TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TDFM-9100 Installation Instructions
TiL 13RE483A
2-4
2.7
INSTALLATION - WIRING INSTRUCTIONS
Figure 2-2(a, b and c) show all required connections and recommended wire sizes for the TDFM-
9100 transceiver. There are receive audio, mic audio and PTT lines for each band as well as a
set of lines combining both bands. The TDFM-9100 can be wired such that band selection can be
made on the audio panel. Two positions need to be available on the audio panel. Otherwise the
TDFM-9100 can be wired into one position of the audio panel where band selection and audio
monitoring is done on the TDFM-9100 front panel. An installation can be wired in a combination
of both methods as all inputs and outputs are always active.
2.8
MAIN GROUND – J1 PINS 1 AND 14
Both pins should be connected to power ground. These pins are internally connected to the
chassis.
2.9
MAIN POWER + 28VDC – J1 PINS 2 AND 15
Both pins should be connected to +28 volts DC +/- 15%.
2.10 MIC 1 AND 2 – J1 PINS 3 AND 6
The microphone input signals shall be connected using shielded wire with the shield connected to
ground (pin 1 or 14). It is recommended for best results to leave the other end of the shield
floating to prevent ground currents unless you are connecting to an audio panel with floating hi
and lo inputs (like the Technisonic A710, A711, A711L or TDAP-711) in which case the shield
must be connected to the lo input. These are individual inputs for each band.
2.11 MIC COMBINED – J1 PIN 9
The combined mic inputs should be wired and shielded as the individual mic inputs above. This
mic input can be used for either band. Band selection is made at the TDFM-9100 front panel.
2.12 AUDIO 1 AND 2 – J1 PINS 4 and 7
These are individual audio outputs from each band. All outputs are 600 ohms impedance. The
output power is 600 mW maximum. Unused outputs do not have to be terminated and should be
left unconnected. These outputs are also found on J5 along with their respective grounds such
that a separate wire bundle can be run with only audio outputs, further reducing the possibility of
cross talk.
2.13 AUDIO COMBINED – J1 PIN 10
This is combined audio output from either or both bands as selected from the front panel. The
specifications are the same as the individual outputs above.
2.14
PTT 1 AND 2 – J1 PINS 5 AND 8
Individual PTT lines for each band. These lines should be floating when in receive and grounded
for transmit. The input has a pull up resistor to 5 volts. Connecting an audio panel that wishes to
see more, may result in no receive audio. Connect a 1N4006 diode in series with the cathode
towards the audio panel in this case.
2.15 PTT COMBINED – J1 PIN 11
The combined PTT input to either or both bands as selected from the front panel. The
specifications are the same as the individual inputs above.
