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3.2.6
X.21 Line Interface Cable for GR2000-B
This interface cable is for the GR2000-B used as DCE. For connecting the GR2000-B
to the V.21 line interface on the terminal, use HN-F9531-B77H (5 m). The boundary
with network is the receptacle on DTE-attached cable. Figure 3-10 below is the
diagram of the V.35 line interface cable.
HDRA 68-Pin Connector
(for Router)
Figure 3-10 X.21 Line Interface Cable
Make sure that the line speed is 1536 kbit/s or less and the maximum cable length
from the GR2000-B to the DTE (terminal) is 16 m or less.
Consult Hitachi if you purchase a cable other the 5 m cable specified above, since
line speed differs depending on the length of a cable. Figure 3-11 below shows the
limitations on the length of cables.
DCE
Router
Figure 3-11 Cable Length Limitations
GR2K-GA-0007
Rev. 5.00
Cable for Router
Connection of cable connectors
Cable length ? ? 5 m
Cable length ? ? 1 6m or less (should be 10m or less in
case that the line speed is 1024kbit ? ^ s or more)
Preparing Interface Cables and the Terminal
M3
D? | S ub 15-Pin Receptacle Connector
Cable for modem (to be
prepared by customer)
Cable length ? ? X m
(for Terminals)
DTE
WS ? ^ P C, etc.
3-9
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