Memotec NetPerformer SDM-9120 Series, Руководство по установке оборудования

Страница: 42 / 161

NetPerformer Hardware Installation Guide
3-14 Memotec Inc.
► To install jumpers for an E1-75 connection on a single/dual port T1/E1 interface
card:
NOTE:
Hard strapping must be done carefully, to ensure that the pins are well-engaged
in the jumper base on both sides.
1.
Remove the T1/E1 interface card from the SDM-9XXX Series chassis, following the
procedure
“Removing an Interface Card” on page 3-9 .
2.
Hold the interface card firmly in one hand.
3.
Using needle-nosed pliers, install the two jumpers as follows (refer to Figure 3-7 ):
A
white dot
is printed on the board next to pin 1.
As a result, the long side of the jumpers will lay parallel to the port connectors J2 and
J3 on the card.
4.
Close the chassis casing as described on “Closing the Chassis Casing” on page 3-7 .
Warning
Use extreme caution when setting the NT/TE mode.
Jumpers must
not be installed while the unit is under power. To avoid electrical shock
and damage to the interface card or other hardware components, make
sure that the unit is disconnected from its power source before you
access any of its internal components.
Also ensure that the RJ-48 to
E1-75 dual BNC adapter cable has been disconnected from the
digital port.
Use ESD procedure at all times.
Caution
Do not expose the interface card or the SDM-9XXX Series unit to a
magnetic field or electrostatic charge at any time. Otherwise, damage to
the components may occur. Use ESD procedures at all times.
Port Connector Jumper Pins Covered
1 J4
1 1 and 3
2 2 and 4
2 J7
1 1 and 3
2 2 and 4
Table 3-1 Jumper Installation Parameters
Caution
Make sure that the pins are well-engaged in the jumper base on both
sides.