User's Manual

08RE398 TDFM-136B Installation Instructions
2.5 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-136B and the airframe.
The pin numbers and locations for the 15 pin DSUB connector are shown in figure 2-1
below. The view shown is of the connector mounted in the unit, select mating connector
appropriately.
Figure 2-1. Transceiver Mounted View of the 15 Pin Connector
The description of the pin connections for the transceiver are in provided in TABLE 3-1.
Table 3-1. TDFM-136B - Rear Connector Pin Assignments
Pin # Description Notes
1 Audio - Headset output – 600 ohm
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 ohm
10 Signal Ground
11 Serial Data In input – RS232
13 Signal – PTT input – active low
Detailed wiring information is supplied in figure 2-2 below.
2-2 Technisonic Industries Ltd.