COHU 6110 User manual

Phone: [phone]
www.cohu-cameras.com
Cohu Electronics • 3912 Calle Fortunada • San Diego, CA 92123-1827
Fax: [phone]
inf[email protected]
6110 SERIES
Megapixel IEEE-1394a Camera
INSTALLATION AND OPERATION MANUAL
Technical Manual 6X-1051 April 14, 2005
Figure 1. Monochrome Progressive Scan Camera
Preliminary 3a 4-14-05
Lens Optional

26X-1050
6110 CAMERA INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
LIST OF SECTIONS LIST OF FIGURES
LIST OF TABLES
SECTION TITLE PAGE
1.0 GENERAL DESCRIPTION 3
1.1 Electrical Characteristics 3
1.2 Mechanical Characteristics 4
2.0 INSTALLATION 5
2.1 Equipment Supplied 7
2.2 Equipment Required but Not Supplied 7
2.3 Cabling Requirements 7
2.4 Power Requirements 8
2.5 Mounting Requirements 8
2.6 Installation Procedure 10
3.0 Operation 14
3.1 Control Inputs & Outputs 14
3.2 Software Control 14
3.3 Frame Rates 14
3.4 Menu Items 14
3.5 "Camera" Drop-down Menu Items 14
3.6 "Mode" Menu Drop-down Items 19
3.7 "Rate" Drop-down Menu Items 19
3.8 "Cohu" Drop-down Menu Items 19
3.9 "Help" Drop-down Menu Items 19
3.10 Pop-up Viewer Windows 19
4.0 Handling Instructions 21
4.1 Unpacking & Receiving Instructions 21
4.2 Static Discharge Protections 22
4.3 Preparation for Shipment & Storage 24
FIG. TITLE PAGE
1 Monochrome Progressive Scan Camera 1
2 Sensor Optical Black Areas 3
3 Sensor SensitivityCharacteristic 3
4 Model Number Interpretation Diagram 5
5 Dimensions, Model 6112 6
6 Typical Installation Interconnections 8
7 Auxiliary Input (RJ-45) Cable Diagram 9
8 Trigger Input Functional Diagram 11
9 Strobe Output Functional Diagram 11
10 Strobe Timing Reference 13
11 Strobe Output Field Reference 15
12 "Camera" Window (with typical selections) 18
13 "Camera" Drop-down Menu (Camera Stopped) 18
14 "Camera" Drop-down Menu with Select
Camera" Selected 20
15 "Camera" Drop-down Menu after "Init Camera"
Selected 20
16 "Camera Control" Window 20
17 "Check Link" Verify Window 22
18 "Maximum Speed" Window 22
19 "Problem Acquiring Image" Window 22
20 "Partial Scan Setup " Window 23
21 "Camera Identification" Window 23
22 "Strobe Setup" Windows 23
23 "Debug" Window 24
24 "Set Serial Number" Window 24
TABLE TITLE PAGE
1Specifications 4
2 Key Points to Remember 7
3 Items Supplied 10
4 Items Required but Not Supplied 10
5CablesRequired 11
6 Drop-down Menu Items 12
7 "Camera" Drop-down Menu Items 17

3
6X-1050
6110 CAMERA
INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
1.0 GENERAL DESCRIPTION
This introduction briefly describes the overall
characteristics of the Model 6112 Camera
(figure 1) related to its installation and operation.
1.1 Electrical Characteristics
A model number interpretation diagram
appears in figure 4. That diagram shows the
various basic configurations of the Camera. Table
1 lists the specifications.
1.1.1 Sensor Characteristics
The sensor is a 1/2-inch (8 mm) 4:3 aspect
ratio package. It is a monochrome CCD interline
transfer progressive scan sensor. The glass
faceplate is 0.75 mm thick with a reflective index
of 1.5. There are 1360 horizontal and 1024
vertical active pixels. Pixels are square: 4.65 µm
x 4.64 µm.
Figure 2 shows the optical black pixels
surrounding the active area. Figure 3 graphs the
spectral sensitivity of the sensor. Note that this
is the sensitivity curve of the sensor itself — not
including any lens or light source.
The Camera obtains enhanced sensitive and
low dark current through use of a Hole Accumu-
lation Diode (HAD) sensor.
The sensor offers an electronic shutter with
variable charge store time so that a full frame
image can be obtained without a mechanical
shutter.
1.1.2 IEEE-1394a Connector (6-pin)
This connector is the six pin version of a
1394a connector. Two pins are used to carry
power to the camera. The camera derives operat-
ing power for video and processing control from
this connector. (Strobe circuits obtain dedicated
power from the RJ-45 connector.)
1.1.3 RJ-45 10 Wire Connector
Only seven of the 10 pins on this connector
are used: two for the trigger input to capture
scenes, four to strobe external scene lighting
circuits, and one to provide Vcc input for these
strobe circuits. These are opto-isolate circuit
functions. Power for these circuits is provided
V
H
2 Pixels
40
2
8
Pin 1
Pin 11
OPTICAL BLACK POSITION
(Top View)
400 500 600 700 800 900 1000
Wavelength (nm)
0
0.2
0.4
0.6
0.8
1
Relative Response
Sensor Sensitivity Characteristics
(excludes lens characteristics and light source characteristics)
Figure 2. Sensor Optical Black Areas
Figure 3. Sensor Sensitivity Characteristic
from outside the camera to maintain complete
isolation from the other camera circuits.
1.2 Mechanical Characteristics
The 6110 has optical and mechanical inter-
faces identical to the Cohu model 2600 camera.
It can be mechanically substituted in place of a
2600 camera.
Dimensions are shown in figure 5. Note that
these dimensions do not include the adjustable
CS-mount. Also note that the base of the Camera
is dimensioned both with and without the mount-
ing block. It can be removed if desired.
The CS-mount lens adapter threads into the
front of the housing. Adding the 5-mm extension

