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DAC-LTM/-RLTM External Clock Interface
296-1011-202 Rel. 5.0, Doc. Rev. 02.01 A-19
Technical Specifications
DAC-LTM/-RLTM External Clock Interface
The following applies to all DAC LTMs and RLTMs with an external clock port:
• The external clock cicuitry contains a standard T1/E1 LIU device with receive
TIP/RING terminated at 120 ohms (incoming twisted pair).
• T1 clock rate = 1.544 MHz
• E1 clock rate = 2.048 MHz
• Port is hardwired for Bipolar Mode only.
• Port uses B8ZS/HDB3 encoding/decoding.
The external clock port m
eets or exceeds specifications in ANSI T1.403 and T1.408;
ITU I.431, G.703, G.736, G.775 and G.823; ETSI 300-166 and 300-233; and AT&T Pub
62411.