Hardware Installation
Memotec Inc. 3-15
engaged in the jumper base on both sides.
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 adaptor
cable has been disconnected from the digital port. Use ESD procedure at all
times.
1. Remove the T1/E1 interface card from the SDM-9120/9220/9230 chassis, following
the procedure “Removing an Interface Card” on page 3-9.
2. Hold the interface card firmly in one hand.
CAUTION: Do not expose the interface card or the SDM-9120/9220/9230 unit to
a magnetic field or electrostatic charge at any time. Damage to their
components could result.
3. Using needle-nosed pliers, install the two jumpers as follows (refer to
Figure 3-6):
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.
CAUTION: Make sure that the pins are well-engaged in the jumper base on both
sides.
4. Close the chassis casing as described on “Closing the Chassis Casing” on page 3-8.
5. Connect the following adaptor for E1-75 operations onto the digital port: RJ-48 to E1-
75 dual BNC adaptor cable (Ordering part number. AG2CA0001).
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
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