User Manual

User Reference and Installation Manual 3-2
MDS 5800 II
3.2 Notices
CAUTION
DO NOT OPERATE EXTERNAL ANTENNA ODU UNITS WITHOUT AN ANTENNA,
ATTENUATOR, OR LOAD CONNECTED TO THE ANTENNA PORT. DAMAGE MAY OCCUR
TO THE TRANSMITTER DUE TO EXCESSIVE REFLECTED RF ENERGY.
ALWAYS ATTENUATE THE SIGNAL INTO THE RECEIVER ANTENNA PORT TO LESS THAN
–20 dBm. THIS WILL PREVENT OVERLOAD AND POSSIBLE DAMAGE TO THE RECEIVER
MODULE.
WARNING
HIGH VOLTAGE IS PRESENT INSIDE THE ODU and SDIDU
TM
WHEN THE UNIT IS
PLUGGED IN. TO PREVENT ELECTRICAL SHOCK, UNPLUG THE POWER CABLE
BEFORE SERVICING. UNIT SHOULD BE SERVICED BY QUALIFIED PERSONNEL ONLY.
3.3 PRE-INSTALLATION NOTES
It may be useful to gain familiarity with the MDS 5800 II via back-to-back bench testing prior to
final installation. We highly recommend installation of lightning protectors on the ODU/IDU
Interconnect Cable to prevent line surges from damaging expensive components.
Back-to-back bench testing prior to final installation is highly recommended in order to gain
familiarity with the product. The following additional equipment is required for back-to-back
testing:
• Low-loss cables, N-male connectors on ODU interfaces.
• Four Inline RF attenuators, 40 dB each (or replace two with single 80 dB attenuator), rated for
ODU frequency.
The SDIDU
TM
and ODUs must be configured in an operational configuration and set-up as shown
in Figure 3-2. When equipment is connected in operational configuration, no errors should be
reported on the front panel.