COHU 3940 Analog iDome User manual

6X-1070 1
INSTALLATION
Cohu Electronics • 3912 Calle Fortunada • San Diego, CA 92123-1827
Phone: [phone] [email protected]
www.cohu-cameras.com
858-277-0221
July 17, 2006
FAX:
Installation Manual
COHU, INC. ELECTRONICS DIVISION
3940 Analog iDome and
3940 IP iDome
CAMERA/POSITIONER SYSTEM
Figure 1. iDome

6X-1070
2
INSTALLATION
LIST OF SECTIONS
LIST OF TABLES
LIST OF FIGURES
SECTION TITLE PAGE
1.0 GENERAL DESCRIPTION 3
1.1 Electrical Characteristics 3
1.2 Mechanical Characteristics 6
2.0 INSTALLATION 7
2.1 Installation Introduction 8
2.2 Equipment Supplied 12
2.3 Equipment Required But Not Supplied 14
2.4 Power Requirements 14
2.5 Pendant Mount Installation 16
2.6 Wall Mount Installation 16
2.7 Pole Mount Installation 17
2.8 Alternate Mounting Methods 19
2.9 Cabling Requirements 19
2.10 Analog Output Video Capture 24
2.11 Viewer GUI 24
3.0 OPERATION 25
4.0 MAINTENANCE 25
4.1 Firmware Uploads 25
4.2 Preventive Maintenance 25
5.0 SHIPPING AND STATIC
DISCHARGE CONSIDERATIONS 26
5.1 Unpacking & Receiving Inspection 26
5.2 Preparation for Shipment & Storage 26
5.3 Static Discharge Protection 27
FIGURE TITLE PAGE
1 iDome 1
2 Model Number Interpretation Diagram 6
3 iDome Dimensions 6
4 Basic Model Configurations 7
5 Model 8540B Test Stand 8
6 Typical Test Cables, 115 V ac 9
7 Typical RS-232 to RS-422 Converter 10
8 Quick Disconnect Assemby 11
9 Wall Mount Arm 11
10 Arm Dimensions 12
11 Typical Pole Mount 13
12 iDome Quick Disconnect Mounting 14
13 Strap Wrench 14
14 Pole Mount Dimensions 15
15 Mast Arm Mount 15
16 Interconnection Diagram, iDome to Equipment Cabinet (typ) 17
17 Local Operation Test Setups 18
18 Type CA-252A Cable, Stripped Power & Ethernet Leads 20
19 Type CA-252B Cable, 115 V ac Plug & RJ-45 Etnernet Plug 20
20 Type CA-252P Cable, All Stripped Leads 21
21 Type CA-252Q Cable, Stripped RS-422 Leads 21
22 Camera Connector Pinout Diagram 22
23 iDome Maintenance Features 24
TABLE TITLE PAGE
1 Specifications 4
2 Basic Mounting Arrangements 7
3 Required Cable Characteristics 15
4 Type CA-252 Cable Connectors 19
5Camera Ethernet Pinout vs. Standard
RJ-45 Pinout 22
6 24 V ac iDome Connector Functions 23
7 115 V ac iDome Connector Functions 23

