Okayo C 7192C Operating Instructions Manual - page 4
Okayo Wireless Audio Link System
9
Okayo Wireless Audio Link System
4
Receiver Connection (C 7281A)
See Fig. 4.
Connection to your amplifier or mixer unit can be made via the 6.35mm unbalanced AF Out jack or 3 pin XLR
balanced AF Out socket. Connect the output of the receiver to the input of your amplifier or mixer with an appropriate
lead.
The 6.35mm AF Out socket is provided with a high/low impedance switch. This switches between 80mV and 700mV
impedance.
• If connecting to a MIC input jack, select LOW. If connecting to a line or aux input jack select HIGH.
• If using an XLR MIC jack, connect it from XLR balanced AF Out to a mixer or amplifier AUX IN socket, which might
be XLR or a phono TRS jack.
AF Impedance Selection (HI / LOW Control)
Remark: The AF impedance selection only controls the Unbalanced AF Out connection (6.35 mm).
In order to prevent the impedance being too high thus producing unexpected noise, please set the impedance switch
at LOW if you are connecting a jack to a low level input in the subordinate device.
If your subordinate device is configured with a general input socket (e.g., LINE IN, AUX IN , etc), please set the
impedance switch to HI to avoid a low-volume output.
Transmitter Operation (C 7282A)
See Fig. 5 & 6.
1. Press the main power switch on and turn power switch/AF level knob clockwise to turn the transmitter unit on.
2. The LCD screen will display ‘ON’ then revert to the factory default channel (or the channel last selected).
3. To select a channel press the SET button. Using the UP/DOWN frequency adjustment buttons you can set the
transmitter to match the channel used by the receiver (C 7281A).
4. Adjust the AF level to the desired position.
5. The module is now ready to transmit signal to the receiver unit (C 7281A). When transmitting audio the TX indicator
will light green. The AF indicator displays audio level when users are speaking into a mic or music is playing.
In addition individual transmission indicators are provided for wired mic input and aux/line input (number 3 & 5
respectively on Fig. 6). These will illuminate whenever signal from each input is being transmitted.
6. A stereo phone jack and level control is provided on the front panel for local monitoring of aux/line input signal).
3 Pin XLR Lead
AMPLIFIER
Mic IN
Line IN
AUDIO MIXER
WIRELESS
RECEIVER
Line OUT
SPEAKER
Fig. 4: Receiver Connection To Amplifier/Mixer
AMPLIFIER
SPEAKER
Mic IN
Line IN
AUDIO MIXER
WIRELESS
RECEIVER
Line OUT
6.35mm Stereo jack Lead
C 7192C and C 7195C Transmitter Troubleshooting
• Power LED does not illuminate after pressing power switch.
Check batteries are charged and inserted correctly.
For handheld microphone, when pressing power switch ensure you hold it down for 2-3 seconds.
• LCD shows “Err” when switching off.
Contact your place of purchase for information on resetting your transmitter.
• LCD panel displays garbled information.
Remove batteries and re-insert them.
• No sound output
Check frequency of transmitter is the same as the receiver.
Check volume level of both transmitter and receiver.
For beltpack transmitter, ensure mute button is not activated.
Ensure transmitter is within range of the receiver.
Check for sources of interference, large metal objects etc. within range of the transmitter.
• Signal disturbance.
When operating two transmitters in the same area, ensure frequencies selected are several channels apart. This
helps to reduce crosstalk between transmitters. Also note that other wireless devices can cause interference,
ensure you adjust your frequency around these devices where possible.
Fig. 11: Mounting C 7281A & C 7282A In 19” Racking
A. Two units side by side mounting.
B. Single unit mounting
Or