46X-1050
6110 CAMERA INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
ring (provided) allows C-mount lenses to be used
with the Camera.
Two connectors are located at the rear
panel. One is an IEEE-1394a six-pin connector
that carries video/control input power and the
other is an RJ-45 10-pin connector to support the
auxiliary functions of triggering and strobing. The
RJ-45 has power input on pin 7 to drive the
strobe stages. Triggering is directly driven by the
externally applied trigger signal.
The camera can be mounted in four ways:
1. By the lens
2. To the top of the case
3. Directly to the bottom of the case, and
4. To a removable mounting block on the bottom of
the case.
The top of the case has a single 1/4-20 hole
for mounting purposes.
The bottom of the case has a pair of
threaded 6-32 x 0.086-inch deep holes for direct
mounting or these mounting points can be used
ELECTRICAL
Sensor 1/2-inch format 4.65 micron x 4.65 micron
Active Pixels 1360 (H) x 1024 (V)
Resolution 1024 x 1024 tv lines
Sensitivity 3 lux, faceplate for full video, min gain, 1/30 sec exposure
Frame Rate 4 f/s at full resolution; 15 f/s at 256 lines/frame
Scanning 1280 (H) x 960 (V); Fewer than 960 lines can be selected
Trigger Input Optoisolated input for scene captureon RJ-45 auxiliary connector
Shutter Programmable 1/15 to 1/20,000 sec; up to 5 sec integration
Gain 0 to 30 dB manually programmable
S/N 60 dB
Gamma 1.0 fixed
ImageProcessing Mirror imaging and ROI
VideoOutput IEEE-1394A IIDC [D-cams] compliant [16 bit format]
Sync Internal; optional opto-isolated hardware trigger or software trigger
Control Outputs 4 optoisolated strobing outputs
Controls Gain, shutter, offset, frame rate, ROI window via D-cam registers
Power, video and control 12 V dc (8 to 30 V dc IEEE-1394a compatible less than 3 watts
Power, auxiliary input Vcc required for opto-isolated strobe outputs
MECHANICAL
Dimensions 1.53 high x 2.13 wide x 3.74 long in inches (39 x 54 x 95 mm)
Weight 1.0 lb (454 grams)
Connectors (2) IEEE1394a (6 wire) video/control/power;
RJ45 (10 wire) Optoisolated trigger input; 4 discretes optoisolated outputs
ENVIRONMENTAL
Temperature -5 to 60 °C (23 to 140 °F) operating; -20 to 70 °C (-4 to 158 °F) storage
Humidity <95 %, non-condensing
Shock 80 g (IEC 68)
Vibration (less lens) 8 g (IEC 68)
Table 1. Specifications

5
6X-1050
6110 CAMERA
INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
Figure 4. Model Number Interpretation Diagram
Series Power
Monochrome
2k Camera
1 1/2-inch format
monochrome
Accessories
Not
Assigned
Lens
Option
Camera
Output
Manual iris
CS- or C-mount
Sensor
1 IEEE-1394a
0 None
2 12 V dc over
IEEE-1394a
611 2 — 1 00 0 xxxx
to attach the removable mounting block which
then provides two 1/4-20 mounting holes.
1.2.1 CS-mount or C-mount Lens
Use a manual-iris lens compatible with the
1/2-inch sensor in the camera. Either a CS-mount
lens or a C-mount lens can be used. Use of a C-
mount lens will require that the 5-mm extender
supplied with the Camera be threaded onto the
C-mount lens before it is then threaded onto the
CS-mount adapter.
2.0 INSTALLATION
This section covers the general require-
ments of installing the camera including cabling
and power requirements. In addition to the actual
installation requirements, this section covers a
number of other items including static discharge
protection and proper shipping and handling of
the Camera. Refer to table 2 for a summary of
key points to remember about installing and
using the Camera.
Section 4 of this manual covers Receiving
Inspection, Static Precautions, and Return Ship-
ment to the Factory.
2.1 Equipment Supplied
Table 3 lists the equipment supplied with the
basic camera model number. Other items may
be supplied if they wereordered with the camera.
2.2 Equipment Required but Not Supplied
Table 4 is a list of equipment required to
make the camera operational in a minimum
configuration. Other items may be required
depending on the application.
2.3 Cabling Requirements
The rear panel provides two connectors for
interconnections with other equipment.
As a minimum, the IEEE-1394a connector
must be used. It provides several functions
including operating power to the camera, picture
data out to the viewing PC, and control functions
for the camera.
The RJ-45 connector offers two auxiliary
functions that may not be required. This is an
opto-isolated port and thus requires its own
supply power on pin 7. It has a trigger input to
capture a scene image and four programmable
strobe outputs to “fire” strobe lights during the
integration period of the sensor.
2.3.1 IEEE-1394a Cable
Installation cables for IEEE-1394a are best
obtained from a reliable cable manufacturer and
not built on-site. Use only a cable of the highest
quality. All six wires are required since the cam-
era draws its operating power from this cable.