6X-1070 3
INSTALLATION
1.0 GENERAL DESCRIPTION
The 3940 iDome series is an integrated camera/
positioner unit that combines a high performance
digital signal processing camera, pan-and-tilt, and
control receiver for communications into one inte-
grated package (figure 1). The 3940 is available in
two basic versions:
Analog Version: The Model 394x-x1xx has
NTSC video output and control functions are han-
dled by RS-422. Firmware changes can be upload-
ed via an Ethernet connection
IP Version: The Model 394x-x9xx communi-
cates via Ethernet and supplies video via Ethernet
IP video packets. On this IP version RS-422 is not
used. An IP dome is configured to connect to a hub.
Connecting it directly to a computer will require use
of a crossover cable or adapter.
Throughout this manual the entire assembly will
typically be referred to as the “iDome” or just the
“Dome.”
There will also be references to the “Analog”
version and the “IP” version when this distinction is
important.
Specifications are contained in table 1 and a
model number interpretation diagram is provided in
figure 2. This diagram can be used to interpret an
existing model number.
1.1 ELECTRICAL CHARACTERISTICS
The camera uses digital signal processing. It has
an internal source ID generator. Integration control
plus a built-in video storage card provides full color
continuous video even at very low light levels.
The iDome speeds are variable with maximums
of 250° per second for pan and tilt. Pan range is
a continuous 360 degrees while the tilt range is 0
to 90 degrees from the horizontal with auto-flip at
the 90° point. There are 64 preset positions with a
preset accuracy of 0.1 degree. When responding to
standard pan-preset or manual control, the iDome
can move with a pan speed of 250° per second.
This iDome will operate in temperature ranges
from -34° to +74° C and with winds of up to 90 mph.
The enclosure protects against salt, grime, dirt, and
moisture.
The integrated receiver/driver, contained within
the iDome, communicates using Cohu protocol
messages and will also control the digital DSP
camera functions. All iDome functions are operable
via either RS-422 or Ethernet serial communications
depending on the version.
In case of power failure, all 64 preset positions
are stored in nonvolatile memory.
Each iDome “address” within a surveillance sys-
tem can be selected electronically from the Monitor-
ing Center. There are no mechanical dip switches
to set at the camera, and each unit responds to the
central command only if addressed. This provides
greater integration flexibility for the designer and
more dynamic camera control for the operator.
Privacy zones can be set up using polygon
shaped windows drawn with the Viewer/Gui soft-
ware. These blanking windows are generated elec-
tronically within the digital signal processing (DSP)
and provide positive control of such areas.
Electronic image stabalization (EIS) is available
for one version of the two 23X camera modules and
it is a standard feature for the 35X camera module.
This EIS feature helps to minimize the effects of
slight vibrations on a Dome in certain mounting situ-
ations — such as when it is mounted on a tall pole.
1.1.1 Control Software
The analog and the IP versions of this Dome
each require different software to control them and
to view their video. Separate manuals cover these
Viewers. Refer to Cohu manual part number 6X-
1071 for the IP viewer/GUI manual and part number
6X-1072 for the analog viewer/GUI manual.

6X-1070
4
INSTALLATION
Table 1. Specifications
SYSTEM SPECIFICATIONS
PAN/TILT DRIVE
Angular Travel 360° continuous pan range
-90° to +5° tilt range
Pan Speed (preset) 250°/second
Pan Speed (manual) 0.1° to >80°/sec
Tilt Speed (preset) 80°/sec
Tilt Speed (manual) 0.1° to >40°/sec
Preset Accuracy >0.1°
Presets
64 preset positions (pan, tilt, zoom,
focus coordinates, & 24 character
ID label)
Video Tours
8 tours, each consisting of 32
presets with dwell time per preset
per tour
Sector Zones Up to 16 programmable zones in
the horizontal plane
Privacy Zones 8 zones can be set by drawing
polygons on the scene
Compass Direction
8 or 16 direction points (i.e., north,
NE, east, SE, south, SW, west, &
NW) can be displayed. Function
can be on/off, 3 sec, or permanent.
Absolute Position
Displayed in 0 to 359° azimuth &
+14° to -95° elevation. Function can
be on/off, 3 sec, or permanent.
Cloning
Positioner settings (presets, title,
etc) can be saved to a file for easy
duplication
TITLE GENERATION
Camera ID 2 lines of 24 characters
Preset ID 1 line of 24 characters
Sector Zone 1 line of 24 characters per zone
Privacy Zone 1 line of 24 characters per zone
Alarm Label 2 lines of 24 characters
Compass/Position 1 line. Includes compass direction
and absolute position
CAMERA SPECIFICATIONS
Imager 1/4 inch interline transfer color CCD
NTSC for analog version of iDome
Resolution
23X lens:
23X lens & EIS:
35X lens & EIS:
470 horizontal tv lines
470 horizontal tv lines
520 horizontal tv lines
Pixels
23X lens:
23X lens & EIS:
35X lens & EIS:
724 X 494
711 X 485
768 X 494
Progressive Scan
23X lens:
23X lens & EIS:
35X lens & EIS
Yes
Not Supported
Yes
Lens Zoom
23X lens:
23X lens & EIS:
35X lens & EIS
3.6 to 82.8 mm, f1.6 (w) f3.7(t)
3.6 to 82.8 mm, f1.6 (w) f3.7(t)
3.4 to 119 mm, f1.4 (w) f4.2(t)
Lens Hor. Angle of View
23X lens:
23X lens & EIS:
35X lens & EIS
54° (w) 2.5° (t)
41.5° (w) 1.9° (t)
55.8° (w) 1.7° (t)
Iris/Focus/Shutter
Operation Auto/Manual
Wide Dynamic Range
23X lens:
23X lens & EIS:
35X lens & EIS
On/off
Not supported
On/off
EIS at 5 Hz Suppression
23X lens:
23X lens & EIS:
35X lens & EIS
Not Supported
20 dB suppression 7 to17 Hz
20 dB suppression 7 to17 Hz
EIS at 16Hz
Suppression
23X lens:
23X lens & EIS:
35X lens & EIS
Not Supported
20 dB suppression 3 to13 Hz
20 dB suppression 3 to13 Hz
Digital Zoom Auto/manual (12X)
White Balance Auto/manual
Sync Crystal / phase adjust line lock
S/N >50 dB
Sensitivity (scene)
23X lens:
3 lux at 1/60 sec (color day)
0.2 lux at 1/4 sec (color day)
0.02 lux at 1/4 sec (mono night)
Sensitivity (scene)
23X lens & EIS:
2 lux at 1/60 sec (color day)
0.2 lux at 1/4 sec (color day)
0.01 lux at 1/4 sec (mono night)
Sensitivity (scene)
35X lens & EIS
1 lux at 1/60 sec (color day)
0.1 lux at 1/4 sec (color day)
0.01 lux at 1/4 sec (mono night)

