COHU 3920 SERIES User manual

6X-1026E 1
INSTALLATION AND OPERATION 3920 iDOME
Installation and Operation Manual
COHU, INC. ELECTRONICS DIVISION
3920 SERIES
iDOME CAMERA/POSITIONER SYSTEM
Figure 1. iDome
www.cohu-cameras.com
[email protected]
June 21, 2012
Technical Manual 6X-1026E
www.cohu-cameras.com/content/contactus

6X-1026E
2
INSTALLATION AND OPERATION
3920 iDOME
TABLE
OF CONTENTS
LIST OF TABLES
LIST OF FIGURES
FIG. TITLE PAGE
1 iDome 1
2 Model Number Interpretation Diagram 4
3 Dimensions, 3920 5
4Basic Mounting Congurations 6
5 Model 8540B Test Stand 7
6 Type CTC-29 Cable, Test/ Setup, Wiring Diagram 8
7 Typical RS-232 to RS-422 Converter 8
8 Type CTC-33 Cable, 9200 Control Panel Connection 9
9Quick Disconnect Assemby 10
10 Wall Mount Arm 10
11 Arm Dimensions 11
12 Typical Pole Mount 12
13 iDome Quick Disconnect Mounting 13
14 Strap Wrench 14
15 Pole Mount Dimensions 14
16 Mast Arm Mount 14
17 Intreconnection Diagram, iDome to Local Control Panel 15
18 Interconnection Diagram, iDome to Equipment Cabinet 16
19 Cable CA-292A 24 Vac (RS-232) All Prepped Leads 19
20 Cable CA-292B 24 Vac (RS-232) Prepped/D9/BNC 19
21 Cable CA-293A 24 Vac (RS-422) All Prepped Leads 20
22 Cable CA-293B 24 Vac (RS-232) Prepped/D9/BNC 20
23 Cable CA-293M 115 Vac (RS-422) RJ-45/Prepped/BNC 21
24 Cable CA-295E 115 V ac (RS-422), All Prepped Leads 22
25 Cable CA-295F 115 Vac (RS-422) Plug, Prepped, BNC 22
26 Cable CA-295G 115 Vac (RS-422) Plug, 422-232, BNC 23
27 Cable CA-295H 115 Vac (RS-232) Single AMP Connector 23
28 Cable CA-295M 115 Vac (RS-232) Plug, RJ45, BNC 24
29 Cable CA-296A 115 V ac (RS-232), All Prepped Leads 25
30 Cable CA-296B 115 Vac (RS-232) Plug, Prepped, BNC 25
31 Cable CA-296C 115 Vac (RS-422) Plug, D9F, BNC 26
32 iDome Pin Layout and Functions 27
33 Typical About WinMPC Screen 29
34 Typical WinMPC Main Screen 29
35 Typical WinMPC Communications Setup Screen 30
36 iDome Maintenance Features 33
SECTION TITLE PAGE
1.0 GENERAL DESCRIPTION 3
1.1 Electrical Characteristics 3
1.2 Mechanical Characteristics 4
2.0 INSTALLATION 5
2.1 Installation Introduction 6
2.2 Equipment Supplied 9
2.3 Equipment Required But Not Supplied 12
2.4 Power Requirements 13
2.5 Pendant Mount Installation 16
2.6 Wall Mount Installation 16
2.7 Pole Mount Installation 17
2.8 Alternate Mounting Methods 17
2.9 Testing Cables 16
2.10 System Cabling Requirements 17
2.11 GUI Interface 26
3.0 OPERATION 30
3.1 Local Panel Control 30
3.2 Local Laptop PC Control 31
4.0 MAINTENANCE 31
4.1 Preventive Maintenance 31
5.0 SHIPPING AND STATIC DIS-
CHARGE CONSIDERATIONS 32
5.1 Unpacking & Receiving Inspection 32
5.2 Preparation for Shipment & Storage 32
5.3 Static Discharge Protection 32
TABLE TITLE PAGE
1Basic Mounting Arrangements 5
2 Required Cable Characteristics 14
3 Common System Cables Used 18
4 iDome Connector Functions 28
5 Communications Settings 28
6Specications 34