66X-1050
6110 CAMERA INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
Figure 5. Dimensions, Model 6112

7
6X-1050
6110 CAMERA
INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
Table 2. Key Points to Remember
ITEM KEY POINTS
STROBE OUTPUTS
1 Using the strobe outputs requires a cable with an RJ-45 connector
2 Using the strobe outputs requires that power be supplied to the RJ-45 connector
3 Strobe outputs must be current limited to protect the internal emitter follower drive transistor
4 Strobe outputs are optoisolated from other camera circuits
5 Start & stop times on the strobe setup window must be within the frame time being used
6Shuttering impacts the strobe times that can be set. When the sensor is being shuttered, the integration
interval during which time the scene is obtained occurs during the last part of the vertical interval
TRIGGER INPUT
7Externaltriggering for scene capture can be implemented either through the software interface or by
ahardwire connection on the RJ-45 connector
8 Hardwire triggering does not use the Vcc power input on the RJ-45 rear panel connector
POWER INPUTS
9 Power for camera video and control circuits is supplied via the 1394a cable (a 6-wire cable)
10 When strobe outputs are to be used, power must also be supplied to the RJ-45 auxiliary connector
OP E RATING C ONS ID E R ATIONS
11 Selecting some of the control functions requires stopping the camera (stop is equivalent to pause)
12 At full resolution, maximum frame rate is 4 frames per second
13 For setup and adjustment purposes, select the Draft mode for 12 frames per second operation
14 A tif or bmp image of the scene can be saved to an external hard drive or other device
For test bench cables, though, it is possible
to buy RJ-45 10-pin cable connectors and use a
punch-down tool to install the required wires onto
the connector.
2.3.2 RJ-45 Auxiliary Cable
Only seven of the 10 pins of this connector
are used. One pin is input power for the strobe
outputs, four are strobe output lines, and two
provide trigger input for scene capture. Depend-
ing on the length of this cable run and the noise
environment of the installation it may not require
overall shielding or shielding of the trigger lines.
Figure 7 is the wiring diagram for a cable show-
ing overall shielding for longer runs.
2.4 Power Requirements
Operating power for the camera must be
supplied via the 1394a cable. Power for the
strobe outputs must be supplied to the RJ-45
connector if they are to be used.
2.4.1 Power Over 1394a
The IEEE-1394a specification provides for
devices to obtain operating power over a 1394a
cable (6-wire type). The 6100 makes use of this
feature so the device it is connected to must
provide this power. Powered 1394a sources
must be capable of supplying any voltage from 8
to 30 V dc.
The Camera requires 12 V dc from the
1394a cable at less than 3 watts
If the Camera is to be operated with Viewer
software running on a laptop computer it is likely
that this computer will have a 4-pin (non-pow-
ered) 1394a connector. In this case an external
power supply adaptor will be required to intercon-
nect between the 4-pin 1394a connector on the
laptop and a 6-pin 1394a cable (powered type) —
which then provides this adapter voltage to the
Camera. These adapters are spcifically made for
1394a applications.
2.4.2 Strobe Power via RJ-45
If power is required to the RJ-45 auxiliary
connector, it is applied to pin 7. This power is

86X-1050
6110 CAMERA INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
labeled +Vcc on the illustrations because the
actual voltage applied depends on the circuit
externally connected to the strobe outputs. A
typical input range would be from 3.3 V dc to 15 V
dc. The strobed outputs are common collector
(emitter follower) circuits. Each output is specified
to provide a maximum of 35 mA in continuous
operation. An external 100 ohm series resistor is
shown in figure 9 to protect the internal drive
transistor from an accidental short to ground. This
assumes a 5 V dc input for Vcc on pin 7.
2.5 Mounting Requirements
The dimensions shown in figure 5 related to
mounting the Camera. The Camera can be
mounted in four different mounting configurations:
1. By the lens (being careful to ensure that the
attached cables do not provide excessive pressure
on the camera)
2. By the single 1/4-20 threaded hole on the top of
the case
3. By the two 6-32-0.086 threaded holes on the
bottom of the case
4. By two 1/4-20 threaded holes on a mounting
adapter that can be installed on the bottom of
the case. The Camera is typically shipped with
this mounting block installed.
The following paragraphs describe some of
the features of the Camera related to the instal-
lation process.
2.6 Installation Procedure
Prior to installing the camera it may be
necessary to prepare an auxiliary interface if
the triggering and strobe lines on the RJ-45
connector are to be used. See figures 6 and 7.
The camera can only be operated by
Viewer software running on a PC interfaced via
a IEEE-1394a cable.
Installing the Camera is straightforward. It
is only necessary to mount the Camera to a
suitable base, install the lens, attach the
cable(s), apply power, and operate it using the
Viewer software.
Figure 6. Typical Installation Interconnections
6110
Camera
PC
Auxiliary Interface
Trigger (scene capture)
PC MONITOR
1394a Port
6-wire 1394a Cable
Power Out
with
Local
Site
Interface
Monitor
Cable
7-wire Cable
NOTE:
PC must be running appropriate software
to interface with camera. This can include the
Cohu 6110 GUI interface, third-party software
such as National Instruments Lab View, or software
written or modified for the specific application.
Trigger drives the cathode/anode of an optoisolator diode
in the camera
+
-
Illumination
Outputs
(strobed)
Scene
Illumination
IEEE-1394a
AUX RJ-45
Strobed Inputs
+Vcc Out
(emitter follower
DRIVERS
Note: External emitter
resistors required
driven)

