TECHNISONIC INDUSTRIES LIMITED
TDFM-9300 Installation Instructions
TiL 13RE471 Rev. D Issue 5
15
2.16 TX DATA AND RX DATA – J1 PINS 12 AND 13
These pins provide RS-232 serial communications for use with the RC-9000 remote control head
if installed. Consult the RC-9000 installation manual for details.
2.17
UP AND DOWN – J1 PINS 16 AND 17
These pins can be used to scroll up and down through the bands or channels for the band
currently selected depending on the band input below. The inputs normally floating are grounded
to activate. Two push buttons or a center off, SPDT, spring-loaded toggle switch are typically
used on these inputs.
2.18
CHANNEL/BAND – J1 PIN 18
The Channel / Band input determines the function of the up down inputs above. If left
unconnected, the inputs are for channel selection. If grounded, the input is for band selection.
2.19
PANEL BACKLIGHTING – J1 PIN 25
Connect to aircraft panel dimming bus. The transceiver is capable of supporting 28 V
AC
/
DC
or 5
V
AC
/
DC
backlighting circuits. Select 28 volts or 5 volts via the configuration menu (see Section 2.17
in the TDFM-9300 Operating Instructions manual). No damage will occur if the wrong setting is
made.
2.20
SPEAKER LO AND HI – J6 PINS 8 AND 9
Not normally connected in the aircraft. This output is 4 / 8 ohms at 1.1 watts max and has the
audio associated with Audio Combined 1. This output does not have to be terminated when not
used and should be left unconnected.
2.21
ANTENNA TUNER CONTROL LINES:
P1 (PINS 1, 2, 3, 4, 5, 10, AND 12)
These connections are to control an antenna tuner system such as the Foxtronics FLX-3050B.
Connect according to the manufacturer’s instructions. In the case of the FLX-3050B, the tune
indicator (which is normally connected to a light) can be connected to Pin 10 so that the tuning
indication will show on the TDFM-9300 display. If a passive antenna is used, these lines shall
remain unconnected.
Summary of Contents for TDFM-9300
Page 2: ......