6X-1026E 3
INSTALLATION AND OPERATION 3920 iDOME
NOTE: This equipment has been tested and found to comply with the
limits for a Class A Digital Device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communica-
tions. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct
the interferecne at his own expense.
CAUTION: Changes or modications to
this device not expressly approved by
Cohu Electronics could void the user’s
authority to operate the device.
This device complies with Part 15 of the
FCC Rules. Operation is subjected to the
following two conditions: (1) this device
may not cause harmful interference and (2)
this device must accept any interference
received, including interference that may
cause undesired operation.
1.0 GENERAL DESCRIPTION
The iDome series is an integrated camera/posi-
tioner unit that integrates a high performance digital
signal processing camera, pan-and-tilt, and control
receiver for communications into one integrated
package (gure 1).
Throughout this manual the entire assembly will
typically be referred to as the “iDome.”
Specications are contained in table 6 at the end
of this manual and a model number interpretation
diagram is provided in gure 2. This diagram can
be used to interpret an existing model number. An
iDome can be operated via either RS-232 or RS-
422 communications depending on which pins of
the connector are used. Thus there is no model
number designation to reect a choice for the com-
munications mode.
WARNING
Two versions of the iDome operate from volt-
ages that can be dangerous: model 3925 (115
V ac) and model 3923 (230 V ac). Use all
appropriate care when installing and main-
taining either of these versions of the iDome.
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-ip 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 mes-
sages and will also control the digital DSP camera
functions. All iDome functions are operable via
either RS-232 or RS-422 serial communications.
The iDome is fully compatible with existing Cohu
controllers. 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 exibility for the designer and
more dynamic camera control for the operator
1.1.1 Control Software
WinMPC
WinMPC Graphical User Interface (GUI) software
is available for setting the address and performing
eld tests when connected to a single camera. (It
cannot be used to control more than one camera at

6X-1026E
4
INSTALLATION AND OPERATION
3920 iDOME
Figure 2. Model Number Interpretation Diagram
MODEL NUMBER INTERPRETATION DIAGRAM
424 Vac
5115 Vac
5 NTSC 35X Day/Night EIS
7PAL Phase Adjust Line Lock
8 PAL 35X Day/Night EIS
1Cohu Protocol
 American Dynamics
 Pelco D
 Ultrak
 Vicon
 Javelin
 Kalatel
 Philips / Bosch
2NTCIP Protocol
0Clear
1Smoked
PEND
POLE
WALL
DSP color/mono 1/4 inch
progressive scan dome
camera with zoom lens
Low Pressure Indicator
Heaters
Variable Speed
360° pan
Typical Protocol
Selections
EIS is Electronic Image Stabilization
392×—××0×—××××
POWER
SERIES
VIDEO
PROTOCOL
FEATURES
DOME
MOUNT
a time.) The WinMPC software can be obtained at
no cost from either the Cohu-Cameras.com web site
or by mail on CD.
CAMS
The CAMS software is intended for controlling
multi-iDome systems when the Cohu MPC Master
Control Panel is the central control “intelligence” for
the system. All control and response commands
among the various equipment in the system pass
through the Master Control Panel.
NetCAMS
The NetCAMS software is intended for controlling
multi-iDome systems when a Windows based PC is
the central control “intelligence” for the system. All
control and response commands among the vari-
ous equipment in the system pass through the Net
Cams Server.
1.2 MECHANICAL CHARACTERISTICS
Although the iDome is a single mechanical assem-
bly 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
having either a clear or a 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 ow.
Figure 3 gives dimensions of the iDome.
The iDome is a sealed and pressurized (dry nitro-
gen) unit intended for indoor or outdoor use under
rain, snow, and other typical harsh weather condi-
tions.
Communications circuits contained within the
iDome are also protected from outdoor weather
conditions.
A sealing type MS connector is used on the hous-
ing and when mated with a similar MS type cable
connector a good environmental seal is provided for
the mating pins and sockets.

6X-1026E 5
INSTALLATION AND OPERATION 3920 iDOME
Figure 3. Dimensions, 3920 iDome
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 gure 32.
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
qualied installation professional familiar with all the
local requirements for proper installation.
Table 1. Basic Mounting Arrangements
MOUNT
CONFIG. iDOME ARM POLE BRACKET
Pendant •
Wall • •
Pole • • •
NOTE: Dot ( • ) designates items supplied for
each mounting conguration.

