CCTV SYSTEM
8
Part 5
【
Installation preparation
】
1.Basic requirements
◆
All electrical work should comply with the latest local electrical regulations, fire-proof pre cautions and
other relative legislations and regulations.
◆
Check whether accessories are as complete as the packing list shows. If not, please contact the supplier.
◆
Make sure that the place where it’s applied and installed meets the requirements of installation.
2
.
Check the structure of the place of installation.
◆
Make sure that there is enough room to install this product and its accessories.
◆
Make sure that the ceiling, wall and bracket where this product is installed should be able to endure 4 times
as heavy as speed dome.
3
.
Set DIP switch
◆
Set DIP switch according to speed dome IP address (Detailed information refers to page 30)
◆
Setting IP address by software address refers to page 21
【
Communication settings
】
4.Please keep all the packing material of dome
Please keep the packing material of dome after taking apart the package. If problems occur, please re-
pack it with the original package and send it back to manufacturer.
※
NOTE: Non-original package will cause the unexpected damage during transportation.
Part 6
【
Installation Guidance
】
A
、
Intelligent speed dome camera mainly has three types of installations:
①:
insert type
； ②:
ceiling type;
③:
rack mounting
B
、
In according to installation type, there are three ways on rack mounting below :
①:
wallhung type
②:
column type
③:
lifting type
Rack mounting fits for indoor or outdoor installation. Outdoor dome camera has an extra sun-shade shell. Dome
camera IP rate is 66.
Step a. Drill a hole in the ceiling
(
1
)
Use proper tools to drill a hole with 3mm diameter in the
center of installation place. On one side of the hole twist a
self-drilling screw and fix it on the ceiling.
(
2
)
Draw a circle with pencil in ceiling, and then remove the
material inside the circuit
.
1
、
Dome-Insert Installation conditions:
figure
（
1
）
figure
（
2
）
Insert dome camera is applied to indoor ceiling setting
(1)
At least 200mm above the ceiling
(2)
ceiling thickness is 5mm—42mm
(3)
ceiling must bear 4 times the weight of camera at least.
IR Intelligent Speed Dome Operation Manual ver2.0
37
Part 10
【
Common Knowledge on RS485 control bus
】
1
.
Basic features of RS485 control bus
：
◆
RS485 control bus is a half duplex communication bus whose impedance is 120Ω. Its load capacity
differs in the different connection interface, IC is 32-128 valid load (including main control equip-
ment and controlled equipments)
.
2. RS485 control bus transmitting distance
:
◆
When using 0.56mm(24AWG) twisted pair line as the communication electric cable, the maximal
transmission distances differ in different Baud rate setting. Maximum transmission distances and
corresponding Baud rates are shown in following table:
◆
The max transmission distance would be shortened in conditions like: when a slim communication
cable is used or the speed dome is used in the environment with strong electromagnetic interference or
there are many equipments connected to control bus, vice versa.
3. Connect mode and terminal impedance
◆
The RS485 industry
control bus requires daisy-chain connection mode between equipments, and 120Ω
terminal impedances should be connected at each end. The mode is shown in figure 41. Simplified
connection mode is shown in figure 42.The distance of D must be less than 23 feet (7 meters)
.
120
120
1#
2#
3#
4#
32#
120
120
1#
2#
3#
4#
32#
A+
A+
B-
B-
D
Figure41
Figure42
Baud rate
Maximum distance
Baud rate
Maximum distance
2400BPS
1800m
4800BPS
1200m
9600BPS
800m
19200BPS
600m
