Name: Hitachi GR2000 Series
Brand: Hitachi
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3.10.2.4 Metal (Coaxial) Cable for Secondary (G.703)

For connection to the Secondary (G.703) interface, a send-and-receive pair of metal

(coaxial) cables are required per port (DSU). Figure 3-93 shows the cable

specifications. Be noted that neither the single cable length nor the total length of the

Pin No. Function (device side) Function (DSU side)

1 Unused Transmit (+) (B)

2 Unused Transmit (-) (b)

3Transmit(+) (A) Unused

4 Receive (+) (B) Receive (+) (A)

5 Receive (+) (b) Receive (+) (a)

6 Transmit (-) (a) Unused

7 Unused Unused

8 Unused Unused

Note: Because of the cable being a twist pair cable, make pairs of (A) with (a), and (B) with (b) in the

above pin assignment. For other cables than these, there is no need of worrying about the pairing,

either of being connected or unconnected can be accepted.

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Hitachi GR2000 Series Specifications

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