TECHNISONIC INDUSTRIES LIMITED
TDAP-611 Operating Instructions
TiL 15RE553 Rev. B
5
2.1
FRONT PANEL
This section explains the operation of the TDAP-611 Audio Panel, and how to use the system in a
typical aircraft environment. All normal user controls are on the front panel of the unit and are
either variable rotating controls, or selectable pushbutton switches.
The exact radio legends on the buttons of the TDAP-611 may vary from the illustration shown,
due to the final legend inserted into the buttons that is installed for the specific aircraft installation.
For a full view of the controls given, please see Figure 1. All rotary controls are illuminated for
night flight.
FIGURE 1:
TDAP-611 Front Panel Operators Switches and Control
The top row of variable controls sets the level of the incoming RX or RECEIVER audio from the
associated Communications Transceiver radio as listed on the button immediately below the knob
(COM1, COM2, etc. through to COM8). The volume controls also have a push-on / pull-off
functionality that selects which of the incoming receiver audio will be sent to the crew headsets.
The volume control and the switch function independently of each other. Pull out the switch to be
able to monitor the receiver audio and adjust the volume to the desired level.
The middle row of pushbuttons selects the transceiver (or COM radio) to be used when
transmitting. When a COM transceiver has been selected, its associated indicator will be
illuminated and any incoming RX or RECEIVER audio will be sent to the crew headsets. This
function is often referred to as Auto-RX select. Press the button again to deselect the COM
transceiver.
Any combination of RX sources may be selected at one time for system monitoring purposes.
Multiple TX destinations may also be selected by pressing in two or more buttons simultaneously
to set up simulcast operation. Pressing any TX button in automatically resets any previous
selection, but RX selections are independent push on / push off switches.
The left-most pushbuttons are normally for AM COM transceivers; the remaining pushbuttons are
for tactical radios.
The dual-concentric knobs at the right side of the unit adjust ICS VOLUME (intercom, inner knob)
and RX VOLUME (outer knob).
SECTION 2: OPERATING INSTRUCTIONS