6X-1026E
6
INSTALLATION AND OPERATION
3920 iDOME
Figure 4. Basic Mounting
Congurations
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 (gure 36) 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 1 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.
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 Congurations
An iDome can typically be mounted in any one of
three mechanical congurations (gure 4):
2.1.1.1 Pendant Mount - The basic conguration.
The iDome hangs directly 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 bolting to a wall.
Table 1 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
following check lists should be read for an overview
of the process.
2.1.2.1 Test Bench Checkout - To check out
an iDome and set its address at a test bench
before taking it into the eld for installation, use the
following as a guideline:
1. Mount the iDome to a test stand (gure 5).
This stand is also available with another
PENDANT MOUNT
WALL MOUNT
POLE MOUNT

6X-1026E 7
INSTALLATION AND OPERATION 3920 iDOME
set of three legs that increases it from a
20-inch height to a 38 inch height.
2. Connect the test cable (gure 6) to the
connector at the top of the dome
3. Connect the other end of the cable to the
laptop. (Either a test cable with integral
RS-232 to RS-422 converter or separate
converter must be used. See gures 6
and 7.)
CAUTION
Step 4 assumes that the iDome operates from 115 V
ac power. If a 230 V ac iDome is to be operated from
this cable, a 115/230 adapter will have to be used.
This cable cannot be used with an iDome operating
from 24 V ac. Different connector pins are used.
4. Connect the power plug of this cable to
115 V ac — or for a 230 V ac iDome, re-
move the115 volt plug and replace it with
a 230 V ac plug. (This cable cannot be
used with 24 V ac iDomes.)
5. Connect a tv monitor to the cable. This
monitor must be terminated with 75
ohms. Monitors typically have a rear
panel switch to select either 75 ohms or
no termination (Only the end of the coax
cable can be terminated with 75 ohms.
Any other equipment connected on the
cable in a loop-through arrangement must
present a high impedance to the line.)
6. Install Win MPC software on the laptop.
(See section 2.11.1 for details about using
Win MPC.)
7. Establish the required communications
parameters
8. Set (or verify) the iDome address (When
installed in the system, each item of
equipment must have a unique address).
Place this address on the iDome with a
removable piece of masking tape.
Figure 5. Model 8540B Test Stand (23-inch height).
( Model 8540A -not shown- provides 38-inch height)

6X-1026E
8
INSTALLATION AND OPERATION
3920 iDOME
Figure 6. Type CTC-29 Cable , Test/Setup, Wiring Diagram
Figure 7. Typical 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 eld 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 con-
verter, 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 sufcient 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 xed installation inside an equipment
cabinet located near an iDome. The 232/422 converter would be
part of a type CA-295G cable.
232
D9
FEMALE
B & B
Model 422PP9TB
B&B Electronics
707 Dayton Road
PO Box 1040
Ottawa IL 61350
www.bb-elec.com
[email protected]
+12V
GND
RD(B) RD(A)
TD(A)
TD(B)
422
CONVERTER
(Also Available from Cohu as P/N 3010100-001)
Rx-
Rx+
Tx+
Tx-
TO iDome
MAY BE REQUIRED
SEE TEXT

6X-1026E 9
INSTALLATION AND OPERATION 3920 iDOME
Figure 8. Type CTC-33 Cable , 9200 Control Panel Connection,
Test/Setup, Wiring Diagram
9. Verify proper operation of all the various
functions controllable through the Win
MPC menus.
10. Release the iDome for eld installation
after it has been determined all functions
are working.
2.1.2.2. Field Installation Procedure - Use the
following outline to become familiar with the steps
required to install an iDome at its eld 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 dis-
connect 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
waterproong tape to ensure a long-term
trouble free installation.
7. Attach the dome half of the quick discon-
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
junction 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 conguration, several
variations of equipment can be supplied. Refer to
table 1 for a list of the basic differences between
models as they relate to mounting arrangements.

