Simplex 4100-1340, Руководство по установке

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4
Introduction to TFX Audio Interface Module, Continued
External
Connectors,
(continued)
• 2 is a 3 position shield jumper. Refer to Table 2 for pinout description.
• P4 is a 6 position header used to select between /- or /- riser inputs
• Default setting is Audio Riser #1, P4 positions 1-3 and 2-4.
• To select Audio Riser #2, move jumpers to P4 positions 3-5 and 4-6.
Note: Audio Riser # 1 is only available for use with TFX. Audio Riser # 2 is reserved for
future non-TFX appliacations
• R1 is an adjustable trim pot used to change the output audio by +/-6dB.
Continued on next page
Table 2: P2 Jumper Position
Position Function
1-2 24C shield connection
2-3 Earth shield connection(default)
Table 3: Trim Pot Position
Turning Function
CW
Amplify audio output
signal
CCW
Attenuate audio output
signal
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