Comtech EF Data SDM-9220 - Manual (Page 72)

SDM-9220/9230 Hardware Installation Guide
4-30 Memotec Inc.
3. Ensure that the 3 wires of the factory-supplied harness are properly inserted into the
plastic connector of the harness. Refer to
Figure 4-13 .
• Black wire: -48 VDC live wire
• Green/yellow wire: chassis ground
• White wire: electric ground (0 volt RTN).
4. Connect the plastic connector of the factory-supplied harness to the DC inlet, located
at the rear of the SDM-9220/9230 chassis, so that the wires terminate as follows:
• Black wire: to the lug labelled -48V
• Green/yellow: to the ground lug
• White wire: to the lug labelled RTN.
5. Connect the strip terminations of the 3 harness wires to the -48 volt DC power supply,
as follows:
• Black wire: to the -48 VDC post
• Green/yellow wire: to the facility ground
• White wire: to the 0 VDC post.
6. Turn on the circuit breakers to the -48 volt DC power supply.
7. Turn the chassis power switch ON by pushing it to 1 . The unit will begin power-up
and system check immediately.
WARNING:
: If at a later time you need to remove the unit cover or access
internal components, turn OFF the unit and the -48 VDC power supply, and
disconnect the harness from the DC inlet on the NetPerformer chassis to
avoid electrical shock and damage to the unit.
4.11.2 System Status on Power-up
On power-up the SDM-9220/9230 executes program decompression, Signaling Engine
software load and system test, which takes less than one minute to complete. You can
follow the status of the initialization sequence from the console (see next section), or by
watching the front or rear panel LEDs.
Table 4-4 shows the various front panel LED states that occur during the NetPerformer
startup sequence (after a power-on or software reset).
NOTE: The entire startup sequence is executed within 30 seconds. Some of its stages
are brief, and may be difficult to distinguish from the rest. Refer also to
“Sys-