5
HARDWARE INSTALLATION
Be certain to follow standard anti-static procedures when handling any of Midian’s products.
Getting Started:
The TTC has a number of adjustment potentiometers and configuration jumpers. These have been adjusted and
configured at the factory for a typical installation. However, audio levels should be verified and adjusted (if
necessary) at the time of installation. Also, the configuration jumpers should be inspected prior to installation to
verify that they are in the right configuration. Jumper descriptions appear in the jumper settings section with a
quick reference table.
Line Interface
The line interface connector CON7 is a 10-pin RJ-45 style connector on the left side of the back panel.
2-Wire Operation:
For a 2-wire installation, simply connect pins 5 and 6 (red and green) to the dedicated line.
This is the standard configuration for the TTC. See table 3.1.
Table 3.1
Pin Color
2-Wire
CON7-4 Black Not
Used
CON7-5 Red Line
1
CON7-6 Green Line
1
CON7-7 Yellow Not
Used
4-Wire Operation:
For a single line 4-wire installation, connect pins 4 and 7 (black and yellow) for transmit audio
to the base station (Line In) and pins 5 and 6 (red and green) for receive audio from the base station (Line Out).
For this feature TTC Option J must be ordered and installed in the TTC-2. JP27 should be moved to the 2-3
position. See table 3.2.
Table 3.2
Pin Color 4-Wire
CON7-4
Black
TX (Line In)
CON7-5
Red
RX (Line Out)
CON7-6
Green
RX (Line Out)
CON7-7
Yellow
TX (Line In)
Diagram 3.1
1
