TELIKOU
BK-601 Belt Pack
2
above it will be ON to indicate that the call function is activated.
3. Volume control
This knob is used to control the level of audio signal received from the intercom line, and can
be used to adjust the volume of earphone.
4. Power LED
A green LED indicator. When BK-601 is powered, this light will be ON.
5. Mic LED
A green LED indicator. When Mic switch (1) is turned on, this light will be ON.
6. Call LED
A red LED indicator. When a call signal from the intercom system is received, this light will be
ON, indicating that there has a talk request of some station, now, you should wear on the
headset and prepare for the call.
7. Sidetone adjustment
It is in the hole next to belt-clip on the backside of the unit, and can be used to adjust the
sound level of your own voice in the earphone, aiming to decrease sound feedback and avoid
squeal. When making adjustment, turn on the Mic key(1) and adjust volume to proper level,
then make a sound against microphone, or make a sound via rubbing microphone with finger.
At the same time, use a small screwdriver, insert it into the hole, and rotate it at clockwise
and anticlockwise slowly, until the sound or rubbing sound is minimal.
8. Headset connector
5-pin XLR female connector. Configuration pin outs:
Pin 1--Head Mic common
Pin 2--Head Mic hot
Pin 3--Earphone common
Pin 4--Earphone hot
Pin 5--Null
9. Intercom cable connectors
A pair of 3-pin XLR male and female connectors parallel connected at internal for loop
through connection of the intercom station.
XLR-3 configuration pin outs:
Pin 1--Common
Pin 2--DC supply
（
15-30V
）
Pin 3--Audio signal
z
Troubleshooting
Problem: Listen level too high or too low
Cause 1: More than one Terminal in the system or non Terminal
Solution 1: Check every channel, each channel must only have one Termianal.
Problem: Microphone level too high or too low
Cause 1: Mouth is far or close to the mouth
Solution 1: Adjust the distance between microphone and mouth
Problem: System feedback (Acoustical)
Cause 1: Listen level control at this station or a remote station is set too high