Dahua SD42C Series User manual

4-inch Intelligent Speed Dome Installation Manual
Version 1.1.2

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Table of Contents
1INSTALLATION PREPARATION.......................................................................1
1.1 Basic Requirements.................................................................................................................1
1.2 Safety Check.............................................................................................................................1
1.3 Cable Requirements ................................................................................................................1
1.3.1 Video Cable Requirements .................................................................................................1
1.3.2 Power Supply Cable Requirements...................................................................................1
2SPEED DOME INSTALLATION.........................................................................3
2.1 Check Accessories..................................................................................................................3
2.2 Open Device .............................................................................................................................3
2.3 Initial Setup...............................................................................................................................3
2.4 DIP Switch Setup......................................................................................................................4
2.4.1 DIP Switch Location and Function ....................................................................................4
2.4.2 DIP Switch Setup .................................................................................................................5
2.4.3 Address Setup .....................................................................................................................5
2.4.4 Baud Rate and Parity Setup................................................................................................5
2.4.5 Terminal Matching Resistance Setup................................................................................6
2.5 Reset and SD Card Installation (Network Speed Dome)......................................................7
3CEILING MOUNT .............................................................................................10
3.1 Installation Components .......................................................................................................10
3.2 Installation Conditions ..........................................................................................................10
3.3 Installation Steps ...................................................................................................................10
4WALL MOUNT..................................................................................................13
4.1 Mounting Component............................................................................................................13
4.2 Installation Conditions ..........................................................................................................13
4.3 Installation Steps ...................................................................................................................13
5IN-CEILING MOUNT.........................................................................................16
5.1 Mounting Component............................................................................................................16
5.2 Installation Conditions ..........................................................................................................16

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5.3 Installation Steps ...................................................................................................................16
6APPENDIX ⅠTHUNDER PROOF AND SURGE PROTECTION
(OUTDOORS)..........................................................................................................19
6.1 Lightning Protection (Indoors) .............................................................................................19
7APPENDIX ⅡABOUT RS485 BUS.................................................................21
7.1 RS485 Bus Main Feature.......................................................................................................21
7.2 RS485 Bus Transmission Distance......................................................................................21
7.3The Problem in Practical Use ...............................................................................................21
7.4 RS485 Bus FAQ......................................................................................................................22
8APPENDIX ⅢTHE 24V AC WIRE DIAMETER AND TRANSMISSION
DISTANCE RELATION TABLE...............................................................................23
9APPENDIX Ⅳ12V AC WIRE GAUGE AND TRANSMISSION DISTANCE
RELATION TABLE..................................................................................................24
10 APPENDIX V WIRE GAUGE REFERENCE TABLE........................................26

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Welcome
Thank you for purchasing our speed dome!
Please read the following safeguards and warnings carefully before you install or use the
product!

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Important Safeguards and Warnings
1. Qualified Engineer Needed
The installation engineer or maintenance engineer shall have corresponding CCTV system
installation certificate or maintenance qualification certificate.
The installation engineer or maintenance engineer shall have qualification certificate for work
at height.
The installation engineer or maintenance engineer shall have the basic knowledge and
operation technique for low-voltage cable layout and low-voltage electronic cable connection.
Please read the installation manual carefully and keep it well for future reference,
We are not liable for any problems caused by unauthorized modifications or attempted repair.
2. Lifting Appliance Requirement
Please select the proper speed dome installation mode and use the lifting appliances at the
safety environment.
The lifting appliances shall have the enough capacity to reach the installation height.
The lifting appliances shall have safe performance.
The precaution measures include two types: Warning and Note.
Warning: It is to alert you there is an optional risk of death or series injury!
Note: It is to alert you there is an optional risk of damage or property loss!
Warning
1. All installation and operation here should conform to your local electrical safety codes. We
assume no liability or responsibility for all the fires or electrical shock caused by improper
handling or installation.
2. Be sure to use all the accessories (such as power adapter) recommended by manufacturer.
3. Do not connect several speed domes to one power adapter. It may result in overheat or fire
if it exceeds the rated load.
4. Before you connect the cable, install or uninstall, or begin the daily maintenance work,
please turn off the power and unplug the power cable.
5. Please make sure the produce is secure firmly on the wall or the ceiling.
6. Please turn off the power and unplug the power cable, If there is any smoke, disgusting
smell, or noise. Please contact your local retailer or customer service centre for help.
7. All the examination and repair work should be done by the qualified service engineers. We
are not liable for any problems caused by unauthorized modifications or attempted repair.

