99RE255
TDFM-136 Installation & Operating Instructions
3-2
Technisonic Industries Ltd.
3.6 Installation - Pin Locations and Connections
A single 15 pin DSUB connector, mounted on the rear of the unit, provides the means to
connect all power, control and audio signals between the TDFM-136 and the airframe. The pin
numbers and locations for the 15 pin DSUB connector are shown in figure 3-1 below. The view
shown is of the connector mounted in the unit, select mating connector appropriately.
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The description of the pin connections for the transceiver are in provided in TABLE 3-1.
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1
Audio - Headset
output – 600
p
p
p
p
2
Serial Data Out
output – RS232
3
Power - Panel Lighting
28VDC standard, 5VDC option
4
Signal - Memory Up
input – active low
5
Signal - Memory Down
input – active low
6
Audio - Microphone
input
7, 14
Power - Main +28VDC
power
8, 15
Power - Main Ground
power
9
Audio - Speaker
output – 4
p
p
p
p
10
Signal Ground
11
Serial Data In
input – RS232
13
Signal – PTT
input – active low