Rev B
Page 1
JA40-001
ICS Tie Line Isolation Transformer
SECTION 1 - DESCRIPTION
1.1
System Overview
The JA40 Intercom Tie Line Isolation Transformer allows four bi-directional intercom tie lines to be coupled and
provides galvanic isolation. This prevents ground loops and common impedance problems in multi-box intercom
installations.
1.2
Features Overview
The JA40 features a fully balanced interconnect with shielded transformers and an aluminum enclosure.
1.3
Inputs and Outputs
for the mating connector designators and pin assignments for the
input and output signals.
1.3.1
Bi-directional Ports
ICS Tie-line
The JA40 connector has eight contacts to provide four ICS TIE LINE HI / LO bidirectional audio signals.
1.4
Specifications
1.4.1
Electrical Specifications
The JA40 does not require aircraft electrical power.
1.4.1.1
Audio Performance
Rated Input Level
Audio rated input level
1.20 Vrms
±
10 %
Rated Output Power
Audio rated output power
1.20 Vrms
±
20 %
Audio Frequency Response
Audio frequency response
≤
3 dB from 300 to 6000 Hz
Distortion Characteristics
Audio output distortion at rated power
≤
10 %
Audio output distortion at 10% of rated power
≤
3 %
Connected Load
ICS TIE load (4 ea.)
2000
Ω
±
10 %
