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MH89791

Mitel Networks
Part Number MH89791
Manufacturer Mitel Networks
Description CEPT PCM 30 Transmit Equalizer Advance Information
Published Apr 27, 2005
Detailed Description ® MH89791 CEPT PCM 30 Transmit Equalizer Advance Information Features • • • Used with the MH89790B Programmable equali...
Datasheet PDF File MH89791 PDF File

MH89791
MH89791

Overview
® MH89791 CEPT PCM 30 Transmit Equalizer Advance Information Features • • • Used with the MH89790B Programmable equalization for different line lengths 6dB loop around circuit TL TL TI Ri RL RL TxT EIT EA L1 EB EC L2 RCHT RCLT TxR EIR SW RCHR RCLR ISSUE 4 May 1995 Pin Connections 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Description The MH89791 is a programmable network for use with a PCM 30 line interface, specifically the MH89790B on The ISDN EXPRESS™ Card.
The MH89791 contains transmit equalizer and a 6 dB pad, for external loop around, with 120Ω input and output impedances.
It is fabricated in thick film hybrid technology and is 2 inches high by 0.
5 inches wide.
The MH89791 is designed to interface to 22 gauge/.
6 mm twisted pair.
Figure 1 shows how the MH89791 is connected to the transmit side of a PCM 30 interface.
The seven switches control the distance settings of the equalizer.
Ti, Ri, TL, and RL are the inputs and outputs of the 6 dB pad.
The 4 pole double throw...


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