Prosilica GC1380H, GC1380CH User Manual

prosilica
USER MANUAL
December 23, 2009
Prosilica Inc. www.prosilica.com tel: 604.875.8855 fax: 604.875.8856
© 2009 Prosilica Inc. All rights reserved.
GC1380H User Manual 70-0034A-D
ii
Table of Contents
Table of Contents ............................................................................................................................ ii
Introduction .................................................................................................................................1
Precautions ..................................................................................................................................1
Warranty ......................................................................................................................................1
Specifications ..............................................................................................................................2
Supported Features ......................................................................................................................3
Mechanical ..................................................................................................................................4
Connections .................................................................................................................................5
Cleaning the Sensor .....................................................................................................................9
Adjusting the C-mount ..............................................................................................................10
Camera Installation ....................................................................................................................11
System Optimization .................................................................................................................16
Trouble Shooting ....................................................................... Error! Bookmark not defined.
Addendum ......................................................................................................................................21
GC IO Schematic .......................................................................................................................22
Isolated Trigger Schematic ........................................................................................................23
Non-isolated Trigger Schematic ................................................................................................24
Video Iris Schematic .................................................................................................................25
Trigger Timing Diagram ...........................................................................................................26
Notes on Triggering ...................................................................................................................27
Prosilica Inc.
GC1380H User Manual 70-0034A-D
1
READ INSTALLATION GUIDE CAREFULLY.
DO NOT OPEN THE CAMERA. WARRANTY IS VOID IF CAMERA IS OPENED.
KEEP SHIPPING MATERIAL.
VERIFY ALL EXTERNAL CONNECTIONS.
CLEANING.
DO NOT EXCEED ENVIRONMENTAL SPECIFICATIONS.
Introduction
The GC1380H series of cameras are very sensitive, 30 frames per second, megapixel, Gigabit Ethernet cameras based on the Sony ICX285AL and ICX285AQ CCD sensors.
Precautions
This document contains specific information which is necessary for the correct operation and treatment of this product.
This camera contains sensitive components which can be damaged if handled incorrectly.
Poor packaging of this product can cause damage during shipping.
Verify all external connections in terms of voltage levels, power requirements, voltage polarity, and signal integrity prior to powering this device.
This product can be damaged by some volatile cleaning agents. Avoid cleaning the image sensor unless absolutely necessary. Please see instructions on sensor cleaning in this document.
See environmental specifications limits in the Specifications section of this document.
Warranty
Prosilica provides a 2 year warranty which covers the replacement and repair of all Prosilica parts which are found to be defective in the normal use of this product. Prosilica will not warranty parts which have been damaged through the obvious misuse of this product.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
2
Sensor Type
Sony ICX285AL CCD (ICX285AQ for color)
Sensor Shutter Type
Progressive Interline
Image Resolution
1360 x 1024 pixels
Pixel Size
6.45μm x 6.45μm
Optical Format
2/3 inch
Lens Mount
C-mount with adjustable back focus
Color Sensor Filter Pattern†
Bayer
Full Resolution Frame Rate
30 fps
Frame Rate (640 x 480 ROI)
55 fps
I/O
1 isolated input/output, 1 non-isolated input/output, 1 RS-232 input/output
Power Requirements
Less than 3.5W
††
(5V to 16V)
†††
Digitization
12 Bits
Trigger latency*
2us for non-isolated I/O, 10us for isolated I/O
Trigger Jitter*
±20ns for non-isolated I/O, ±0.5us for isolated I/O
Tpd*
10ns for non-isolated I/O, 1.3us for isolated I/O
Operating Temperature
0 to 50 Celsius***
Operating Humidity
20 to 80% non-condensing
Size
33mm (height) x 46mm (width) x 59mm (length)
Weight
111g
Hardware Interface Standard
IEEE 802.3 1000BASE-T, 100BASE-TX
Software Interface Standard
GigE Vision Standard 1.0
Regulatory
CE, FCC, RoHS
***DUE TO THE SMALL PACKAGING AND HIGH SPEED OF THE GC CAMERAS, SPECIAL
CARE IS REQUIRED TO MAINTAIN A REASONABLE OPERATING TEMPERATURE. IF THE CAMERA IS TO BE OPERATED IN A WARM ENVIRONMENT, IT IS SUGGESTED THAT THE CAMERA BE MOUNTED ON A HEAT SINK SUCH AS A METAL BRACKET AND THAT THERE IS SUFFICIENT AIR FLOW.
