3
Introduction to TFX Audio Interface Module
Physical
Specification
The card is a flat, 4"x5" form-factor module that plugs into the 4100U/4100ES power distribution
interface.
Figure 2. TFX Audio Interface Module
Input
Specifications
• 24VDC
• Supervisory or Alarm Current:
Card Power: 29mA maximum
Environmental
Specifications
• Operating Temperature: 32 to 120F (0 to 49C)
• Humidity: Up to 93% relative humidity at 90F (32C)
External
Connectors
The module has four external connectors:
• TB1 is a 3 position terminal block for audio signal field wiring. Refer to Table 1:
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2'AIN
!DJUSTMENT
Table 1: TB1 Connections
Pins
Description
Pin 1
Riser +
Pin 2
Riser -
Pin 3
Shield
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