9
6X-1050
6110 CAMERA
INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
1
2
3
4
5
6
7
8
9
10
8
9
10
"11"
"12"
1
2
3
4
5
6
7
8
9
10
"11"
"12"
Tab 1
Tab 2
no connection
Trigger into 390 Ohms
5 mA min
(6.3 to 10 mA prefered)
Strobe Outputs
from Camera
Load Resistor Required
CAMERA 10-PIN
RJ-45
CONNECTORS
Strobe outputs are emitter followers that must have an external resistor to limit current and develop signal
Triggering causes the camera to capture an image and provide it as output on the IEEE-1394a cable
Strobe and triggering are optoisolated from other Camera circuits
Strobe circuits receive Vcc power from the external strobe-power source
RJ-45 Tabs ("11" & "12") are common/ground connections making a mechanical connection
with the cable shield on sides of plug and circuit board mounted receptacle
Be aware that Ethernet cables cannot be used. Ethernet uses 8 pin connectors of the
RJ-45 series.
Opto-isolated Board
Ground
Notes:
+
-
Emitter Followers
Strobe 1 Out
Strobe 2 Out
Strobe 3 Out
Strobe 4 Out
Strobe 1
Strobe 2
Strobe 3
Strobe 4
Trigger (anode)
Vcc +
Trigger (cathode)
Strobe Power
To Camera
(Vcc +)
Trigger Input
(scene capture)
Vcc Input
(for strobe outputs)
Figure 7. Auxiliary Input (10-pin RJ-45) Cable Diagram

10 6X-1050
6110 CAMERA INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
Table 3. Items Supplied
ITEMS TYPICALLY REQUIRED BUT NOT SUPPLIED
ITEM Description Characteristics
1Lens, CS-mount or C-mount
(manual iris only) For 1/2-inch sensor
2Cable, IEEE-1394
(must supplypower) 6-wire version to supply powe
r
3 Cable, Auxiliary (optional)
Auxiliary cable for using the
triggering and strobe functions
if desired. Mates with RJ-45
connector on rear panel
4Power source for strobe functions (Vcc). Noiminal 5 V
dc at apporoximately 25 mA.
Via pin 7 of RJ-45 connector.
Return line(s) are the strobe
outputs. (Open collector)
5VideomonitorCompatible with PC video
output
6 PC, laptop or other 6-wire (powered) IEEE-1394a
7Alternate Camera Control
Software
National Instruments Lab View
,
or custom software written /
modified for the 6100
Table 4. Item Typically Required
But Not Supplied
Table 5 lists the two cables that interconnect
with the Camera rear panel. The RJ-45 cable is
required only if external triggering or strobe
outputs are to be used.
The following is a general description of the
typical installation procedure for a camera.
1. Prepare the auxiliary interface and cable for the
RJ-45 connector if this is required. Use of the
strobe functions requires that power be supplied to
the opto-isolator stages in the camera dedicated to
the strobe circuits. (The trigger input directly drives
the cathode and anode of a photodiode in the
Camera and does not use the Vcc input of the
strobe circuits.)
2. Prepare the PC by verifying that it has an IEEE-
1394a port with power output and also the appro-
priate software to communicate with the camera
3. Install a CS- or C-mount lens on the camera
suitable for use with a 1/2-inch sensor. It may have
to be mechanically back focused once the camera
is operational. Back focus will have been factory
set using the lens that the Camera was ordered
with, but if the Camera was not ordered with a
lens then a typical lens would have been used. A
field supplied lens may have a slightly different
characteristic and thus require back-focusing of
the lens mount adapter. This procedure is de-
scribed in section 2.8.3.
4. Mount the camera
5. Connect the 1394a and if required the auxiliary
cable
6. Obtain a picture from the camera. This requires
use of the Viewer GUI software operating on a PC.
See section 3.0 for Operating instructions.
7. Adjust mechanical back focus by rotating the
lens and C-mount if required. See section 2.8.3.
8. Make any other adjustments to focusing and
mechanical alignment if required.
9. Perform an operational test of the camera
functions. Sections 2.8.1 through 2.8.4 provide
additional installation instructions about the rear
panel connectors, the back focus adjustment for
the lens, and other features.
ITEMS SUPPLIED
Item Description Cohu Part
Number
Kit 8366-7 Supplied Items
1 CS-mount 8359208-001
2Set Screw, stainless steel, hex
head, nylon tipped, 4-40-5/32 2010258-005
3Hex/Allen Wrench, L-style,
0.050-inch across flats 9710010-009
45-mm Extender
(CS to C-mount adapter) 2010695-001
Also Included with Camera (not part of kit 8366-7)
5Mounting Block
(mounts to bottom of Camera) 8369405-003
6 Screws (2), Flat Head, 6-32 x 3/8 0310010-027
7 Camera Control Software on CD Cohu 6100
Viewer
Note: Items 3 & 4 typically supplied loose. Items 5 & 6 ypically part of camera body
when shipped. Item 7, the CD, is supplied loose.