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Note
1. Safety Transportation
Heavy stress, violent vibration or water splash are not allowed during transportation, storage
and installation.
This series product must use split type package during the transportation.
We are not liable for any damage or problem resulting from the integrated package during
the transportation.
2. When device is malfunction
Shut down the device and disconnect the power cable immediately if there is smoke, abnormal
smell or abnormal function. Please contact your local retailer ASAP.
3. Do not try to dismantle or modify the device
There is risk of personal injury or device damage resulting from opening the shell.
Please contact your local retailer if there is internal setup or maintenance requirement.
We are not liable for any problems caused by unauthorized modifications or attempted repair.
4. Do not allow other object falling into the device
Please make sure there is no metal or inflammable, explosive substance in the speed dome.
The above mentioned objects in the device may result in fire, short-circuit or damage.
Please shut down the device and disconnect the power cable if there is water or liquid falling
into the camera. Please contact your local retailer ASAP.
Please pay attention to the camera. Avoid the sea water or rain to erode the camera.
5. Handle carefully
Do not allow this series product fall down to the ground.
Avoid heavy vibration.
6. Installation Environment Requirement
This series speed dome should be installed in a cool, dry place away from direct sunlight,
inflammable, explosive substances and etc.
This series product shall be away from the strong electromagnetism radiant, please keep it
away from wireless power, TV transmitter, transformer and etc.
7. Daily Maintenance
Please use the soft cloth to clean dust on the shell, or you can use soft cloth with cleaning
liquid to clean the shell and then use soft cloth to make it dry.
Do not use gasoline, dope thinner or other chemical material to clean the shell. It may result
in shell transfiguration or paint flake.
Do not allow the plastic or rubber material to touch the shell for a long time. It may result in
paint flake.

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1Installation Preparation
1.1 Basic Requirements
All installation and operation here should conform to your local electrical safety codes, fire
prevention laws and some related regulations.
Check if all the components are included according to the packing list.
Make sure if the application scene of the speed dome conforms to the installation
requirements. Please contact your dealer if you have any questions.
Please use the product according to the operating environment.
1.2 Safety Check
Make sure the installation site has enough space to hold the product and its mounting
components.
Please make sure the ceiling or wall can sustain 8X weight of the speed dome and its
mounting components.
Please make sure the wall is thick enough to install expansion bolts (Users need to purchase
separately).
It needs to guarantee the installation height shall be more than 6m if it is the laser speed
dome.
1.3 Cable Requirements
1.3.1 Video Cable Requirements
75 ohm.
Full cable with copper conductor.
95% knitted copper shield.
Please refer to Appendix Ⅱfor RS485 communication cable information.
International Model
Max Transmission Distance
(Ft\M)
RG59/U
750Ft (229M)
RG6/U
1,000Ft (305M)
RG11/U
1,500Ft (457M)
Note
The above can be applied to analog speed dome and network speed dome
International Mode
Max Transmission Distance
(M\Ft)
SYV-75-3
720P（25fps\30fps)：500M/1640Ft
720P（50fps\60fps)：300M/984Ft
1080P（25fps\30fps)：300M/984Ft
Note
The above can be applied to HDCVI speed dome
1.3.2 Power Supply Cable Requirements
Refer to “Appendix ⅢRelationship Table Between AC 24V Wire Diameter and Transmission
Distance”for AC 24V power supply device.

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Refer to “Appendix ⅣRelationship Table Between DC 12V Wire Diameter and Transmission
Distance”for DC 12V power supply device.

