NEC Ds2000 Hardware Manual Instructions Manual

							1. Installing the
Cabinet
1-9
Hanging the Cabinet(Figures 1-6 and 1-7)
1. Hang the Main Equipment Cabinet on the wall mount hang-
er as shown:

See Figure 1-6 when hanging a 4 slot cabinet.

See Figure 1-7 when hanging an 8 slot cabinet.
2. Using the remaining screws that were packed with the hang-
er, secure the cabinet to the plywood backboard.
Figure 1-6  HANGING THE 4 SLOT CABINET
80000 - 13
INSTALLING THE CABINET 
						

							1-10
INSTALLING THE CABINETFigure 1-7  HANGING THE 8 SLOT CABINET
80000 - 60 
						

							1. Installing the
Cabinet
1-11
GROUNDING THE CABINET
Removing the Right Side Panel (Figure 1-8)
Remove the cabinet right side panel to gain easy access to the
ground lugs and system cabling. The cabinet has two ground
connections: ETH (Earth Ground) and PBXG (PBX Ground).
1. Remove the two screws that secure the right side panel to
the cabinet.
2. Carefully slide the right side panel down until it swings clear
of the cabinet.
Figure 1-8  REMOVING THE SIDE PANELS
80000 - 16
4 Slot Cabinet
Shown 
						

							1-12
GROUNDING THE CABINET
— For Your Notes — 
						

							1. Installing the
Cabinet
1-13
GROUNDING THE CABINET
Attaching the Ground Wires (Figure 1-9)
The system provides two ground terminations. Each ground
connects from the system to the ground termination using 12
AWG stranded copper wire (see Figure 1-9).
Use the ETH (Earth Ground) for safety/system ground. You
mustconnect ETH to a known earth ground.

Use the PBXG (PBX Ground) if you have trunks that require
telco ground (such as ground start trunks). This ground is not
required for loop start trunks.
1. Remove the lug on the ground connection you want to connect.
2. Follow Figure 1-10 and run the ground wire(s) through the
RFI Suppressor Assembly as shown.
3.For Ear
th Gr
ound:
Run a ground wire from the ETH lug to a known earth ground.
For PBX Gr
ound:
Run a ground wire from the PBXG lug to the telco ground.
4. Crimp ring terminals as required to the ground wires.
5. Reinstall and firmly tighten the lug(s) removed in step 1 above. 
Do not plug in the power cord or reinstall the right sidepanel until all PCB installation and cabling are complete.
Figure 1-9  ATTACHING THE GROUND WIRES
80000 - 17
To earth ground
To telco ground
4 Slot Cabinet
Shown 
						

							1-14
RFI SUPPRESSOR ASSEMBLIES
Installing RFI Suppressor Assemblies (Figure 1-10)
You must install RFI Suppressor Assemblies as follows. The
suppressors mustbe mounted inside the cabinet and as close to
the appropriate PCB as possible.
For Station and Trunk Cables— Only install these assemblies if you are installing non-A
station and trunk PCBs in a 4 slot cabinet. If you have a
mixture of A and non-A PCBs, you only need to install
the assemblies on the non-A PCBs.
— RFI assemblies on station and trunk cables are not
required with 8 slot cabinets, since these cabinets use only
APCBs.

For Ground Wires— You must install a separate RFI assembly for the ground
wire(s) in all systems.
— If your system has 2 ground wires, install them both in
the same assembly.

For CPU Connections— You must install a separate RFI assembly for the CPU
mod jack and RS-232 cables in all systems. Install both
cables in the same assembly.
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							1. Installing the
Cabinet
1-15
RFI SUPPRESSOR ASSEMBLIES
80000 - 67
Figure 1-10  INSTALLING RFI SUPPRESSOR ASSEMBLIES For Station and Trunk Cables

Required only when using non-A
sta-
tion and trunk PCBs in 4 slot cabinets:
—16DSTU PCB P/N 80021
—8ASTU PCB P/N 80041
—4ASTU PCB P/N 80040
—4ATRU PCB P/N 80010
—8ATRU PCB P/N 80011

Not required for 8 slot cabinets. All 8
slot cabinets must use A
station and
trunk PCBs.For CPU Connections

Required on CPU mod jack and
RS-232 cables for all installations. For Ground Wire(s)

Required for all installations. 
						

