JK Audio Universal Host - Manual (Page 3)

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Features
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1. Handset Button - Press this button to use the handset as if you
were on a normal telephone call.
2. Online Button - Press this button to disable the handset and
activate the Universal Host for use as a digital hybrid.
3. Send 1 Level - Adjusts the signal level that you are sending
down the telephone line, through the female XLR input.
4. Send 2 Level - Adjusts the signal level that you are sending
down the telephone line, through the 3.5mm mini jack input.
5. Caller Level - Adjusts the level of the signal coming in from the
telephone line, as it is going out the output jacks.
6. Headphone Level - Adjusts the signal level coming from the
3.5mm front panel headphone jack.
7. Hybrid/USB - Selects audio heard at the headphone output.
8. Headphones - The 3.5mm stereo headphone jack contains
either a mix of both the Send input audio and the Caller audio
when the button is in the Hybrid position or stereo audio from
the USB port with the button in the USB position.
9. ON LED - Lit when you are on line with a call using the hybrid.
10. Send LEDs - Displays the signal level going to the phone line.
11. Power LED - Lit when unit is plugged in and receiving power.
12. Receive LEDs - Displays the signal level coming from the
telephone, after the DSP. This signal level will not change
when you adjust the Caller knob.