TX56/56A and TX57/57A Installation Manual
5 April 2022
01776-00-01
Issue AD
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Trig Avionics
Page 3
2. Introduction
2.1 TX56 and TX57 Description
The TX56 and TX57 Nav/Com systems are ED-23C compliant class C (25
kHz offset carrier) and class H1 and H2 (8.33 kHz offset carrier)
communication radios combined with an ED-22B compliant VOR receiver, an
ED-46B class A (manual landing systems) compliant localiser receiver, and an
ED-47B compliant glideslope receiver. The TX56 has a nominal transmitter
power output of 10 watts, and meets the power output requirements for Class 4
and Class 6. The TX57 has a nominal power output of 16 watts, and meets the
power output requirements for Class 3 and Class 5. The TX56 and TX57 are
certified to ETSO-2C169a, 2C128, 2C34f, 2C36f and 2C40c.
The TX56A and TX57A are variants that use 25 kHz channel spacing and are
ED-23C compliant class C (25 kHz offset carrier) communication radios. The
TX56A has a nominal power output of 10 watts, and meets the power output
requirements for Class 4. The TX57A has a nominal power output of 16 watts,
and meets the power output requirements for Class 3. The TX56A and TX57A
are also certified to ETSO-2C169a, 2C128, 2C34f, 2C36f and 2C40c.
Other than the difference in channel spacing the TX56A/57A variants are
identical to the TX56/57 and unless otherwise stated all references to the
TX56/57 also apply to the TX56A/57A.
The TX56 can be powered from either a 14 volt nominal or 28 volt nominal
DC power supply with no configuration changes required. The TX57 requires
a 28 volt nominal DC power supply.
The following combinations apply:
Model
Part
Number
Tx
Power
8.33 kHz
Channels
25 kHz
Channels
Input
Voltage
TX56
01576-00-xx
10 W
Yes
Yes
11 – 33
TX56A 01954-00-xx
10 W
No
Yes
11 – 33
TX57
01578-00-xx
16 W
Yes
Yes
22 – 33
TX57A 01956-00-xx
16 W
No
Yes
22 – 33
Содержание TX56
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