6X-1070 5
INSTALLATION
Table 1. Specifications (continued)
VIDEO SPECIFICATIONS
VLIW/DSP TI TMS320DM642-600
Video Encoding MPEG4 ISO/IEC 14496-2 ASP;
RTP/UDP stack
Resolution
640 x 480 (VGA)
640 X 240 (2 CIF)
320 X 240 (1 CIF)
Frame Rates 30, 15, 8, 4, 2, 1
Bit Rates 64 k to 3 MB
Data Encoding RTSP/TCP/IP stack
Image Memory 96 MB SDRAM
Network 100Base T fast Ethernet connection
Image Storage 1 to 30 minutes, depending on
image management settings
Video Motion
8 separate windows, 1200 ROI per
window, 255 sensitivity levels, fixed
or progressive threshold settings.
Logo Insertion Supports bmp image insertion for
logo
Privacy / Masking Zones
Supports 64 polygon mask areas
(0.8° per side, with 0.1° resolution).
Each polygon mask can be turned
on/off at a user defined zoom
position. All video below & above
user-defined tilt angle can be
masked. Masking areas adjust in
size relative to zoom level.
ENVIRONMENTAL SPECIFICATIONS
Protection Rating
IP67 & NEMA 4X; sealed &
pressurized to 5 psi with dry
nitrogen
Ambient Temp. Limits
Operating:
Storage:
-34 to 50 °C (-27 to 122 °F)
-40 to 85 °C (-40 to 185 °F)
Humidity Up to 100 percent relative humidity
Vibration Conforms to NEMA TS2, paragraph
2.1.9
Shock Conforms to NEMA TS2 paragraph
2.1.10
Altitude
Sea level to equivalent of 3,000
meters / 10, 000 feet (508 mm/20
inches of mercury)
Air Contaminants
Withstands exposure to sand, dust,
fungus, & salt atmosphere, per MIL-
STD-5400T, paragraph 3.2.24.7,
3.2.24.8, & 3.2.24.9
Acoustics
Can withstand environments greater
than 150 dB continuously for 30
minutes
EMI FCC rules, part 15, subpart J, for
class B devices
COMMUNICATIONS SPECIFICATIONS
Data Format RS-422 (analog version)
IEEE 802.3U (IP version)
PTZ Latency <200 ms (typical)
Protocol Cohu
Firmware Stored in flash memory, uploaded
via Ethernet port
POWERS SPECIFICATIONS
Power Input
120 V ac (89 V ac to 135 V ac),
60 Hz
or 24 V ac 60 Hz
Power Consumption
Basic power consumption is 37 W.
P/T stepper motors add 23.
Heaters add 54 W.
Total maximum draw is 114 W with
heaters on and pan/tilt both
operating.
Power Interruption Conforms to NEMA TS2 paragraph
2.1.4
Power Transients/
Interruptions
Conforms to NEMA TS2 paragraph
2.1.6
MECHANICAL SPECIFICATIONS
Weight 14 lb
Dimensions See figure 3
Connector 18 pin MS type

