GatesAir Intraplex VF-25, Installation And Operation Manual

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Intraplex VF-25 Voice Module Appendix A – MAs for VF-25 Voice Module
Version 7.1, November 2009
A-38 GatesAir, Inc.
Intraplex Products
Table A-44. Selectable Attenuation Control for Nominal Input Level of 0dBm
Jumper/Position MA-309 Output Channel
JMP 5/Position 1-2 -10dBm attenuation
1 JMP 5/Position 3-2 -3dBm attenuation
JMP 5/Position open 0dBm attenuation
JMP 6/Position 1-2 -10dBm attenuation
2 JMP 6/Position 3-2 -3dBm attenuation
JMP 6/Position open 0dBm attenuation
JMP 7/Position 1-2 -10dBm attenuation
3 JMP 7/Position 3-2 -3dBm attenuation
JMP 7/Position open 0dBm attenuation
JMP 8/Position 1-2 -10dBm attenuation
4 JMP 8/Position 3-2 -3dBm attenuation
JMP 8/Position open 0dBm attenuation
A.2.5.5 Additional MA-309 Input/Output Options
In the situation where the VF-25 module and MA-309 module adapter are used for transport of 2-Wire
Audio with E&M signaling on the output side of the circuit, there are two possibilities to adjust the
output signal level (one on the VF-25 module and one on the MA-309 module adapter). Table A-45
shows the selectable attenuation control for nominal input levels of -16 and 0 dBm from voice
frequency modules using the MA-309 module adapter. Table A-46 lists specifications for the MA-309
module adapter.
Table A-45. Selectable Attenuation Control for Nominal Input Levels of -16 dBm & 0 dBm
Input to
VF-25
VF-25
Settings
MA-309 Jumper Settings & Resultant Outputs
0 dBm -3 dBm -10dBm
-16 dBm in +7 dB +7 dBm out +4 dBm out -3 dBm out
-16 dBm in 0 dB 0 dBm out -3 dBm out -10 dBm out
0 dBm in +7 dB +7 dBm out +4 dBm out -3 dBm out
0 dBm in 0 dB 0 dBm out -3 dBm out -10 dBm out