JK Audio ComPack - Manual (Page 4)

4
Features
7. DTMF Keypad
1. Female XLR Input
Level Control
2. 3.5 mm Line
Input Level Control
3. Headphone
Level Control
9. Phone Line Switch
On Hook / Off Hook
8. Keypad
On / Off Switch
10. Power
Switch
4. Battery
Door
5. 9VDC
Power Jack
Clip LED
1. Female XLR Input Level Control
The Mic Input volume control adjusts the level of audio from
the female XLR input. Adjusting this control determines the
level of audio you send down the phone line from this input.*
There is an LED that will indicate when your audio is clipping
so you can decrease your input volume to avoid distortion.
2. 3.5 mm line input level control
The Line Input volume control adjusts the level of audio from
the 3.5 mm input. Adjustment of this control determines the
level of audio you send down the phone line from this input.*
*The FCC requires that a limiter be present in any device that con-
nects to a phone line. The peak limiter within the ComPack will
help to control the audio level sent down the phone line so it does
not exceed the maximum audio level specified by the FCC.
6. Phone Mix
Output /
Intercom Link
13
Block Diagram
RJ-1
1
Phone
Line
Jack
1/4"
Headphone
Jack
FCC signal limiter
DTMF Keypad
Line
Output
3.5mm
Line Input XLR Input
JK
Audio,
Inc.
ComPack
Block
Diagram
1/10/02
-
W
R
Intercom
LInk
Switch
Selects
XLR
Function
Clip LED
mic/line switch
Hybrid
T
ransformer
Handset
T
ype
Switch
Headset Emulator
Circuit
RJ-22
Handset
Jack
Ring
LED
1/4"
TRS
Cellular Interface
Hybrid
T
ransformer Isolation
T
ransformer
PBX