Eci Telecom NPT-1020 Installation And Maintenance Manual page 87

NPT-1020 Installation and Maintenance Manual
The three 30 AWG cable pairs connect on one side to the double 136-pin VHDCI connector and on the other
side to the conversion box. The conversion box connects the three 30 AWG cable pairs and three pairs of 26
AWG cables, making the wire-size conversion. The 26AWG cables are connected at the other end to the
customer's DDF. Each cable in a pair is bonded to the other, shaping a figure-eight pattern.
Each pair of the 26 AWG cables carries 21 E1s, totaling 63 E1s. To facilitate identification of the E1 groups,
each cable pair is marked with color strips along its jacket according to the following key:
First pair, E1s Nos. 1 to 21 - red strips

Second pair, E1s Nos. 22 to 42 - blue strips

Third pair, E1s Nos. 43 to 63 - yellow strips

4.9.4.5 Routing and Connecting E1 Cables to the PME1_63
The PME1_63 has a 272-pin VHDCI female connector for connecting to its 63 x E1 interfaces. A special cable
offered by ECI is used to make the connection, see
has a pin guide that must be inserted into the corresponding hole, to the lower left side of PME1_63
connector.
A cable guide and holder installed above the NPT platform helps route the special PME1_63 cables neatly.
This unit makes it possible keep the cable path the short route between the module on the platform and
the conversion box (on the cable).
To connect the PME1_63 traffic cable:
1. Identify the pin guide on the traffic cable connector and the corresponding hole on the PME1_63 and
insert it.
2. Gently push the cable connector into the corresponding PME1_63 connector. If resistance is felt
before the connectors mate, pull the connector out and repeat the procedure.
3. Secure the connector in place by tightening its four captive screws.
ECI Telecom Ltd. Proprietary
Traffic Cable for PME1_63. The connector on the cable
Installing Equipment
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