6X-1026E
10
INSTALLATION AND OPERATION
3920 iDOME
Figure 9. Quick Disconnect Assembly
Figure 10. Wall Mount Arm
ARM
WALL
Route system
cable through
hole in wall
into Arm
Use weather-tight gasket
between Arm and wall
1.5 NPT
for dome
quick disconnect
adapter

6X-1026E 11
INSTALLATION AND OPERATION 3920 iDOME
2.2.1 PEND (Pendant Mount). See gure 9.
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 gure 10.
With a wall mount the iDome hangs from the end
of an arm which is attached to a wall. Figure 11
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 gure 12.
Mounting to a pole is similar to mounting to a 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.
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.
2.2.4 Connector Sealing
Even though the connector used with this camera
is designed to maintain a weather tight seal with its
mating system cable plug, it is recommended that
for additional protection against moisture in severe
conditions a sealing wrap be used on the connec-
tors.
Coax Seal is the recommended product:
www.coaxseal.com
[email protected]
United States: 1-800-241-8171
or International: 1-828-293-2222
Figure 11. Arm Dimensions
O2.0
O0.375
(TYP 4 PLACES)
4.50
0.75
0.75
6.50
8.0
1.75
6.0
1.5 NPT
1.75
2.0
17.75
3.0
UNLESS OTHERWISE NOTED ALL DIMENSIONS IN INCHES
2.0

6X-1026E
12
INSTALLATION AND OPERATION
3920 iDOME
This product is available from a variety of com-
mercial supply houses, consumer stores, and in the
U.S. Government supply channels as GSA Sched-
ule GS-07F-5739R
This product is a plastic tape-like material sepa-
rated by a paper divider in its roll to prevent bonding
to itself before use. After this material is wrapped
around a connector, it forms a permanent weather-
tight seal.
The cable and connectors should be clean and dry
before wrapping with Coax-Seal.
Use a full wrap of this tape on the cable at the be-
ginning. Then continue with a diagonal half overlap
wrap up to the iDome housing. Then add a full wrap
at the end of the coverage.
Squeeze together the wrapping so that it forms a
tight bond both to itself and the mating connectors.
The web site for Coax-Seal has complete informa-
tion about this product.
2.3 EQUIPMENT REQUIRED BUT NOT
SUPPLIED
Each installation will have unique requirements for
necessary cables, equipment, and miscellaneous
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.
• 5/16-inch grade 316 stainless steel mount-
ing hardware
• Cable, multiconductor, iDome to equip-
ment cabinet
Figure 12. Typical Pole Mount
ARM
DOME
POLE MOUNT

6X-1026E 13
INSTALLATION AND OPERATION 3920 iDOME
• Connector sealing tape such as Coax Seal
• Junction box or equipment cabinet for sys-
tem connections
• Power source
• RS-422 or RS-232 data interconnection as
required
• Optional local control panel for mainte-
nance and setup purposes
• Fiber optic or other type system intercon-
nection
• Cables, at system interconnect cabinet
• Win MPC test and setup GUI
• Operating software for control — such as
CAMS or NetCAMS GUI
2.4 POWER REQUIREMENTS
There are three versions of the iDome related to
power:
• 115 V ac (Model 3925-xxxx-x)
• 230 V ac (Model 3923-xxxx-x)
• 24 V ac (Model 3924-xxxx-x)
The model number label is attached to the bottom
of an iDome. (Electrical home for camera pan is 90°
clockwise from this label viewed from above.)
At 120 V ac 60 Hz the iDome heaters draw 72
watts during cold weather when the thermostat has
Figure 13. iDome Quick Disconnect Mounting
Figure 14. Strap Wrench
See section 2.6 and gure 11
Safety
Strap
Sunshield
(Camera Below)
Lock Bolt
(2)
1.5 NPT Nipple

6X-1026E
14
INSTALLATION AND OPERATION
3920 iDOME
Table 2. Required Cable Characteristics
Power for 115 and 230 V ac versions of the iDome
use the same connector pins (“U” hot/high and “T”
low/neutral). But a camera is never capable of being
operated from both of these voltages. It will be wired
for either 115 V ac or 230 V ac.
A third 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 minimum of 2.7
amps be available (65 watts).
Ac ground for 24 V ac in all cases is pin “G.”
Table 2 lists basic characteristics that are required
for a typical multiconductor cable interconnected with
the iDome Camera.
It should be noted that RG-59 coaxial cable is avail-
able in many different versions with a great variety
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 only an
overall shield should be used — not individual shields
over the twisted pairs.
Figure 15. Pole Mount Dimensions
Figure 16. Mast Arm Mount
them turned on. Otherwise power consumption is
27 watts with the stepper motors idle or 50 watts
when they are active. Thus the maximum power
draw at any one time is 122 watts at 120 V ac.
All electrical connections to and from the iDome
are made through a single cable entering at the
top.
CONDUCTOR
FUNCTION 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 min
POWER 3-conductor, 22 AWG
Note: RS-232 requires only one pair of twisted wires with gnd.