11
6X-1050
6110 CAMERA
INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
2.6.1 IEEE-1394a 6-pin Connector
Plug the 1394a cable into the rear panel
1394a connector. Be sure the plug is properly
oriented. Attempting to force it in improperly
oriented could possibly apply voltage to the data
and trigger lines and damage them.
2.6.2 RJ-45 10-pin Connector
If either the scene capture triggering input or
the strobe functions are to be used for illuminat-
ing the scene, plug in the auxiliary cable connec-
tor to the 10-pin RJ-45 type connector
This connector has grounding tabs on each
side. Thus, the mating cable plug also must
have grounding contacts on the sides to which
the cable shield is connected.
Note: This is not an RJ-45 type 8-pin
Ethernet connector. Ethernet cables will not
work.
2.6.2.1 Trigger Input
The trigger input (figure 8) is used to capture
a scene at a chosen moment in time using an
external hardwire connection. (The trigger func-
tion can also be implemented with the Viewer
software.) This input is independent of the strobe
outputs and their Vcc power input.
Triggering is optoisolated from other camera
circuits. Pin 5 of the RJ-45 auxiliary connector
connects through a 390 ohm resistor to the
anode of a photodiode inside the camera. Pin 6
connects to the cathode of that diode. A minimum
of 5 mA is recommended to drive this photodiode,
but for long term reliability it is better to use a
minimum of 6.3 to 10 mA. Applying a TTL level 5
volts to the input would produce about 13 mA
drive current.
2.6.2.2 Strobe Outputs and Vcc Input
Using the strobe outputs requires that they
be provided with their own input power (Vcc) on
pin 7 of the RJ-45 auxiliary connector. These four
outputs are isolated from other Camera circuits
5
6
CAMERA
REAR PANEL
CONNECTOR
+
-
Trigger
Input
RJ-45
TRIGGER INPUT
FUNCTIONAL CIRCUIT
Opto Isolator Board
390
Note:Trigger can also
be implemented
in software
Camera
Scene
Capture
5 mA min
Figure 8. Trigger Input Functional Diagram
1
2
3
4
7
Typical for Strobe Outputs
(4)
CAMERA
Rear Panel
RJ-45
Connector
Opto-isolator
Board
Vcc
Strobe 1
390 ohm
Vcc
(5 V typical)
+
2
3
4
10
mA
560
100
ohm
Current Limiter
to protect
emitter follower
CAUTION: Shorting a strobe output to ground with Vcc
applied will destroy the internal emitter follower transistor
Figure 9. Strobe Output Functional Diagram
DESCRIPTION CAMERA
CONNECTOR
MATING
CABLE PLUG
IEEE-1394a 6-pin IEEE-1394A 6-pin IEEE-1394a
Auxiliary 10-pin RJ-45 with
side ground tabs
10-pin RJ-45 plug with
side ground tabs
connected to cable shield
Note: This table lists only cables connecting directly to the Camera.
Other cables will be required for interconnections with other
equipment . See figure 6 for a typical installation.
Table 5. Cables Required

12 6X-1050
6110 CAMERA INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
by a four stage optoisolated IC inside the Cam-
era, and thus the strobe outputs require their own
power from an external source to maintain this
isolation.
Each of these four outputs is direcly driven
by an emitter follower transistor inside the cam-
era (figure 9) without any current limiting resistor.
An external current limiting emitter resistor must
be provided outside the camera for each of these
outputs or the internal transistors will be dam-
aged.
Figure 9 shows a typical circuit using a 100
ohm current limiter into a 390 ohm load resistor.
With 5 V dc applied for Vcc the approximate
current through the internal emitter follower and
external resistors would be 10 mA (1/4 W).
Continuous current drain from a strobe
output should be limited to a maximum of 35 mA
in an installed operation when the Camera is in
service.
So long as the load driven by a strobe output
does not short to ground, otherwise exceed the
maximum currrent limtation, or backfeed any
damaging voltage spikes the suggested load
circuit shown in figure 9 can be modified as
desired.
2.6.3 Lens Back Focus
Once the camera is powered up and a
picture has been obtained, the lens may have to
be back focused before the Camera can be used.
The lens must be fully threaded into the CS-
mount (or for a C-mount lens into the 5-mm
extender and then into the CS-mount). During
any adjustments the lens and CS mount must be
turned as unit at all times. The back focus adjust-
ment is performed by rotating the whole
assemlby as a unit in and out of the housing of
the camera. Back focus should only be changed
after it has been determined that it is required.
Proceed as follows for a step-by-step procedure
to back focus the lens:
1 Verify that the setscrew is backed out suffi-
ciently for the CS-mount to be threaded in and out
of the Camera housing.
4.. Set the mechanical focus ring on the lens to
infinity focusing
5. Turn on the camera
6. Obtain a picture on the monitor on a test
Camera Mode Rate Cohu Help
Check Link
Select Camera
Init Camera
Camera Model
Maximum Speed
Show Camera
Stop Camera
Mirror
Camera Control
Strobe Setup
One Shot
Test Pattern
Save Image
External Image
Positive Edge
Negative Edge
Both Edges
Exit
1280x960 Mono (16-bit)
Partial Scan
Draft Mode
7.5 pfs
Camera Reset
Set Serial Number
About 1394Cohu Demo...
Debug Setting
The
Mode and Rate columns above show only the items
applicable to the model 6100 Camera. Grayed-out items that
appear in the actual drop down menus are not listed here.
In the
Camera column, certain items in the actual drop down
menu will be grayed out depending on the selections currently
in effect
NOTES
Table 6. Drop-down Menu Selections