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2Speed Dome Installation
2.1 Check Accessories
Before installation, please check the accessories one by one according to the packing list.
Please make sure all the components listed are included.
2.2 Open Device
Note
This section is for analog speed dome, network speed dome and intelligent tracking speed dome.
Open the package and then take out the device. Remove the transparent cover and take out the
packing material EPE around the speed dome module. Please remove the paster from the
pedestal. See Figure 2-1.
Figure 2-1
2.3 Initial Setup
Address code: 1
Baud rate: 9600
Parity: None
120Ωmatched resistance: OFF

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2.4 DIP Switch Setup
2.4.1 DIP Switch Location and Function
The corresponding functions between analog speed dome and HDCVI speed dome are different,
which will be separately introduced below.
2.4.1.1 Analog Speed Dome
It is to take ceiling mount speed dome for example. Open the transparent cover of the device and
you can see there are two DIP switches on the PTZ, which are used to set speed dome address,
baud rate and parity. The location of DIP switch is shown in Figure 2-2.
Figure 2-2
2.4.1.2 HDCVI Speed Dome
It is to take ceiling mount speed dome for example. Open the transparent cover of the device and
you can see there are two DIP switches on the PTZ, which are used to set speed dome address,
baud rate. The location of DIP switch is shown in Figure 2-3.
Figure 2-3

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2.4.2 DIP Switch Setup
It has to set address number and baud rate before controlling the speed dome, the speed dome
will respond to those control commands after these settings are completed.
Note
For wall-mounted speed dome, it has to install back the transparent dome cover component
after taking out EPE and set DIP switch well.
It has to cut off the power and restart the device after related information has been reset,
which is to make new settings valid.
There are two DIP switches on the PTZ which are used to confirm the parameters of speed
dome address, baud rate and parity. When the switch is moved to ON as 1, then 1 is the lowest
bit and 8 is the highest bit for the address DIP setting; 1 is the lowest bit and 4 is the highest bit
for the baud rate and parity DIP setting.
Note
The intelligent speed dome can self-adapt to PELCO-D, PELCO-P and industrial standard
protocol, control protocol doesn’t need to be set via DIP switch.
2.4.3 Address Setup
The speed dome can use DIP switch to set address number, coding mode adopts binary coding.
1~8 bits are valid bit, the highest address bit is 255, the address label is shown in Figure 2-1,
please refer to Figure 2-1 for the address bit setup.
Figure 2-1
Address
1
2
3
4
5
6
7
8
1
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
1
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
2
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
3
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
4
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
5
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
6
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
7
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
8
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
……
…………………………………………………………………
254
OFF
ON
ON
ON
ON
ON
ON
ON
255
ON
ON
ON
ON
ON
ON
ON
ON
Table 2-1
2.4.4 Baud Rate and Parity Setup
The functions which need to be set between analog speed dome and HDCVI speed dome, which
will be introduced separately.
2.4.4.1 Analog Speed Dome
It is to set parity and baud rate of the speed dome. 1 and 2 bit is the baud rate setting bit while 3
and 4 bit is the parity setting bit. Please refer to Figure 2-2 for the label, refer to Table 2-2 and
Table 2-3 for settings.

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Figure 2-2
1
2
Baud Rate
OFF
OFF
9600bps
ON
OFF
4800bps
OFF
ON
2400bps
ON
ON
1200bps
Table 2-2
3
4
Parity
OFF
OFF
NONE
ON
OFF
EVEN
OFF
ON
ODD
ON
ON
NONE
Table 2-3
2.4.4.2 HDCVI Speed Dome
It is to set baud rate of the speed dome. Bit 1 and 2 is baud rate setting bit. Refer to Figure 2-3
for the label and refer to Table 2-4 for the setting.
Figure 2-3
1
2
Baud Rate
OFF
OFF
9600bps
ON
OFF
4800bps
OFF
ON
2400bps
ON
ON
1200bps
Table 2-4
2.4.5 Terminal Matching Resistance Setup
It is the connection mode of device terminal 120Ωresistance, terminal resistance 120Ωis
already equipped on the power panel, there are two connection modes, which is shown in Figure
2-4.