Specifications
Applies to GC1380CH only. †† Power consumption will increase with reduced ROI imaging and color interpolation. ††† Nominal operating voltage is 12V. Cameras have been tested at 12V.
* See Notes on Triggering in the Addendum.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
3
Imaging Modes
free-running, external trigger, fixed rate, software trigger
Fixed Rate Control
0.001 fps to maximum frame rate
External Trigger Delay
0 to 60 seconds in 1 microsecond increments
External Trigger Event
rising edge, falling edge, any edge, level high, level low
Exposure Time
10 microseconds to 60 seconds in 1 microsecond increments
Gain
0 to 33dB
Region of Interest (ROI)
independent x and y control with 1 pixel resolution
Horizontal Binning
1 to 8 pixels
Vertical Binning
1 to 14 rows
Pixel Formats
Mono8, Mono16*, Bayer8, Bayer 16, RGB24, YUV411, YUV422, YUV444, BGR24, RGBA24, BGRA24
Sync Out Modes
trigger ready, trigger input, exposing, readout, imaging, strobe, GPO
Supported Features
*On monochrome versions only.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
4
Mechanical
Figure 1. GC SERIES mechanical dimensions.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
5
Connections
Prosilica Inc.
Figure 2. GC SERIES connection diagram.
GC1380H User Manual 70-0034A-D
6
1
2
3
5
7
6
4
8
9
10
11
12
PIN
FUNCTION
1
Power Ground
2
12V Power
3
Sync Input 1 - isolated
4
Sync Output 1 - isolated
5
Isolated Ground
6
Video Iris
7
DNC
8
RS-232 TXD
9
RS-232 RXD
10
Signal Ground
11
Sync Input 2 – non-isolated
Figure 3. General Purpose I/O Pin out. Camera
rear view.
12
Sync Output 2 – non-isolated
DO NOT EXCEED 5.5V ON SIGNAL INPUTS UNLESS OTHERWISE INDICATED. SYNC INPUT 1 CAN BE DRIVEN FROM A HIGHER VOLTAGE IF A CURRENT LIMITING RESISTOR IS USED TO LIMIT THE CURRENT TO LESS THAN 10 MILLIAMPS.
Item 1: GIGABIT ETHERNET PORT
This port conforms to the IEEE 802.3 1000BASE-T standard for Gigabit Ethernet over copper. It is recommended that CAT5E or CAT6 compatible cabling and connectors be used for best performance. Cable lengths up to 100m are supported.
Item 2: General Purpose I/O PORT
The General Purpose I/O port uses a Hirose HR10A-10R-12PB connector on the camera side. The mating cable connector is Hirose HR10A-10P-12S. This connector can be purchased from Prosilica or from http://www.digikey.com.
See Addendum for more detail.
12V Power and Power Ground
To operate the camera 12V Power with suitable current capacity (see specifications) must be provided on Pin 2 and the Power Ground on Pin 1.
A cable assembly providing this power can be ordered from Prosilica (Prosilica P/N 02-8003A for North America or Prosilica P/N 02-8004A for a Universal supply).
Prosilica Inc.
GC1380H User Manual 70-0034A-D
7
Exposing
Corresponds to when camera is integrating light.
Trigger Ready
Indicates when the camera will accept a trigger signal.
Trigger Input
A relay of the trigger input signal used
to “daisy chain” the trigger signal for
multiple cameras.
Readout
Valid when camera is reading out data.
Imaging
Valid when camera is exposing or reading out.
Strobe
Programmable pulse based on one of the above events.
GPO
User programmable binary output.
Sync Input 1 and Sync Input 2
These input signals allow the camera to be synchronized to some external event. The camera can be programmed to trigger on the rising edge, falling edge, both edges or level of this signal. The camera can also be programmed to capture an image at some programmable delay time after the trigger event.
Sync Input 1 is isolated and should be used in noisy environments to prevent false triggering due to ground loop noise. Sync Input 2 is non-isolated and can be used when a faster trigger is required and when environmental noise is not a problem.
Sync Output 1 and Sync Output 2
These signals only function as outputs and can be configured as follows:
Any of the above signals can be set for active high or active low. Sync Output 1 will require a pull up resistor of greater than 1Kohm to the user’s 5V logic supply. Sync Output 1 is isolated and should be used in noisy environments. Sync Output 2 is non-
isolated and can be used when environmental noise is not a problem and when faster response is required.
