NEC Neax 2400 Ipx Installation Manual

NDA-24306 CHAPTER 1
Page 3
Revision 1.0
INTRODUCTION
Figure 1-1   Example of NAP
NAP- 200-004
Sheet 3/3
Installation of the Base Unit
2. INSTALLING THE BASE UNIT USING A SPECIAL STAND
START
Securing the Base Unit Secure the Base Unit onto the special stand per Figure 3-11.
Level Check Check the level of the Base Unit. If necessary, adjust the 
level by inserting spacers beneath the Base Unit.
END
SPECIAL STANDBOLT(M-10)
SPRING WASHER
PLAIN WASHER
FREE-ACCESS FLOOR
BASE-U
NAP Number
Sheet Number of NAP...

CHAPTER 1 NDA-24306
Pag e 4
Revision 1.0
INTRODUCTION
2.3 How To Follow Trees
This manual explains performance of a predetermined procedure (work contents covered in each NAP) in a
“Tree” format as shown in Figure 1-2. Before engaging in the intended work, be sure to understand the work
contents by tracing the given tree.
Figure 1-2   Example of a Tree
START
On the MDF, make temporary cross connections between the Trunk for Direct-In Termination 
(DIT) and an LC.
C.O. Line Incoming Call Station “B” dials...

NDA-24306 CHAPTER 1
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Revision 1.0
INTRODUCTION
Figure 1-3   Static Caution Indication
This manual provides “Static Caution” indicators (see Figure 1-3) on pages where work involving static-
sensitive components is described.
The 3M
 Model 8012 Portable Field Service Kit, shown in Figure 1-4, is recommended as an effective
countermeasure against static electricity.
Figure 1-4   3M Model 8012 Portable Field Service Kit
Note:3M
 is a registered trademark of Minnesota Mining and Manufacturing, Inc....

CHAPTE R 1   NDA-2 4306
P ag e 6
R evis io n 1.0
INT RODUCTION
2 .4   Figu re  a nd  Ta b le  Num bers
E ach  fig ure  and  t a ble  wi th in t his  m anu al  is  numbe red  as  shown  belo w .
1.   Figu res  and ta ble s i n  N A P
2.   Other  f igu res  and  t a bl es
2.5  Essen tia l/Cri tic al In fo rm ation
To  pr event  a cc iden ts  or  equ ipment  dama ge  fr om o ccu rr ing wh ile wo rk is  be ing  perf o rmed,  ea ch  m anu al
p rov id es  W ARN IN G , CAUTION , and 
Note indications to draw...

NDA-24306 CHAPTER 2
Page 7
Revision 1.0
CHAPTER 2 INSTALLATION DESIGN
1. GENERAL
This chapter provides information pertaining to installation design and preparation of the required installation
materials. The following topics are discussed:
 Environmental Requirements
 Floor Space
 Floor Load Requirements
 Equipment Room Requirements
 Power Supply Requirements
 MDF Requirements
 Installation Tools
 System Accommodation
 Installation Cables
2. ENVIRONMENTAL REQUIREMENTS
The PBX is sensitive to...

CHAPTER 2 NDA-24306
Pag e 8
Revision 1.0
INSTALLATION DESIGN
Note:* A short period means a period not exceeding three consecutive days (72 hours) or 15 days (360 hours) in a year.
2.2 Heat Generation from Switching Equipment
Figure 2-1 shows heat generation from the switching equipment with respect to current consumption.
Figure 2-1   Heat Generation from Switching Equipment for the PBXTable 2-1  Temperature and Humidity
TEMPERATURERELATIVE
HUMIDITYREMARKS
During OperationsNormal Operations5°C ~ 30°C...

NDA-24306 CHAPTER 2
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Revision 1.0
INSTALLATION DESIGN
3. FLOOR SPACE
1. The PBX requires floor space for the following system equipment:
 Switching Equipment (Module Group)
 Maintenance Administration Terminal (MAT)
MDF
 Rectifier
 Batteries
 Attendant Console
2. The required floor space for the various equipment rooms is as follows.
 Switching Equipment Room: For installing the Module Group, MAT, MDF and Rectifier
 Battery Room: For installing Batteries
 Operator Room: For installing an...

CHAPTER 2 NDA-24306
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Revision 1.0
INSTALLATION DESIGN
5.3 Ceiling
1. Switching Equipment Room
 The required ceiling height is more than 2.3 meters (7.5 feet).
5.4 Lighting Facilities
1. Switching Equipment Room
 Fluorescent lamps are recommended.
 No less than 200 lux at the floor level is necessary.
2. Operator Room
 Fluorescent lamps are recommended.
 No less than 200 lux at the floor level is necessary.
3. Battery Room
 Anti-explosion type lamps must be utilized.
 No less than 150 lux...

NDA-24306 CHAPTER 2
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Revision 1.0
INSTALLATION DESIGN
6.2 Current Consumption
The PBX operates on -48 V ±5 V DC which is supplied from external power equipment (the rectifier and the
battery).
Various DC voltages required within the system are provided by the DC-DC converter in each module. The DC-
DC converter, upon receiving the -48 V DC source power, converts it into various DC voltages and supplies
them to the associated circuits.
Figure 2-2 shows the current consumption of the PBX.
Figure 2-2...

CHAPTER 2 NDA-24306
Pag e 1 2
Revision 1.0
INSTALLATION DESIGN
6.3 Power Distribution Box Requirements
The Power Distribution Box (PDB) should be installed with the following considerations:
1. The AC power source service outlet and the fuse for the junction box should be provided independently of
any equipment other than the switching equipment.
2. A warning notice should be attached to be PDB circuit breaker so that it will not be turned off accidentally.
3. The Power Distribution Box should be...