NEC Neax 2400 Imx Wireless System Manual
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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 RA2 TA2 RA3 TA3 TB RB TB RB TA RA Modular rosette (eg. RJ-45) Modular plug ZT CSINT (LT cable) Champ connector leadRA TAMDF ZT Note:Confirm that the electric potential be- tween TA/TB and RA/RB (feed polari- ty) is normal before connecting ZT to modular rosette. TA / TB m i nu s RA/RB plus a. When using PA-4CSIC (Note 1)
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 specification of modular plug that is used for the connection to ZT. RJ-45 modular plug Diameter26 AWG 24 AWG 22 AWG 19 AWG Distance (No arrestor)762 m 1219 m 1676 m 2438 m 2500 ft 4000 ft 5500 ft 8000 ft Diameter26 AWG 24 AWG 22 AWG 19 AWG Distance (No arrestor)1189 m 1341 m 1676 m 2438 m 3900 ft 4400 ft 5500 ft 8000 ft TERMINAL NUMBERTERMINAL NUMBERFUNCTION POLARITY CSINT TERMINAL TERMINAL EQUIPMENTCSINT SIGNAL FEED 1 2 3 4 5 6 7 8a b c d e f g hNot used Not used Transmission Reception Reception Transmission Not used Not usedNot used Not used Reception Tra nsm ission Tra nsm ission Reception Not used Not used+ + - -- + + -RA TA TB RB (8)(1) Side view Front view Terminal number
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 TB RB RA TAMDFZT TB RBTA RA Modular rosette (eg. RJ-45) Modular plug ZT Note:Confirm that the electric potential between TA/TB and RA/RB (feed polarity) is normal before connecting ZT to modular rosette. TA / TB m i nu s RA/RB plus (Note 1) CSINT (LT cable) Champ connector lead Note 2
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 detail, refer to Chapter 3, Circuit Cards. Diameter26 AWG (0.4Φ)24 AWG (0.5Φ)22 AWG (0.65Φ)19 AWG (0.9Φ) Distance762 m 1219 m 1676 m 2438 m 2500 ft 4000 ft 5500 ft 8000 ft Diameter26 AWG (0.4Φ)24 AWG (0.5Φ)22 AWG (0.65Φ)19 AWG (0.9Φ) Distance1189 m 1341 m 1676 m 2438 m 3900 ft 4400 ft 5500 ft 8000 ft Diameter26 AWG (0.4Φ)24 AWG (0.5Φ)22 AWG (0.65Φ)19 AWG (0.9Φ) Distance300 m 500 m 800 m 1300 m 984 ft 1640 ft 2624 ft 4265 ft Diameter26 AWG (0.4Φ)24 AWG (0.5Φ)22 AWG (0.65Φ)19 AWG (0.9Φ) Distance350 m 600 m 800 m 1300 m 1148 ft 1968 ft 2624 ft 4265 ft
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 ZT depends on the kind (diameter) of cable. (Note 1) ( Note 3)
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 unobstructed view): Radius of 65 ft (20 m) approximately Outdoor: Radius of 164 to 196 ft (50 to 60 m) approximately The range shown represent model values. Adjustment of the radio zone should be needed to design the final drawings as the radio wave fluctuates unpredictably. It is fundamental that each radio zone be assigned to ensure sufficient overlap as shown below. Figure 2-3 Standard Installation Image Figure 2-4 High Traffic Installation Image
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 alternately by even-number and odd-number floors so that transparent radio waves penetrating floors or ceilings are sufficient enough to receive electric field to be a radio zone and transparent radio wave between floors is sensed. Figure 2-5 Image of ZT Installation 2ZTs 3ZTs 4ZTs 5ZTs
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 (indirect waves):Radio waves that are propagated by being reflected or diffracted from an obstacle, such as a wall and ceiling. c. Transmitted waves: Radio waves that travel through a wall, floor, partition, etc. d. Propagating corridor waves:Radio waves that travel along a corridor. (One type of reflected waves.) e. Re-entering building waves:Radio waves that go out of a building through a window, etc. and enter the building again. FLOOR CEILING CEILING WALL WALL WALL CORRIDOR ANOTHER BUILDING WINDOW, ETC.
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 wireless system used on private premises with a very small service area. Line-of-sight propagation a. Free space propagation: When a distance doubles, propagation loss increases by 6 dB. When a wavelength is halved, propagation loss increases by 6 dB. Plane earth propagation: When a distance doubles, propagation loss increases by 12 dB. (It is wavelength-independent.) b. Propagation beyond the horizon Multiple wave propagation: Propagation where numerous reflected and diffracted waves are received. (The original mobile communications use this type of propagation.)