6X-1070
6
INSTALLATION
1.2 MECHANICAL CHARACTERISTICS
Although the iDome is a single mechanical as-
sembly for installation purposes, it actually consists
of two primary subassemblies inside the dome: (1)
the camera and (2) the positioner.
All camera circuits are contained within a sealed
and pressurized environmental dome housing hav-
ing either a clear or smoked window through which
the camera lens views outside scenes. This dome
is fully covered by a sun shield spaced slightly away
from the housing itself. This minimizes heat buildup
due to sunlight. Vent holes at the top of the dome
must be kept clear to maintain air flow.
The iDome is a sealed and pressurized (dry
nitrogen) unit intended for indoor or outdoor use
under rain, snow, and other typical harsh weather
conditions.
Communications circuits contained within the
iDome are also protected from outdoor weather
conditions.
Figure 2. Model Number Interpretation Diagram
Figure 3. i Dome Dimensions

6X-1070 7
INSTALLATION
Figure 4. Basic Mounting
Configurations
A sealing type MS connector is used on the
housing and when mated with a similar MS type
cable connector a good environmental seal is pro-
vided for the mating pins and sockets.
A single multiconductor cable is routed to the
iDome location and then passed through the mount-
ing pendant to provide for all signal, video, and op-
erating power connections. Pin functions and layout
are shown in figure 22.
2.0 INSTALLATION
This section of the manual provides general
instructions about installation of the iDome using
various mounting arrangements.
The actual installation should be performed by a
qualified installation professional familiar with all the
local requirements for proper installation.
Always preplan the installation to be sure that all
required cabling and address assignments are com-
pleted. It may also be important to know the orienta-
tion of the iDome when it is mounted at its location.
The Schrader valve (figure 23) should be accessible
for adding dry nitrogen if necessary.
The model number label indicated a mechani-
cal home reference for all iDomes. Electrical home
for panning is 90° clockwise from this position as
viewed from above.
Table 2 lists the three basic mounting arrange-
ments. That pendant version consists of only the
iDome itself. The wall mount version of an iDome is
shipped with the wall mount arm. The pole mount
version is shipped with both the wall mount arm and
a pole mount bracket to which the wall mount arm
attaches.
Section 5 of this manual covers receiving inspec-
tion, packing and return requirements for a return to
the factory, and static discharge protections. Static
should mainly be of concern when working inside a
unit, and this manual does not cover disassembly of
the Dome.
Table 2. Basic Mounting Arrangements
MOUNT
CONFIG. iDOME ARM POLE
BRACKET
Pendant •
Wall • •
Pole • • •
NOTE: Dot ( • ) designates items supplied for each mounting
configuration.

6X-1070
8
INSTALLATION
WARNING
One versions of the iDome operate from voltages
that can be dangerous: model 3945 (115 V ac). Use
all appropriate care when installing and maintaining
this version of the iDome.
2.1 INSTALLATION INTRODUCTION
This section is a brief overview of the various
mounting types. The installation methods described
in this manual are a general overview of typical in-
stallations. Since the particular conditions at various
installation sites can vary widely, it is best if the ac-
tual installation is performed only by a professional
installer familiar with all local requirements.
2.1.1 Basic Mounting Configurations
An iDome can typically be mounted in any one of
three mechanical configurations (figure 4):
2.1.1.1 Pendant Mount
The basic configuration. The iDome hangs di-
rectly from a supplied 1.5-inch female NPT (national
pipe thread) support. This support must provide
for the connector of a multiconductor cable to pass
down through the 1.5-inch pipe nipple for mating
with the iDome.
2.1.1.2. Wall Mount
This mounting arrangement requires an arm that
bolts to the wall. The iDome hangs from the end of
this arm.
2.1.1.3. Pole Mount
This mounting arrangement is similar to the Wall
Mount — except that the mounting arm attaches to
a bracket fastened to a pole instead of directly bolt-
ing to a wall.
Figure 5. Model 8540B Test Stand (23-inch height).
( Model 8540A -not shown- provides 38-inch height)