13
6X-1050
6110 CAMERA
INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
Figure10. Strobe Timing Reference
B. WITH SHUTTERING
A. NO SHUTTERING
Full Exposure Period Without Shuttering
Exposure Period
Selected for
Shuttering
(25 ms)
(250 ms for 4 fps)
4 Frames Per Second Assumed
EXPOSURE TIME
WHEN SHUTTERING
EXPOSURE
TIME
(4 frames per second)
Sensor is constantly cleared
for 225 ms by the string of
pulses until only the selected
shuttering period remains
of the normal integration
period of the sensor
Strobe timings must be set
to illuminate the scene during
this interval when clearing
pulses have ended
When clearing pulses end here,
sensor is then allowed to integrate
an image for the remainder of the
exposure period (25 ms) without being
constantly cleared.
(A Shuttering Period
of 25 ms is shown)
Strobing must occur during this
25 ms period in the example
25 MS STROBE TIMES SHOWN AT END OF10 INTERVALS
25 ms
Full Exposure Period
EXPOSURE
TIME
Strobe timings must be set
to illuminate the scene during
this interval.
250 MS STROBE TIMES SHOWN DURING 10 INTERVALS WITHOUT SHUTTERING
250 ms

14 6X-1050
6110 CAMERA INSTALLATION AND OPERATION
Preliminary 3a 4-14-05
pattern or scene with fine details sufficiently far
away that it is into the infinity focusing distance of
the lens
7. Rotate the CS-mount adapter and lens as a
unit in and out of the Camera to obtain the best
possible focus
8. Snug down the setscrew. Do not overtighten. It
is nylon tipped.
9. Continue with any other required performance
tests
2.6.4 Strobe Timing Reference
The strobe outputs must have their timings
set (figure 22) to produce scene illumination
during the time when the sensor is integrating an
image. Timing illustration A in figure 10 shows
that the full sensor integration period is available
when the Camera (sensor) does not have a
shutter period selected.
Illustration B in figure 10, however, shows
that when the Camera is set for a typical shutter
period of about one-half the normal period, the
initial period of sensor integration is constantly
being cleared by a string of pulses. The sensor is
only allowed to integrate an image of the scene
after these clearing pulses end. The remaining
time would be the shutter period selected. It is
during this period that the strobe outputs can be
set to “fire” strobe lights on the scene.
The important thing to note is that the shut-
tering time selected occurs at the end of the
normal integration period of the sensor — not
during the initial period when the sensor is con-
stantly being cleared. The clearing stops at the
time in the when the shuttering time selected
remains in the vertical interval.
If the Camera (sensor) has been set for a
very short shuttering period, only a very slight
integration time at the end of normal integration
is available.
3.0 OPERATION
Operating the camera consists primarily of
making menu selections and settings. The follow-
ing paragraphs briefly describe the function of
each selection.Figure 19 shows a window that
opens if the Camera has problems acquiring an
image.
3.1 Control Inputs and Outputs
All operating functions of the Camera occur
through two electrical connectors are located on
the rear panel. One is a six-pin IEEE-1394a
interface and the other is an RJ-45 connector
used for two functions that may not be used:
triggering the Camera to capture a scene and
strobing lightin to illuminate the scene.
3.2 Software Control
Viewer software must be used to control
most camera functions. The Cohu 6100 GUI
Viewer can be used for basic control functions or
a third-parts software such as National Instru-
ments Lab View can be used. For some applica-
tions it may be preferable to have software
written or modified for the specific application to
which the camera is to be used.
3.3 Frame Rates
The basic full-resolution (1280 [H] x 960 [V])
frame rate of the camera is about four frames per
second (fps). This is a period of about 250 ms.
Increased frame rates are available by
selecting the Partial Scan mode to scan fewer
lines. As few as two lines can be scanned.
3.4 Menu Items
Section 3.5 lists each item that appears in
the five drop down menus and briefly describes
their functions. The descriptions covered in this
section are shown in table 6.
Some of the menu selections require that
Camera operation be halted by the Stop Cam-
era function in the Camera menu.
3.5 “Camera” Drop-down Menu Items
This section briefly describe the various
drop-down menu selections available under
Camera. See the Camera column in table 6 for a
summary of these selections. Table 7 expands on
functions of the Camera drop down menu selec-
tions. They are also described in sections 3.5.1
through 3.5.10.