6X-1026E 15
INSTALLATION AND OPERATION 3920 iDOME
Figure 17. Interconnection Diagram, iDome to a Typical Local Control Panel (optional)
FRONT OF TYPICAL LOCAL CONTROL PANEL
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 with 115 V ac
iDomes (and for the 24 V ac versions).
When the heaters turn on under thermostatic
control during low ambient temperatures the voltage
drops at the iDome due to resistance in the wires.
This voltage cannot be allowed to drop below the
operating requirements of the iDome.
Power wiring of greater sizes reduces this voltage
drop when heaters cycle on and off. When design-
ing 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.
115 V ac iDome
operating with
RS-422 data
CABLE
CA295H
LINKS TO
CENTRAL
CONTROL
STATION
NOTE: THE VIDEO LINE
MUST BE TERMINATED
WITH 75 OHMS FOR
PROPER OPERATION
NOTE: Use of this panel or a similar type panel
is optional. They are used only when on-site
control of an iDome is desired for setup
and maintenance operations
115 V ac
Power
422
or 232

6X-1026E
16
INSTALLATION AND OPERATION
3920 iDOME
Figure 17. Interconnection Diagram, iDome to Equipment Cabinet (typical)
Also note that 24 V ac versions of the iDome draw
signicantly more current and thus typically have
shorter allowable cable runs unless the power wiring
is increased to a much larger size. Operating power
and heater power are on separate inputs for a 24 V
ac iDome.
For a 230 V ac version of the iDome, it is likely
that the coaxial cable would be the limiting factor for
cable length — since these iDomes draw half the
current of a 115 V ac version.
2.5 PENDENT MOUNT INSTALLATION
An iDome in the pendent conguration 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 (gure 13) 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 (gure 14).
3. Verify that the system cable is accessible
for connection to the iDome connector at
the end of the arm. This cable typically
TYPICAL INSTALLATION
FO CABLE
POWER
CORD
75 OHM
TWISTED PAIR
SERIAL DATA
WIRES
NOTE: THE VIDEO LINE
MUST BE TERMINATED
WITH 75 OHMS FOR
PROPER OPERATION
COAX
115
VAC
CABLE
CA295F
(LUGS ADDED)
FO
115 V ac iDome
operating with
RS-422 data
CONDUIT
CONDUIT
75 OHM
VIDEO IN
RS422
DATA
TERMINAL
STRIP
FIBER OPTIC
TRANSCEIVER
EQUIPMENT CABINET

6X-1026E 17
INSTALLATION AND OPERATION 3920 iDOME
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 loca-
tion.
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 con-
nector.
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 2.11.5, 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 (gure 15) attached to the pole instead of
directly to a wall.
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 (gure 14).
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 congurations are
possible.
4. Route the system cable through the
mounting 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 con-
nector.
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 2.11.5, the checkout
procedure.
2.8 ALTERNATE MOUNTING METHODS
Other mounting congurations are possible. For
example, gure 16 shows a mount suitable for at-
taching 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 TESTING CABLES
Two cables are available for test and setup pur-
poses:
CTC-29 — A 115 V ac cable for connection
to an RS-232 iDome
CTC-33 — A cable intended for use with a
Cohu model 9200 control panel.
2.10 SYSTEM CABLING REQUIREMENTS
Table 3 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 some of these cables are listed for use
with 115 V ac ntsc iDomes; however, certain of
these 115 V ac cables can be used with a 230 V ac
PAL version of the iDome. The 115 and 230 ver-
sions of the iDome use the same pins on the con-