6X-1070 9
INSTALLATION
Figure 6. Typical Test Cables, 115 V ac
IP Video Models
Analog Video Models
Firmware
Upload
Only

6X-1070
10
INSTALLATION
Table 2 summarizes the major items supplied for
each of these three installation methods. Each of
these installations will be expanded upon in a later
sections.
2.1.2 Installation Checklist
Before starting the installation of an iDome the fol-
lowing check lists should be read for an overview of
the process.
2.1.2.1 Analog Test Bench Checkout - To
check out an iDome and set its address at a test
bench before taking it into the field for installation,
use the following as a guideline:
1. Mount the iDome to a test stand (figure 5).
This stand is also available with another
set of three legs that increases it from a
20-inch height to a 38 inch height.
2. Connect a test cable (figure 6) to the connector
at the top of the dome
3. Connect the other end of the cable to the lap-
top. (An RS-232 to RS-422 converter will likely
be required. See figure 7. If the PC does not
have an RS-232 port it will then be necessary
to use a USB to RS-232 converter. See sec-
tion 2.10 for mention of a suitable USB/232
converter.)
CAUTION
Step 4 assumes that the iDome operates from
115 V ac power. This cable cannot be used with
an iDome operating from 24 V ac. Different con-
nector pins are used.
4. Connect the power plug of this cable to 115
V ac — (This cable cannot be used with
24 V ac iDomes.)
6. Install the iDome Analog Viewer software
on the laptop.
7. Establish the required communications
parameters
8. Set (or verify) the iDome address (When
installed in the system, each item of equip-
ment must have a unique address). Place
this address on the iDome with a removable
piece of masking tape.
9. Verify proper operation of all the various
functions controllable through the iDome
menus.
10. Release the iDome for field installation
after it has been determined all functions
are working.
2.1.2.2 IP Dome Test Bench Checkout
Checking out an IP version of the Dome re-
quires a PC running the required software. This
Figure 7. RS-232 to RS-422 Converter
This converter changes the RS-232 output of a PC to RS-422 for
communications with an iDome during field setup and testing.
A local PC with Win MPC software typically is used in this ap-
plication.
If this converer is plugged into the RS-232 output from an F/0
converter, 12 V dc operating power will likely have to be applied
to the 12 V dc terminal lugs. These F/O to RS-232 converters
typically do not have sufficient current on the handshake lines
to power the 232/422 converter. This application of the 232/422
converter would typically occur as part of a fixed installation in-
side an equipment cabinet located near an iDome. The 232/422
converter would be part of a type CA-295G cable.

6X-1070 11
INSTALLATION
includes both the Cohu Ateme and Cohu Viewer
software.
Connecting a PC directly to an IP iDome requires
an Ethernet crossover cable or adapter. When us-
ing one of the Cohu supplied cables that already
has a RJ-45 plug, an adapter will have to be used
so that another cable can make the connection to
the PC. In this case, either a crossover adapter
or a crossover cable can be used for the exten-
sion to the PC. But both should not be of the
crossover type. See interconnection diagram A in
figure 17.
2.1.2.3. Field Installation Procedure -
Use the following outline to become
familiar with the steps required to install an
iDome at its field location:
1. Route the cable to the mounting
location of the iDome.
2. Route the cable through any mounting
arms or brackets.
3. Remove the safety strap from the
iDome quick disconnect fastener
4. Thread the nipple portion of the quick
disconnect into the mounting bracket or
arm.
5. Route the cable down through this nipple
and attach it to the iDome connector
6. Wrap the connector with self sealing
waterproofing tape to ensure a long-term
trouble free installation.
7. Attach the dome half of the quick discon-
Figure 8. Quick Disconnect Assembly
Figure 9. Wall Mount Arm

