JK Audio innkeeper 1x/rx - Manual (Page 7)

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Jumpers 2 and 3 control whether the Phone Line jack and Phone jack
are switched or bridged. In the factory default open position the jacks
are switched. This means that when the Call button is pressed any
phones connected to the phone jack of the innkeeper are disabled.
When the Drop button is pressed, the phones become active again. In
the optional closed position, the jacks are bridged together.
Warning! The AC cable must be unplugged from the back of the
innkeeper 1x/1rx any time the case is opened. Failure to follow
these instructions could result in injury or death.
Send Signal Level
The Send LEDs display the signal level as it goes out to the phone line.
The goal is to drive the phone line at high enough levels to avoid phone
line noise, but not so loud as to cause excessive clipping.
Adjust the Send level control until you see occasional flashes of the
second green LED (-9dB) and very rarely any flashes of the red -3dB
peak Send LED. These flashes should occur only during loud speech
bursts. If the red LED stays lit for extended periods you can assume
that much of your speech is being clipped or distorted. In this case you
should lower the Send volume control.
Receive Signal Level
The receive LEDs display the signal coming from the phone line and
out of the DSP. The Caller level control does not change what you see
on these LEDs. Adjust the Caller level control to give you the best
signal at your equipment.
AGC
When the Automatic Gain Control is used, innkeeper 1x/1rx automati-
cally adjusts the Caller level to maintain acceptable levels between
calls. In this way an unusually loud caller will be similar in level to the
unusually soft caller.
Caller Ducking
The Caller Ducking option lowers the level of the Caller’s audio by
9 dB when local audio is present. This is a good way to regulate those
obnoxious callers when the talent is speaking.
Operation (continued) Operation (continued)