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Figure 2-4
Refer to Figure 2-5 for the default connection mode, at this moment, the jumper cap on the
power board is connected to the location 2~3 of the socket and 120Ω resistance hasn’t been
connected yet.
Figure 2-5
It needs to plug out the jumper cap from 2~3 location when it needs to connect to 120Ω
resistance, and then connect to the location of 1~2. In this case, 120Ωresistance is connected to
the circuit, which is shown in Figure 2-6.
Figure 2-6
2.5 Reset and SD Card Installation (Network Speed Dome)
You can see that the reset button is located on the PTZ mainboard (shown in Figure 2-7 and
Figure 2-8) after opening the device. The reset button is used for network system reset.

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Figure 2-7
Figure 2-8
The SD card of speed dome has to be installed on the camera module, which is shown in Figure
2-9. It is used for data storage.

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Figure 2-9
Note
Please contact our technical support if you have any confusion.

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3Ceiling Mount
3.1 Installation Components
The ceiling mount installation component is shown as in Figure 3-1.
Figure 3-1
3.2 Installation Conditions
The ceiling-mounted speed dome can be installed in the hard construction wall in the indoor
environments. Before the installation, please make sure:
The wall is thick enough to install the expansion bolt.
The ceiling can sustain at least 8x weight of the speed dome.
3.3 Installation Steps
There are two methods of cable outlet for ceiling mount:
Do not dig holes on the ceiling; pull the cable through side cable exit of the speed dome.
Dig holes on the ceiling; pull the cable through inside the ceiling.
Step 1
Confirm mounting position and cable outlet mode. Use the ceiling installation position map to dig
holes on the ceiling and then put the four plastic expansion bolts into the holes you just dug.
Step 2

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As it is shown in Figure 3-2, place the cable well according to the cable outlet mode. Connect the
corresponding power, video output, RS-485 control cable, alarm input and output port (according
to requirement), and then use insulated rubber tape to twine the cable connector well to make it
waterproof.
Note
The video port is covered with heat-shrinkable tube with high shrinkage ratio, it needs to
heat and shrink the tubes on both sides after the video port is well connected, which is to
make sure the video port is moistureproof and waterproof.
The step can be applied to ceiling-mounted, wall-mounted and in-ceiling speed dome.
Figure 3-2
Step 3
Use four screws together with insulated cover to fix the ceiling-mounted speed dome pedestal
component onto the ceiling, screws shall be twisted into the expansion bolts which have been set.
Step 4
AS it is shown in Figure 3-3, line up the arrow symbol on the speed dome external enclosure to
the bar symbol of the pedestal. Use three screws (provided) to secure the external enclosure on
the pedestal and fix firmly.

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Figure 3-3

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4Wall Mount
4.1 Mounting Component
The wall-mounted bracket and outdoor speed dome is shown as in Figure 4-1.
Figure 4-1
4.2 Installation Conditions
The wall-mounted speed dome can be installed in the hard construction wall in both indoor and
outdoor environments. Before the installation, please make sure:
The wall is thick enough to install the expansion bolt.
The wall can sustain at least 8X weight of the speed dome and bracket.
4.3 Installation Steps
Step 1
Dig a hole of 50mm diameter for cable exit in the mounting wall where the speed dome will be
installed.
Step 2
As it is shown in Figure 4-1, twist the adapter block into the internal thread of the wall-mounted
bracket, until it reaches the end and then fix the set screw firmly.

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Figure 4-1
Step 3
Pull the composite cable through the adapter block and pull it out of the other end of the wall-
mounted bracket. Line up the tab on the top of the external enclosure to the internal hole of the
adapter block and then push it to the end, and then tighten three screws of the adapter block
firmly. Please note this step is very important. Please make sure the screws are firm, otherwise,
it may result in falling risk of the intelligent speed dome.
Step 4
Take the mounting hole on the bottom of wall-mounted bracket (align the bracket cable outlet
hole with the circular hole on the wall), draw the punching position on the wall and dig holes, then
bury the expansion bolts into the holes you just dug.
Step 5
Connect the composition cable and then pull it through the hole in the wall. Use four hex screws
and flat washer to fix the wall-mounted bracket on the wall where the expansion bolts have been
inserted. Refer to Figure 4-2 for more details. So far, the speed dome installation has been
completed, which is shown in Figure 4-3.