Alphatron ALPHACALL MF, Руководство по установке и эксплуатации

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ALPHACALL MF manual version 1.0 Page 12 of 22
ALPHACALL MF
3.3.2 Connecting the power supply
The ALPHACALL MF must be connected to a 22VDC to 32VDC power supply that can supply at
least 2 ampere. Connector 1 in Figure 6 is the power connector. The polarity of the power
connectors is shown on the sticker on the back of the instrument. The maximum core thickness
that can be connected is 2.5mm². The complete connection diagram of the ALPHACALL MF is
included in the Appendix of this manual.
Figure 6: Connecting the power supply
3.3.3 Connecting the microphone and the foot switch
The ALPHACALL MF has no internal microphone and must therefore be connected to an external
microphone (gooseneck). To prevent interference, the shielding of the microphone must be
connected to the - pole of the microphone input. The talk button (foot switch) connection is
located next to the microphone connection. The complete connection diagram of the ALPHACALL
MF is included in the Appendix of this manual.
Figure 7: Connecting the microphone and the foot switch