15
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Preliminary 3a 4-14-05
Figure 11. Strobe Output Field Reference`
Selected Start of Strobe Period Stop is Set to End Strobe Period
Here
Forcible End of Strobe Period
if Stop is Set Beyond Here
Sensor
Vertical
Integration
Interval
Strobe Start-time
Strobe Reference Edge
Note: Start and Stop are set in the viewer software strobe Setup Window
This window is accessible from the Camera Drop-down menu.
Start and Stop of Strobe
can be anytime during the
vertical interval if there
is no shuttering
(Example Start & Stop Times)
If shuttering has been established
the sensor will be prevented from
integrating an image during this
initial part of the vertical interval.
Start and Stop must be set
within this interval if strobing
is desired with the shuttering
example shown
B. Available Strobing Interval when the Camera is Being Shuttered
A. Available Strobing Interval Without Shuttering
Typical
(See Figure 22)
It will be allowed to integrate
an image only during this period
(the shuttering period selected)

16 6X-1050
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Preliminary 3a 4-14-05
3.5.1 Check Link
This selection (figure 17) causes the Viewer
software display all available cameras on the
1394a cable.
3.5 2 Select Camera
Placing the menu cursor over this item
causes a flyout window (figure 14) to appear
showing all the available cameras on the 1394
cable. Click on the desired camera.
3.5.3 Init Camera
Clicking on this item causes the viewer to
connect with the camera to determine its various
operating characteristics (figure 15).
3.5 4 Camera Model
Clicking on this item causes a window to
appear (figure 21) showing the vendor associated
with the selected camera, the model number of
this camera, and the unique identification number
of this camera.
3.5.5 Maximum Speed
Clicking on this item opens a new window
(figure 18) that shows the IEEE-1394 data rate.
3.5 6 Show Camera
Clicking on this item starts camera opera-
tion. If the image generated on the picture moni-
tor is totally black or totally white, it may be
necessary to change settings in the Camera
Control. . . menu item. (Shuttering, Gain, and
Brightness may not be properly set for the light
level on a scene).
3.5.7 Stop Camera
Stop camera puts it into a “pause” mode and
ends output of an image. The Camera must be
stopped to activate certain other menu selec-
tions. Figure 13 shows the menu after Stop has
been selected. Note that Stop is grayed out and
Show Camera is active.
3.5.8 Mirror
Mirror causes the image being generated to
switch left and right sides. Top-bottom stays the
same.
3.5.9 Camera Control . . .
Opens up a new window (figure 16) with
slider bars to control Shuttering, Gain, and
Brightness. These values can also be changed
by using the right and left arrow keys and the
keyboard. A shuttering rate cannot be set that is
longer than the frame rate currently established.
Nominal values: Gain to 215; Brightness to
150; shuttering to 1/30 sec (33 ms shutter pe-
riod).
3.5.10 Strobe Setup
Four outputs on the rear panel RJ-45 con-
nector can be used to strobe drive external
circuits that operate strobe lights. These outputs
could be used to strobe other functions in ma-
chine vision applications, too. Clicking on this
menu item opens a new window (figure 22)
containing four sliding bars to set the start and
stop point for each output. The related box must
be checked to activate the output. The strobe
should not be set for a timing that is not consis-
tent with the existing frame rate or for when a
shuttering selection has reduced the initial part of
the integration period of the sensor. See section
2.8.4 for shuttering details.
3.5.11 One Shot
When the camera is stopped, this menu item
can be clicked to cause the camera to capture a
single image and provide it as output.
3.5.12 Test Pattern
When the camera is stopped, this menu item
can be selected to turn-on a gray scale test
pattern output.
3.5.13 Save Image
Selecting this item prompts for a storage
location and image file type (bmp or tif).
3.5.14 External Trigger
The camera can be externally triggered
either by a rear-panel hard wire input on the RJ-
45 connector or by a software input from the
Viewer. This causes the camera to obtain an
image at a desired moment in time and provide
that image as an output.

17
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Preliminary 3a 4-14-05
Table 7. “Camera” Drop-down Menu Items
ITEM NAME FUNCTION
1 Check Link Polls IEEE-1394a for all available cameras
2 Select Camera Opens a window to select the desired camera from a list
3 Init Camera Initializes the camera selected in item 2
4 Camera Model Shows model of camera as entered in camera ROM
5 Maximum Speed Shows IEEE-1394a speed (400 Mbits/sec)
6 Show Camera Activates image capture at the current frame rate
7StopCamera
Deactivates image capture. Activates the One Shot, Test Pattern, Save Image, &
External Trigger
8 Mirror Switches the camera image output left-right
9 Camera Control Opens a new window for control of Brightness, Gain, & Shutter
10 Strobe Setup Opens a new window for control of the 4 strobe outputs (See figure 22)
11 One Shot Stores the current image. Camera must be stopped before use of One Shot
12 Test Pattern Generates a gray scale test pattern output. First select Stop Camera, then Test Pattern, then Start Camera. A gray scale test pattern should then be visible. Stop
Camera must be selected to use this feature
13 Save Image Opens a window prompting for a storage location. Tiff or bmp file format can be
selected. Stop Camera must be selected to use this feature
14 External Trigger
Activates the external trigger input. Stop Camera must be selected to use this
feature. A software trigger = 0 input then requires another input to select whether
a positive or negative edge initiates integration of an image. The integration
period is then determined by the currently selected frame rate.
A trigger = 1 software input initiates integration of an image beginning with a
negative edge. The integration then ends with a subsequent positive edge. (The
width of this negative-going pulse is the integration period.) See text for additiona
l
requirements.
15 Positive Edge Begins obtaining an image upon receipt of a positive-going trigger edge. Ends
with the currently established frame rate.
16 Negative Edge Begins obtaining an image upon receipt of a negative-going trigger edge. Ends
with the currently established frame rate.
17 Both Edges Begins obtaining an image on the negative-going edge and continues until the
positive edge. Outputs the image after the positive edge. Not a D-Cams mode.
18 Exit Shuts down the Viewer GUIsoftware

