NEC Neax 2400 Imx Wireless System Manual

CHAPTER 2 ND-70290 (E)
Pag e 2 4
Revision 3.0
INSTALLATION DESIGN
3. Cable Connection 
Figure 2-1  Related Equipment for Built-in PCS System (When using PA-4CSIC)
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
PIM
LT Back-
board
PInstallation cable
(SWVP50 lead)MDF
No.1
No.3 No.0
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
501
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25 No.0
No.1
No.2
No.3RB0
TB0
RB1
TB1
RB2
TB2
RB3
TB3RA0
TA0
RA1
TA1...

ND-70290 (E) CHAPTER 2
Page 25
Revision 3.0
INSTALLATION DESIGN
Note 1:
Maximum length of the cable to each ZT depends on the kind of cable (diameter) and the way of power
supply (Power supply from Built-in PCS system/Local power supply).
Power supply from Built-in PCS system (Without arrestor, when feed output is 48V) 
Local power supply
Note 2:Connection of the connector lead depends on the mounting location of CSINT circuit card. For more detail,
refer to Chapter 3, Circuit Cards.
Note 3:Below is the...

CHAPTER 2 ND-70290 (E)
Pag e 2 6
Revision 3.0
INSTALLATION DESIGN
Figure 2-2  Related Equipment for Built-in PCS System (When using PA-4CSIE)
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
a. When using PA-4CSIE
PIMInstallation cable
Back-
boardLT
PMDF
No.1
No.3 No.0
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
501
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25 No.0
No.1
No.2
No.3RB0
TB0
RB1
TB1
RB2
TB2
RB3
TB3RA0
TA0
RA1
TA1
RA2
TA2
RA3
TA3...

ND-70290 (E) CHAPTER 2
Page 27
Revision 3.0
INSTALLATION DESIGN
Note 1:
Maximum length of the cable to each ZT depends on the kind of cable (diameter) and the way of power
supply (Power supply from Built-in PCS system/Local power supply).
Power supply from Built-In PCS system (Without arrestor)
Local power supply (Without arrestor)
Power supply (With arrestor)
Local power supply (With arrestor)
Note 2:Connection of the connector lead depends on the mounting location of CSINT circuit card. For more...

CHAPTER 2 ND-70290 (E)
Pag e 2 8
Revision 3.0
INSTALLATION DESIGN
1.2 ZT (ZONE TRANSCEIVER)  AND ITS CONNECTION WITH U INTERFACE
1. General
This part explains how to connect the Zone Transceiver (ZT) when using the NT1.
2. Circuit Card
NAME OF CIRCUIT CARD 2W/4W REMARKS
PA - 4 C S I D 2 W
PA - 4 C S I F 2 W 

ND-70290 (E) CHAPTER 2
Page 29
Revision 3.0
INSTALLATION DESIGN
3. Cable Connection
AT TE NT ION
Contents
Static Sensitive
Handling
Precautions Required
PIM
LT Back-
board
PInstallation cable
(SWVP50 lead)MDF
No.1
No.3 No.0ZTDSU
Note 1:Maximum length of the cable to the DSU depends on the kind of cable (diameter) .
Note 2:Connection of the connector lead depends on the mounting location of CSINT circuit card. For
more detail,  refer to Chapter 3, Circuit Cards.
Note 3:Maximum length of the cable to each...

CHAPTER 2 ND-70290 (E)
Pag e 3 0
Revision 3.0
INSTALLATION DESIGN
1.3 BASIC KNOWLEDGE ON ZT INSTALLATION
1. Hypothetical Range of Radio Zone
When designing the image of a radio zone provided by a ZT, the radio zone can be drawn by using a specific
prefixed distance characteristics value. Provided that a ZT is installed on a wall, the hypothetical distance
characteristics range of the radio zone are as follows:
Indoor (General) : Radius of 49 ft (15 m) approximately
Indoor (floor and corridor with...

ND-70290 (E) CHAPTER 2
Page 31
Revision 3.0
INSTALLATION DESIGN
2. Image of ZT installation
Assuming a ZT is installed in a general office environment, one ZT can rarely cover the entire service area.
So, a general service area is composed of multiple ZTs. The diagrams below show the image of ZT
installation.
a. Single Floor Installation
ZTs are ideally installed at right angles or zigzag like spots on a dice.
b. Vertical Successive Floor Installation
It would be ideal to install ZTs at zigzag position...

CHAPTER 2 ND-70290 (E)
Pag e 3 2
Revision 3.0
INSTALLATION DESIGN
3. Radio Wave Propagation
Although radio waves used by the Built-in PCS System employ a digital signal of service frequency of
approximately 1.9 GHz band, types of radio waves and types of propagation involved with basic radio wave
propagation are considered to be the same as other analog radio waves.
 Types of radio waves
a. Direct waves: Radio waves that are propagated 
directly and linearly.
b. Reflected waves/
diffracted waves...

ND-70290 (E) CHAPTER 2
Page 33
Revision 3.0
INSTALLATION DESIGN
 Types of propagation
There are two major types of radio wave propagation: the line-of-sight propagation and the propagation
beyond the horizon. As opposed to a cellular phone, consideration must be given to the line-of-sight
propagation characteristics, where a ZT can be seen directly; as well as the propagation beyond the horizon,
where radio waves travel through walls, ceilings, partition on the same floor, or another floor for a...