Hitachi GR2000 manual Transmit + Receive + Unused

(CAT 5) cable is required. A UTP Category 3 (CAT 3) cable is applicable when connecting only to the 10BASE-T port at 10 Mbps. Figure 3-83 shows the cable specifications.

Table 3-96 Pin arrangement on the device side (10MBASE/100MBASE interface)

Pin No.	Specifications
1	Transmit (+)	(A)
2	Transmit (-)	(a)
3	Receive (+)	(B)
4	Unused	(C)
5	Unused	(c)
6	Receive (-)	(b)
7	Unused	(D)
8	Unused	(d)

Note: Because of being a twisted pair cable, make pairs of (A) and (a), (B) and (b), (C) and (c), and (D) and (d) using the above pin assignment. For pins other than these, do not care about the pairing, either unconnected or connected can be accepted.