Installation guide

LTU/NTU SZ-DOC-W5-1.pd
f
Operating Manual
V
ersion: 1.5
Revision: 2002-09-10 8
2.3 Installing a Watson Modem
• Unpack and mount the unit safely. Keep chapter "Important Safeguards" in mind when
choosing an appropriate place for tabletops. Miniracks can be mounted in 19" racks.
• Plug-in units are simply inserted into subracks and will start operation immediately.
Mounting of subracks is described in manual "Installation Manual of Subrack".
• Check the setting of the remote power switch/jumper.
NTU In the default switch position "Rem", the NTU modem is powered via the xDSL
line and will start operation immediately after connection of the xDSL line. In case
the remote LTU modem does not support power feeding, local power supply is
needed for operation. In position "Loc", the NTU modem is powered locally and
needs the power supply connected to operate.
LTU In the default jumper positions "RPWR A ON", "RPWR B ON", .. the LTU modem is
powering the remote NTU unit. In jumper position "OFF", the remote powering
function is disabled.
Caution:
LTUs must
be disconnected from power during change of jumper setting.
See chapter "Power concept"; section "Remote powering" for further information.
• Connect the modem to the network or PC. Plug the appropriate cable to the interface
connector on the unit. Refer to chapter "Connectors' Description" for cable definitions.
• Connect the modem to the DSL line. If using a preconfigured cable, just connect the xDSL
line with male RJ45 cable into the female RJ45 connector of the modem. If you need to
configure the cable, refer to chapter 10 "Connector Description"; section "DSL Connector".
• NTUs in remote power mode will start operation immediately with factory default settings,
and further configuration is optional.
• Optional: Connect the power supply. For local power supply of NTUs, connect the AD/DC
power adapter (ordered separately) to the mains and to the unit. The power adapter is
optional for NTUs in remote power mode. Minirack LTUs can be connected directly to mains,
to a 48V
DC
source or both at the same time. Plug-in units are powered via the subrack
backplane. See chapter "Power concept" for further information.
• Optional: Configure the unit. Connect a VT100 terminal using the serial monitor cable to the
"Monitor" connector of the unit or of the subrack.
Important:
Check DSL mode configuration "master/slave". There must be a "master" unit connected to a
"slave" unit for proper operation. The configuration of a "slave" unit can also be done via the
"master" unit. Refer to chapter "Monitor Operation" for detailed information.
• Check the proper operation. The LED "Local" lights green in normal operation. In "slave"
mode, the LED "Remote" is off, but should light green for normal operation in "master"
mode. See chapter "Alarm Indication" for further information.
Watson modems are generally very easy to install; usually just plugged to the DSL line and to the
network. If more configuration is needed, the operator is supported by comprehensive menus,
default settings, plausibility checks and helpful warning messages. This way, the operator can
easily control the wealth of powerful functions that Watson modems provide.