TELIKOU
TF-204 Four-Wire Interface
Solution 2: Adjust. Refer to the procedure in the Front Panel section of this manual.
Set the MS-800 termination switch to the ON position.
Cause 3: A headset cord is too long or jointing quality .
Solution 3: Check headset cord
Problem: Hum or buzz in system
Cause 1: Inductive pickup caused by close proximity of this main station or connected
remote stations to power lines or transformers.
Solution 1: Relocate the offending unit.
Cause 2: Intercom line cable is not wired properly; the shield of microphone cable is
not connected to Pin-1 of 3-XLR
Solution 2: Check intercom line cable. Make sure all the cables’ Pin-1 of 3-XLR
connects correct.
Cause 3: 10 Ohm chassis ground resistor is open.
Solution 3: Bridge a 10 Ohm resistor between system ground (G) and earth ground
(
) of any power supply.
If this condition occurs, it is because the system ground came into contact with
something that was "HOT" with respect to the power supply earth ground.
Carefully check the system ground and AC distribution in the area.
V Technical Specification
Bandwidth:
40Hz – 8000Hz
Input:
Balanced;
Resistance : 10K ohm Bridge
4