6X-1070
12
INSTALLATION
nect to the half mounted to the arm or other
bracket. (If a particular orientation is required
be sure to mount it correctly positioned.)
8. Attach the safety strap back to the other half
of the quick disconnect.
9. Connect the laptop to the iDome at the junc-
tion box or equipment cabinet.
10. Verity (or set) the address and check all
operations.
11. Release the iDome for service.
2.2 EQUIPMENT SUPPLIED
Depending on the mounting configuration, sev-
eral variations of equipment can be supplied. Refer
to table 2 for a list of the basic differences between
models as they relate to mounting arrangements. A
mating connector is supplied with each camera.
2.2.1 PEDD (Pendant Mount). See figure 8.
Pendant mounting is the most basic of the three
mounting arrangements. The top half of a quick-dis-
connect assembly is threaded into a site supplied
1.5-inch NPT mount.
2.2.2 WALL (Wall Mount). See figure 9.
With a wall mount the iDome hangs from the
end of an arm which is attached to a wall. Figure
9 gives dimensions of the arm and adapter plate.
This wall must not only have four mounting bolts but
also a hole centered between these bolts through
which the cable must pass. A weather-tight gasket
should be used between the arm and wall.
2.2.3 POLE (Pole Mount). See figure 11.
Mounting to a pole is similar to mounting to a
Figure 10. Arm Dimensions

6X-1070 13
INSTALLATION
wall. For mounting to a pole, the four mounting bolts
are provided by a bracket. This bracket is attached
to the pole by stainless steel straps. This strapping
requires a special tensioning tool.
Cable routing when using a pole mount depends
upon the situation encountered. It can either be
directed down behind the pole bracket or, if arrange-
ments have been made for this, into the pole. Junc-
tion boxes, drip loops, and weather proof integrity
of the connectors must be considered before start-
ing the installation.
It is recommended that the iDome connector and
the cable connector attached to it be wrapped with a
self sealing weatherproof tape such as Coax Seal:
www.coaxseal.com
The web site for Coax Seal has complete infor-
mation about this product.
2.3 EQUIPMENT REQUIRED BUT NOT
SUPPLIED
Each installation will have unique requirements
for necessary cables, equipment, and miscella-
neous accessory items. This following is a list of the
most basic items required for installing at the site
location of the iDome. Some of these items can be
ordered with the iDome and thus would be provided
in those cases.
Figure 11. Typical Pole Mount

6X-1070
14
INSTALLATION
• 5/16-inch grade 316 stainless steel mount-
ing hardware
• Cable, multiconductor,
iDome to equipment cabinet
• Connector sealing tape
such as Coax Seal
• Junction box or equipment
cabinet for system connec-
tions
• Power source
• Viewer software
• Fiber optic or other type
system interconnection
• Cables, at system intercon-
nect cabinet
2.4 POWER REQUIRE-
MENTS
There are two versions of
the iDome related to power:
• 24 V ac (Model 3944-xxxx /
xxxx)
• 115 V ac (Model 3945-xxxx /
xxxx)
The model number label is attached to the bot-
tom of an iDome. (Electrical home for camera pan is
90° clockwise from this label viewed from above.)
Basic power consumption is 37 watts. When
both stepper motors are active, power consumption
becomes 60 watts. When the thermostat applies
power to the heaters, an additional 54 watts is con-
sumed. Thus the maximum power draw with stepper
motors both running and the heaters drawing power
is 114 watts.
The iDome heaters draw 54 watts during cold
conditions when the thermostat has them turned
on. Otherwise power consumption is 37 watts with
Figure 12. iDome Quick Disconnect Mounting
Figure 13. Strap Wrench

