TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TDFM-136A Installation Instructions
Page 1-5
TiL 09RE404 Rev C Issue 1
TABLE 1-4
TDFM-136A – Transmitter Characteristics
Characteristic
Specification
RF Output Power:
Low
High
1W.
10W.
Output Impedance
50 ohms
Maximum Deviation:
Wide (25 kHz)
Narrow (12.5 kHz)
± 5 kHz
± 2.5 kHz
Maximum Deviation – Narrow
± 2.5 kHz (12.5 kHz mode)
Spurious Attenuation
-90 dB below carrier level
Frequency Stability
± 2.5 ppm
Microphone Circuit
Carbon or equivalent
Sidetone Output
0.5W (max) into 600 ohms
Harmonic Attenuation
-65 dB below carrier level
FM Hum And Noise
-40 dB
Audio Input
50 mV at 2.5 into 200
Ω
input circuit for ± 3.5 deviation,
adjust.
Audio Distortion
Less than 5%
1.6 CERTIFICATION
SUMMARY
The following table gives a summary of DO-160D Environmental Testing for Technisonic Model
TDFM-136A, VHF Digital Transceiver.
TABLE 1-5
TDFM-136A – Environmental Testing Summary
Conditions
Section
Description of Conducted Tests
Temperature and Altitude
4.0
Equipment tested to categories B4 and D1.
Temperature Variation
5.0
Category B.
Humidity 6.0
Category
A.
Operational Shock and Crash Safety 7.0
Category
A.
Vibration
8.0
Equipment is tested without shock mounts to
categories S and U.
Magnetic Effect
15.0
Equipment is class Z.
Power Input
16.0
Category B.
Voltage Spike
17.0
Category B.
Audio Frequency Susceptibility
18.0
Category B.
Induced Signal Susceptibility
19.0
Category A.
Radio Frequency Susceptibility
20.0
Category U.
RF Emission (DO-160D)
RF Emission (DO-160C)
21.0 Category
B.
Category Z.
Electrostatic Discharge
25.0
Category A.