							1-16
POWER SUPPLY INSTALLATION
Installing the Power Supply (Figures 1-11 and 1-12)
The power supply provides the
DC power sources required to
operate the system:
1. Slide the power supply into the
CN101 slot as shown at right.
2. Using a long-shaft phillips
head screwdriver, tighten the
two screws that secure the
power supply.
An 8 slot cabinet may require up
to 3 power supplies, using slots
CN101, CN102 and CN103.
Refer to System Configuration
on page 1-17 for more.
Figure 1-11  POWER SUPPLYFigure 1-12  Installing the Power Supply
80000 - 29
4 Slot Cabinet
Shown 
						

							1. Installing the
Cabinet
1-17
SYSTEM CONFIGURATION - U SLOT
U Slot Configuration Guidelines
U Slot systems use software version 02.**.** or higher.
The total number of components you can install and connect
depends on power supply capacity and the System Load Factor.
Review the Configuration Guidelines at right and System Load
Factor Calculationson page 1-18 when configuring your sys-
tem. Also  read U Slot Default Settingson page 1-19. You may
find that the default setup is adequate for your needs.
Also see Where to Install the PCBs in your U Slot Systemon
page 2-2.
Notes for U Slot Software

U Slot (02.nn.nn) software is available with both 4 and 8 slot cabinets.
4 Slot Cabinets

Do not install more than 2 16DSTU PCBs installed under any circumstances.

The  rst 16DSTU PCB you install must be in the  rst slot.

You can install up to 
40 extensions
 maximum, as follows:
(2) 16DSTU PCBs = 32 digital extensions
(1) 8ASTU PCB = 8 analog extensions
Total = 40 extensions

You can install up to 
24 trunks
 maximum, as follows:
(3) 8ASTU PCBs = 24 analog trunks

Maximum con guration is 
48 ports
.

The total of all extensions and trunks cannot exceed 
48.

Always use the System Load Factor Table to check you system con guration.
8 Slot Cabinets

Do not install more than 2 16DSTU PCBs for each power supply.

The  rst 16DSTU PCB you install must be in the  rst slot (CN1).

You can install up to 
96 extensions
 maximum.

You can install up to 
48 trunks
 maximum.

The total of all extensions and trunks installed cannot exceed 
104
.

Maximum con guration is 
104 ports
.

8-slot cabinet require, A series PCBs, as follows:
CPU PCB P/N 80025A
Power Supply P/N 80005A16DSTU Digital Station PCB P/N 80021A8 ASTU 8 Port Analog Station PCB P/N 80041A4ASTU 4 Port Analog Station PCB P/N 80040A8ATRU 8 Port Analog Trunk PCB P/N 80011A4ATRU 4 Port Analog Trunk PCB P/N 80010A

Always use the System Load Factor Table to check your system con guration. 
						

							1-18
System Load Factor Calculations
To check your system configuration:
1. In the table at right, indicate the quantity for each item
installed in the 
Qty
column.
2. For each item, multiply the 
Qty
times the Load Factor and
enter the value in the 
Total Load
column.
3. Add all the values in the 
Total Load
column and enter the
value in 
Item 1
.
4. Determine the System Load Factor capacity of the power
supplies installed in your system and enter the total in 
Item 2
.
A 4-slot cabinet can have only 1 power supply. An 8-
slot cabinet can have up to 3 power supplies. You can-
not have more than two 16DSTU PCBs per power sup-
ply, regardless of System Load Factor calculations.
Exceeding the System Load Factor will cause the sys-
tem’s power supplies to automatically shut down.
5. Compare the entry in 
Item 2
to your entry in 
Item 1
. Item 1
must always be equal to or less than the entry in 
Item 2
.
Do not operate your system if the System Load Factortotal (
Item 1
) exceeds the allowable value (
Item 2
).
SYSTEM CONFIGURATION - U SLOT
System Load Factor Calculations
Description Load Factor Qty Total Load
16DSTU PCB 16
4ASTU PCB 8
8ASTU PCB 12
110-Button DSS Console 2
24-Button DSS Console 1
Total DSS Consoles installed cannot exceed 4.
2-OPX Module 3
Item 1: 
Total load for this con guration:
Item 2:
 If you have one
 power supply installed, enter 48.
If you have two power supplies installed, enter 80.
If you have three power supplies installed, enter 112.
(2 16DSTU PCBs maximum per power supply)
Note: An 8-Slot Cabinet can have up to 3 power supplies. You cannot
 have more than 
two 16DSTU PCBs per power supply, regardless of System Load Factor calculations.