6X-1070 15
INSTALLATION
Table 3. Required Cable Characteristics
CONDUCTOR
FUNCTION TYPICAL CHARACTERISTICS
VIDEO RG-59/U (75 ohm), 100 % copper conductor,
95% minimum braided shield
RS-422 DATA 2 pair, twisted with overall shield, and a data
ground wire required. All 26 AWG minimum
Ethernet 2 pairs twisted with overall shield, 26 AWG
minimum (CAT5 cable or better)
POWER 3-conductor, 22 AWG minimum
Wire gauges depend on length of the cable run. This table
assumes a 115 V ac iDome and 250 foot cable run. The RS-
422 cable length is limited by signal deterioration
considerations to about 1000 feet. The Ethernet CAT5 cable
is limited to 328 feet due to packet collision considerations.
Use high quality cable suitable for the intended location.
the stepper motors idle or 60 watts when they are
active. Thus the maximum power draw at any one
time is 114 watts with the heaters on and pan/tilt in
operation.
All electrical connections to and from the iDome
are made through a single cable entering at the top.
A second version of the Camera is wired for 24 V
ac. Pins “B” (high) and “T” (low) are used to provide
24 V ac Camera operating power. If heaters are
installed, a separate 24 V ac is applied to pins C
(high) and K (low). This input will require that a mini-
mum of 2.7 amps be available (65 watts).
Ac ground for both heater power and camera
power of the 24 V ac inputs is pin “G.”
Table 3 lists basic characteristics that are re-
quired for a typical multiconductor cable intercon-
nected with the iDome.
It should be noted that RG-59 coaxial cable is
available in many different versions with a great va-
riety of characteristics, and many are not suitable for
use with video. Always be sure to use RG-59/U with
100 percent copper conductors and at least 95%
braid coverage.
The data conductors should be at least 26
gauge twisted pairs. With these data conductors it
is desired to minimize capacitance loading and thus
Figure 14. Pole Mount Dimensions
Figure 15 Mast Arm Mount

6X-1070
16
INSTALLATION
only an overall shield should be used — not indi-
vidual shields over the twisted pairs.
The power conductors should be as heavy a
gauge as possible. Cohu cables use 22 gauge con-
ductors for power. When high quality coaxial cable
is being used, these power conductors can become
the limiting factor for long cable runs.
This problem is especially acute with the 24 V
ac version of the iDome since it draws much more
current than the 115 V ac version. Thus they typi-
cally have shorter allowable cable runs unless the
power wiring is increased to a much larger size. To
minimize this problem, operating power and heater
power are supplied on separate inputs for a 24 V ac
iDome.
When the heaters turn on under thermostatic
control during low ambient temperatures the voltage
drops at the iDome due to resistance in the wires.
With the 24 V ac version this does not decrease
operating power since it is on a separate input, but
for the 115 V ac version, operating voltage cannot
be allowed to drop below the requirements of the
iDome when heaters are energized by the thermo-
stat.
Power wiring of greater sizes reduces this volt-
age drop when heaters cycle on and off. When
designing a custom installation it is best to perform
a few Ohm’s Law calculations to determine what is
the minimum allowable size for power wiring.
2.5 PENDENT MOUNT INSTALLATION
An iDome in the pendent configuration is its
most basic form. No mounting arms or adapters are
provided. The 1.5 inch NPT pipe thread on top the
dome is attached to an appropriate mount supplied
by the installer. Provisions must be made for the
cable to pass through this mount down through the
quick disconnect mount (figure 12) and onto the
connector on top the iDome.
2.6 WALL MOUNT INSTALLATION
With a wall-mount installation, a support arm
bolts to a wall and the iDome then hangs from the
end of that arm.
1. Remove the safety strap from the top half
of the quick disconnect (the half with the
threaded nipple attached).
2. Thread the quick disconnect nipple into the
mounting arm and tighten with a strap wrench
(figure 13).
3. Verify that the system cable is accessible for
connection to the iDome connector at the end
of the arm. This cable typically must pass
through the wall and into the arm.
4. Route the system cable out of the wall and
into the back of the wall mount arm. Continue
the cable through the arm and out the hole
at the iDome mounting location.
5. Install a weather tight gasket between the
arm and the surface of the wall.
6. Bolt the Arm to the wall.
7. Attach the cable plug to the iDome connec-
tor.
9. Orient the iDome properly and attach it to the
other half of the quick disconnect mounted
to the arm.
10. Reattach the safety strap.
11. Proceed to section 2.10.5, the checkout
procedure.
2.7 POLE MOUNT INSTALLATION
A pole mount installation is similar to the wall
mount installation except that the arm fastens to a
bracket (figure 14) attached to the pole instead of
directly to a wall.

