SDM-9220/9230 Hardware Installation Guide
4-12
Memotec Inc.
Warning:
Use extreme caution when setting the NT/TE mode.
Jumper positions
must not be changed 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. Use ESD procedure at all times.
1.
Remove the interface card from the SDM-9220/9230 chassis, following the
procedure
“Removing an Interface Card” on page 4-9
2.
Determine the current NT/TE setting of the interface card; examine the NT/TE
indications written on the interface card near jumpers JP5 and JP6.
- The jumper blocks for both JP5 and JP6 have 15 pins in a 3x5 formation. 10
of these pins (2 rows) are covered by the jumper.
- The port is set to TE mode at the factory. If you are strapping a new interface
card, you need to change the factory setting of jumpers JP5 and JP6
only if you
require NT mode on the interface card
.
3.
Hold the interface card firmly in one hand.
Caution:
Do not expose the interface card or the SDM-9220/9230 unit to
a magnetic field or electrostatic charge at any time. Damage to their com-
ponents could result.
4.
For both JP5 and JP6, moving the jumper from one side to the other changes TE mode
to NT, or NT mode to TE.
Using needle-nosed pliers, move the jumpers to the pin
positions required for your interface.
NOTE:
On the ISDN-BRI S/T interface card, the two jumpers can have different set-
tings, as JP5 controls port 1 and JP6 controls port 2 independently of each
other.
Caution:
Correct configuration of the NT/TE mode jumpers is extremely
important. If you do not strap the digital interface card correctly, the line will be
down and transmission cannot take place. Make sure that each physical connection
is configured for NT mode at one end, and TE mode at the other.
4.6.3
E1-75 Jumpers
On the single/dual port T1/E1 interface card, 2 jumpers must be installed for each port that
will be used for an E1 connection at 75 Ohms. These jumpers are required for compliance
with EMC Immunity standard EN 55024. They are provided with the card.
Caution:
If the jumpers are not installed correctly, an E1-75 connection may
experience noise due to electromagnetic interference.
Summary of Contents for NetPerformer SDM-9220 Series
Page 1: ...NetPerformer SDM 9220 SDM 9230 Hardware Installation Guide ...
Page 8: ...Memotec Inc ...
Page 12: ...Memotec Inc ...
Page 13: ...1 Memotec Inc 1 1 Preface ...
Page 24: ...SDM 9220 9230 Hardware Installation Guide 1 12 Memotec Inc ...
Page 25: ...2 Memotec Inc 2 1 Compliance Information ...
Page 39: ...Compliance Information Memotec Inc 2 15 2 3 3 Compliance to China RoHS ...
Page 41: ...3 Memotec Inc 3 1 Unpacking ...
Page 47: ...4 Memotec Inc 4 1 Hardware Installation ...
Page 80: ...SDM 9220 9230 Hardware Installation Guide 4 34 Memotec Inc ...
Page 81: ...5 Memotec Inc 5 1 Product Description ...
Page 113: ...6 Memotec Inc 6 1 Serial Port and User Equipment Connections ...
Page 122: ...SDM 9220 9230 Hardware Installation Guide 6 10 Memotec Inc ...
Page 123: ...7 Memotec Inc 7 1 Networking Features ...
Page 127: ...8 Memotec Inc 8 1 Troubleshooting Tips ...