18 6X-1050
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Preliminary 3a 4-14-05
Figure 12. “Camera” Window (with typical selections)
Figure 13. “Camera” Drop-down Menu
(Camera Stopped)
When this menu item is selected, three
other choices become available: Positive Edge,
negative edge, and Both. (Both is a special
function.)
3.5.15 Positive Edge
Select Positive Edge if the camera is to be
triggered on a positive-going edge of a pulse or
waveform.
3.5.16 Negative Edge
Select negative edge if the camera is to be
triggered on the negative-going edge of a pulse
or waveform.
3.5.17 Both Edges
When the both edge menu item is selected
the triggering input to the camera must have
equal positive and negative times.

19
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Preliminary 3a 4-14-05
3.5.18 Exit
Selecting Exit shuts down the camera and
exits the Viewer.
3.6 Mode Menu Items
The following paragraphs briefly describe
the function of each selection available under the
drop down Mode menu selection.
3.6.1 1280 x 960 Mono (16 Bit)
This is the maximum full-frame mode for the
camera. The grayed-out selections apply to other
cameras. The frame rate at full scan is four
frames per second. An increased frame rate can
be obtained by using the Partial Scan mode.
3.6.2 Partial Scan
Selecting Partial Scan makes it possible to
increase the frame rate of the camera. The
Camera operates at four frames per second
when all 960 scan lines are being used. Selecting
fewer than 960 lines increases the frame rate —
though not in proportion. Partial scan can be as
few as two lines.
The Camera must be stopped before the
Partial Scan Mode can be selected. Clicking on
Menu produces a drop-down list of selections
from which the Partial Scan mode can be se-
lected. This opens a new window: Partial Scan
Setup (figure 20) which has a slider bar to
change the number of lines from 960 to some
other value. Using the right and left computer
keypad arrows will step the number of lines one
at a time. Use the slider to get close, then step
with the right/left keys.
Only complete lines can be scanned. It is not
possible to “narrow down” the scan from 1280.
3.6.3 Draft Mode
Draft mode is a quick way to increase frame
rate temporarily for setup and adjustment pur-
poses. The number of lines is reduced from 980
to 240 — resulting in 12 frames per second.
3.7 Rate Drop Down Menu Items
This is a general purpose viewer. The frame
rates shown in this drop down menu are typical
frame rates for typical machine vision cameras
that may be used with the viewer. No selection
can be made in this menu.
3.7.1 7.5 fps (Frames Per Second)
A default listing that cannot be changed.
This Viewer is based in a generic software meant
to be tailored to cameras of many different capa-
bilities. Thus many of the grayed out selections
do not apply to the 6100 Camera.
3.8 Cohu Drop Down Menu Items
Two selections are available under the Cohu
drop down menu.
3.8.1 Camera Reset (Reset EEPROM)
Caution: Do not click this selection without
understaning the complete procedure required..
Reset should be used only when it is desired
to clear the EEPROM of its currrent settings and
return them to the factory defaults.
After Reset is clicked the Camera power
must be turned off and then back on. It takes at
least 40 seconds for the EEPROM to be
reinitialized after power up. DO NOT TURN THE
CAMERA OFF AGAIN DURING THIS TIME. It
could result in an inoperative Camera.
3.8.2 Set Serial Number
See section 3.10.3 for the ramifications of
changing this number.
This selection is for setting or changing an
identification number for the Camera. It is used
by the operating system device manager and the
Viewer software to identify the Camera.
This is an internal serial number. It is not
the same as the factory manufacturing serial
number assigned to the Camera.
3.9 Help Drop Down Menu Items
The Help drop down menu offers two selec-
tions to click on.
3.9.1 About 1394 Cohu Demo
Provides information about the version level
of the Viewer sofware.

20 6X-1050
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Preliminary 3a 4-14-05
Figure 14. Camera Window with Select
Camera Selected
Figure 15. Camera Window After Init Cam-
era Selected
Figure 16. Camera Control Window
3.9.2 Debug Settings
Opens a new window (figure 23) with two
slider bars. The top bar for DLL Trace Level is
currently implemented. The bottom bar (for Driver
Trace Level) is not functional.
3.10 Pop-up Viewer Windows
A variety of new windows open up in re-
sponse to selections made on the drop down
menus. Each of these windows is describes in
this section.
3.10.1 Camera Control
This window (figure 16) is opened from
within the camera drop down menu. It has three
slider bars:
• brightness
• gain
• shutter.