6X-1070 17
INSTALLATION
Figure 16. Interconnection Diagram, iDome to Equipment Cabinet (typical)
1. Remove the safety strap from the top half
of the quick disconnect (the half with the
threaded nipple attached).
2. Thread the quick disconnect nipple into the
mounting arm and tighten with a strap wrench
(figure 13).
3. Verify that the system cable is accessible for
connection to the iDome connector at the end
of the arm. This cable typically must pass into
the back of the pole mount and then into the
arm - although various other cable routing
configurations are possible.
4. Route the system cable through the mount-
ing and out the hole at the iDome quick
disconnect.
5. Provide for weather tight mounting at the
pole mount bracket.
6. Bolt the Arm to the bracket.
7. Attach the cable plug to the iDome connec-
tor.
9. Orient the iDome properly and attach it to the
other half of the quick disconnect mounted
to the arm.
10. Reattach the safety strap.
11. Proceed to section 2.10.5, the checkout
procedure.

6X-1070
18
INSTALLATION
Figure 17. Local Operation Test Setups

6X-1070 19
INSTALLATION
Table 4. Cable CA-252 Connectors
2.8 ALTERNATE MOUNTING METHODS
Other mounting configurations are possible.
For example, figure 15 shows a mount suitable for
attaching to an arm suspended over a roadway or
other location. This mount straps to the arm and is
threaded for 1.5 inch NPT mounting. Installing this
arm mount requires the use of a strap tensioning
tool.
2.9 CABLING REQUIREMENTS
Table 4 lists typical cables available for use with
the iDome. This table summarizes the characteris-
tics of each cable. “Prepped” in the table indicates
that the wire leads are stripped and pre tinned with
solder for attachment to a terminal strip or similar
device.
Note that these cables are listed for use with 115
V ac iDomes only. Cables for the 24 V ac versions
of an iDome are special order.
Assembly/wiring diagrams for the cables are
shown in figure 18 through figure 21.
A cable connected to the iDome usually routes
to equipment in a nearby junction box or equipment
cabinet from where another cable continues back to
the system control station. Fiber optic cable is often
used for this link back to a central location.
Pre-plan all system cabling for an installation.
Before an iDome is bolted in place, the cable from
the junction box or cabinet must be available to at-
tach to the iDome at its mounting location.
If an IP video version of a 115 V ac iDome is to
be installed then either cable CA-252A or CA-252B
can be used.These are shown in figures 18 and 19.
If an analog video version of a 115 V ac iDome is
to be operated via its RS-422 pins on the connector
then either cable CA-252P or CA-252Q must be
used.These are shown in figures 20 and 21.
Cables for 24 V ac operation are currently spe-
cial order and do not appear in this manual. The
pinput configuration for 24 V ac, though, is shown
in figure 22.
Table 3 lists some basic characteristics required
for the conductors in a typical cable. Two consid-
erations related to the cables are degredation of
signal quality due to cable effects and interferrence
signals and loss of voltage on power wiring. It is
important that high quality copper conductor 75 ohm
coaxial cable be used.
Text continued on page 22
CABLE VIDEO
TYPE
MAIN
CONNECTOR
IP VIDEO
CONNECTION
ANALOG
VIDEO
CONNECTION
RS-422 DATA
CONNECTION
POWER
CONNECTION
CA-252A IP Cohu Type
1310230-011
Note 1
and
Note 2
stripped leads n/a n/a stripped leads
CA-252B IP RJ-45 n/a n/a 115 V ac Plug
CA-252P Analog stripped leads stripped leads stripped leads stripped leads
CA-252Q Analog RJ-45 Note 3 BNC PLUG stripped leads 115 V ac Plug
Note 1. Equivalent types: MS3116F-14-18S and Amphenol/Bendix PT06E-14-18S(SR)
Note 2. Main Connector mates with connector on permanently attached camera cable.
Note 3. Data uploading only. No IP video out.
Note 4. Maximum lenght of this cable is 250 feet.

6X-1070
20
INSTALLATION
CA252B
CA252A
Figure 18. Type CA-252A Cable, Stripped Power & Ethernet Leads
Figure 19. Type CA-252B Cable, 115 V ac Plug & RJ-45 Ethernet Plug
IP Video Out Cable
IP Video Out Cable