Hitachi GR2000 Series Installation Manual page 188

(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.
1
2
3
4
5
6
7
8
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.
Specifications
Transmit (+)
Transmit (-)
Receive (+)
Unused
Unused
Receive (-)
Unused
Unused
(A)
(a)
(B)
(C)
(c)
(b)
(D)
(d)