6X-1026E
18
INSTALLATION AND OPERATION
3920 iDOME
Table 3. Common System Cables Used
nector for application of power. The cable drawings
in this manual are noted as for 230 V ac use when
this dual purpose cable usage is possible.
Be aware, though, that an iDome is internally
wired for either 115 V ac OR 230 V ac — never for
both voltages. (And a third version accepts only 24
V ac input power, but on different pins.)
Assembly/wiring diagrams for the cables are
shown in gure 19 through gure 31.
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. Be-
fore an iDome is bolted in place, the cable from the
junction box or cabinet must be available to attach
to the iDome at its mounting location.
If a 115 V ac iDome is to be operated via its RS-
422 pins on the connector then one of the ve ver-
sions of a type CA-295 cable should be used. These
are shown in gures 24 through 28.
If a 115 V ac iDome is to be operated via its RS-
232 pins on the connector then one of the three ver-
sions of a type CA-296 cable should be used. These
are shown in gures 29 through 31. These cables
are limited to a maximum length of 100 foot due to
the use of RS-232 data communications over them.
Table 2 lists some basic characteristics required
for the conductors in a typical cable.
Table 4 is a pin function list of the iDome connec-
tor. This table shows pin U as the line (hot) input
for 115 or 230 V ac. An iDome is internally wired for
either 115 V ac or 230 V ac. Be sure to know which
operating voltage an iDome requires before apply-
ing power to a unit.
Also, iDomes operating from 24 V ac use pin B as
the “high” input and pin “T” as the low input. Heater
power for a 24 V ac iDome connects to pins “C”
(high) and “K” (low). Heaters draw 65 watts each
time they cycle on in cold weather.
This “high” and “low” designation for 24 V ac does
not have the same relevance as it does for proper,
safe wiring of 115 and 230 V ac wiring. With 24 V
ac the designations serves just as a reference to
which wire is being referred to.
Figure 32 shows pin layout of the iDome connector
and gives the function for each of the pins.
Text continued on page 21
Fig. Cable
Model
iDome
Model
Basic Characteristic Camera Side Conn.
(power/data/video)
System Side Connections
Power Data Video Distance Power Data Video
19 CA-292A 3924 24 Vac RS-232 ntsc 80 feet single 18-pin MS style prepped prepped prepped
20 CA-292B 3924 24 Vac RS-232 ntsc 80 feet single 18-pin MS style prepped D9 F BNC
21 CA-293A 3924 24 Vac RS-422 ntsc 80 feet single 18-pin MS style prepped prepped prepped
22 CA-293B 3924 24 Vac RS-422 ntsc 80 feet single 18-pin MS style prepped 432/232 converter BNC
23 CA-293M 3924 24 V ac RS-422 ntsc 80 feed single 18-pin MS style prepped RJ-45 BNC
24 CA-295E 3925 115 Vac RS-422 ntsc 750 feet single 18-pin MS style prepped prepped prepped
25 CA-295F 3925 115 Vac RS-422 ntsc 750 feet single 18-pin MS style plug prepped BNC
26 CA-295G 3925 115 Vac RS-422 ntsc 750 feet single 18-pin MS style plug 422/232 converter BNC
27 CA-295H 3925 115 Vac RS-422 ntsc 750 feet single 18-pin MS style single AMP connector (for use with iControl)
28 CA-295M 3925 115 Vac RS-422 ntsc 750 feet single 18-pin MS style plug RJ-45 (Mavix) BNC
29 CA-296A 3925 115 Vac RS-232 ntsc 100 feet single 18-pin MS style prepped prepped prepped
30 CA-296B 3925 115 Vac RS-232 ntsc 100 feet single 18-pin MS style plug prepped BNC
31 CA-296C 3925 115)) Vac RS-232 ntsc 100 feet single 18-pin MS style plug D9 F BNC
Note: The following cables can also be used with 230 V ac (PAL) cameras: CA295 E, F, G, M and CA296 A, B, C — but any 115 V ac power plug will have to be replaced with a 230 volt plug.

6X-1026E 19
INSTALLATION AND OPERATION 3920 iDOME
Figure 19. Cable CA292A 24 V ac NTSC (RS-232) All Prepped Wiring Diagram
Figure 20. Cable CA292B 24 V ac NTSC (RS-232) Prepped/D9/BNC Wiring Diagram
CA292A
CA292B

6X-1026E
20
INSTALLATION AND OPERATION
3920 iDOME
Figure 21. Cable CA293A 24 V ac NTSC (RS-422)All Prepped Wiring Diagram
Figure 22. Cable CA293B 24 V ac NTSC (RS-422) Prepped/422-232/BNC Wiring Diagram
CA293A
CA293B