and receiver (OA-50) will need to be in pairing mode. To do this, refer to Diagram 4 and the below

instrucons.

1) Press both the center PTT buon below the logo window and the power buon at the same me and hold both for 3 seconds.

• This will iniate the pairing mode for your microphone, and it will begin fast-ashing green. It will stay in this pairing mode

for 1 minute or unl paired.

2) During this me, press and hold the pairing buon on the OA-50 next to the MIC channel you’d like to pair with (or on the OP-

10 wall panel if installed) for 3 seconds.

• This pairing buon will illuminate and start fast-ashing green indicang it has entered the pairing mode. It will stay in this

pairing mode for 1 minute.

3) While both units are in pairing mode, they will search for each other and become paired. Once the pairing has been

established, the mic logo window will turn solid blue and the OA-50 pairing buon solid green. Your mic is now paired and

connected, ready to be used with your TeachLogic system.

OM-20, r 2022.10.21 Page 4

Pairing vs Connecng

• Pairing your mic and receiver creates a sustained link between the two. Your mic and OA-50 will each remember its pairing even

aer being turned o and on. The act of pairing does not need to be repeated each me you use your mic. Each mic and receiver

channel is paired to at most one other device.

• Connecng is when data transmits between the two paired devices. When connected, the two devices are communicang with

each other, allowing audio to be passed through and heard. Your mic will automacally connect to your OA-50 each me they are

both on.

Un-pairing your Mic

• You may wish to un-pair your mic from your receiver if you want to stop using your mic with that system. There are two methods.

1) To unpair your mic from your OA-50, press the center PTT buon below the logo window and the power buon at the same

me and hold both for 3 seconds.

2) Press the MIC A or MIC B pairing buon on OA-50 and hold for 3 seconds.

• The mic logo buon will turn yellow indicang it is not paired. It will stop transming audio. The OA-50 pair light will stop

illuminang.

Using your OM-20

Turning your Microphone On and O

• Tap the power buon located at the boom center of your mic to turn it on. The mic logo window light will briey ash green

then turn either solid blue (if paired) or solid yellow (if unpaired).

• To pair the OM-20 microphone to your OA-50 see “Pairing Mic to Receiver” above.

• To turn your mic o, press and hold the power buon for 3 seconds. No lights should display when mic is o.

Push To Talk or “PTT” Mode

• You may wish to use PTT mode in your classroom to avoid unnecessary rustling noise when students are passing around the

OM-20. To use this feature, you must rst switch your OM-20 into PTT mode.

1) On the boom of the OM-20 is a small switch ush with the boom of the mic. With the mic front side facing up, slide the

switch to the le to turn PTT mode on.

2) With the PTT mode on, the user must push and hold down the main center buon for the mic to pick up their voice. When the

main center buon is not being pressed, the mic is silenced.

3) To turn PTT mode o, slide the same switch on the boom of the OM-20 to the right. The mic will then be acve connuously

with no need to use the buon.

Cleaning your Mic

• Periodic cleaning of the microphone is recommended to avoid the buildup of common contaminants like dust, lint, dirt, makeup,

and oil. These can clog the windscreen and prevent it from working well.

• Remove dust & lint build up with a light spray of canned compressed air or a dust cloth.

• Use a disinfectant wipe to clean leover build up that did not come o by dusng. Use extra care around the sensive areas

(charging port, windscreen, and logo buon). Take care not to use a wipe with any excess liquid content that could enter the

openings.

• Dry with a so, lint-free cloth.

Auto Shut-o Times

• If mic is le on while paired with no audio acvity, it will automacally shut o aer 1 hour.

• If mic is le on while unpaired, it will automacally shut o aer 5 minutes.

FCC compliance statement:

Contains Transmier Module FCC ID: Y82-DA14AVD / IC ID: 9576A-DA14AVD

This device complies with Part 15 of the FCC Rules.

Operaon is subject to the following two condions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that

may cause undesired operaon of the device.

Changes or modicaons to the equipment not expressly approved by the Party responsible for compliance could void the user's authority to operate the equipment.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable

protecon against harmful interference in a residenal installaon. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the

instrucons, may cause harmful interference to radio communicaons. However, there is no guarantee that interference will not occur in a parcular installaon. If this equipment does cause

harmful interference to radio or television recepon, which can be determined by turning the equipment o and on, the user is encouraged to try to correct the interference by one or more of

the following measures:

—Reorient or relocate the receiving antenna.

—Increase the separaon between the equipment and receiver.

—Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.

—Consult the dealer or an experienced radio/TV technician for help.

—Privacy of communicaons may not be ensured when using this device.

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