TECHNISONIC INDUSTRIES LIMITED
TDFM-9300 Installation Instructions
TiL 13RE471 Rev. D Issue 5
14
2.7
INSTALLATION – WIRING INSTRUCTIONS
Figures 4 – 7 show all required connections and recommended wire sizes for the TDFM-9300
transceiver. There are receive audio, mic audio, and Push To Talk (PTT) lines for each band as
well as two sets of lines combining all bands. The TDFM-9300 can be wired such that band
selection can be made on the audio panel. Up to 7 positions need to be available on the audio
panel; otherwise, the TDFM-9300 can be wired into one or two positions of the audio panel where
band selection and audio monitoring are done on the TDFM-9300 front panel. An installation can
be wired in a combination of both methods since 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 + 28 V
DC
– J1 PINS 2 AND 15
Both pins should be connected to +28 volts DC +/- 15%.
2.10 MIC 1, 2, 3, 4, 5, 7 AND 8 – J1 PINS 3, 6, 9, J6 PIN 6, J9 PINS 19 AND 20
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 or A711L) in which case the shield must be
connected to the lo input. These are individual inputs for each band.
2.11 MIC COMBINED 1 AND 2 – J6 PINS 7 AND 13
The combined mic inputs should be wired and shielded as the individual mic inputs above. These
mic inputs can be used for any band. Band selection is made at the TDFM-9300 front panel.
2.12 AUDIO 1, 2, 3, 5, 4, 7 AND 8 – J1 PINS 4, 7, 10, 20, J6 PIN 5, J9 PINS 14 AND 15
These are individual audio outputs from each band. All outputs are 600 ohms impedance. The
output power is 65 mW maximum. Unused outputs do not need to be terminated and should be
left unconnected.
2.13 AUDIO COMBINED 1 AND 2 – J6 PINS 2 AND 10
These are combined audio outputs from all bands as selected from the front panel. The
specifications are the same as the individual outputs above.
2.14
PTT 1, 2, 3, 5, 4, 7 AND 8 – J1 PINS 5, 8, 11, 21, J6 PIN 3, J9 PINS 21 AND 22
There are individual PTT lines for each band. These lines should be floating when in receive
mode 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 1 AND 2 – J6 PINS 4 AND 12
These are combined PTT inputs to all bands as selected from the front panel. The specifications
are the same as the individual inputs above.
Содержание TDFM-9300
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