RS-232 RXD and RS-232 TXD
These signals are RS-232 compatible. These signals allow communication from the host system via the Ethernet port to a peripheral device connected to the camera. Note that these signals are not isolated and therefore careful attention should be used when designing cabling in noisy environments.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
8
LED COLOR
STATUS
Solid Orange
Ethernet link established.
Flashing Orange
Ethernet activity.
LED COLOR
STATUS
Solid Green
Normal operation.
Flashing once per second
Boot up pending
3 quick flashes once per second.
Camera fault.
Isolated Ground
Isolated Ground must be connected to the user’s external circuit ground if Sync Input 1 or Sync
Output 1 is to be used.
Signal Ground
Signal Ground must be connected to the user’s external circuit ground if Sync Input 2 or Sync
Output 2 is to be used or if the RS-232 port is to be used. Note that Signal Ground is common with Power Ground however it is good practice to provide a separate ground connection for power and signaling when designing the cabling.
Video Iris
This signal can be used to drive the video input of a video iris lens. See Addendum.
DNC
These signals are reserved for future use and should be left disconnected.
Item 3: Status LED 1
Item 4: Status LED 2
Prosilica Inc.
GC1380H User Manual 70-0034A-D
9
DO NOT CONTACT CLEAN SENSOR UNLESS ABSOLUTELY NECESSARY.
DO NOT TOUCH ANY OPTICS WITH FINGERS. OIL FROM FINGERS CAN DAMAGE FRAGILE OPTICAL COATINGS.
Cleaning the Sensor
Identifying Debris
Debris on the image sensor or optical components will appear as a darkened area or smudge on the image that does not move as the camera is moved. Do not confuse this with a pixel defect which will appear as a distinct point.
Locating Debris
Before attempting to clean the image sensor, it is important to first determine that the problem is due to debris on the sensor window. To do this you should be viewing a uniform image, such as a piece of paper, with the camera. Debris will appear as a dark spot or dark region that does not move as the camera is moved. To determine that the debris is not on the camera lens, rotate the lens independent of the camera. If the spot moves as the lens moves, then the object is on the lens -not on the image sensor- and therefore cleaning is not required. If the camera has an IR filter, then rotate the IR filter. If the object moves then the particle is on the IR filter not the sensor. If this is the case remove the IR filter carefully using a small flat head screw driver. Clean both sides of the IR filter using the same techniques as explained below for the sensor window.
Cleaning with Air
If it is determined that debris is on the sensor window, then remove the camera lens, and blow the sensor window directly with clean compressed air. If canned air is used, do not shake or tilt the can prior to blowing the sensor. View a live image with the camera after blowing. If the debris is still there, repeat this process. Repeat the process a number of times with increased intensity until it is determined that the particulate cannot be dislodged. If this is the case then proceed to the contact cleaning technique.
Contact Cleaning
Only use this method as a last resort. Use 99% laboratory quality isopropyl alcohol and clean cotton swabs. Dampen the swab in the alcohol and gently wipe the sensor in a single stroke. Do not reuse the same swab. Do not wipe the sensor if the sensor and swab are both dry. You must wipe the sensor quickly after immersion in the alcohol, or glue from the swab will contaminate the sensor window. Repeat this process until the debris is gone. If this process fails to remove the debris, then contact Prosilica.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
10
THE C-MOUNT IS ADJUSTED AT THE FACTORY AND SHOULD NOT REQUIRE ADJUSTING.
Adjusting the C-mount
Figure 4. Camera Front View.
If for some reason, the C-mount requires adjustment, use the following method.
Loosen Locking Ring
Use an adjustable wrench to loosen locking ring. Be careful not to scratch the camera. When the locking ring is loose, unthread the ring a few turns from the camera face. A wrench suitable for this procedure can be provided by Prosilica (P/N 11-0048A).
Image to Infinity
Use a c-mount compatible lens that allows an infinity focus. Set the lens to infinity and image a distant object. The distance required will depend on the lens used but typically 30 to 50 feet should suffice. Make sure the lens is firmly threaded onto the c-mount ring. Rotate the lens and c-mount ring until the image is focused. Carefully tighten locking ring. Recheck focus.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
11
Camera Installation
Computer Interface
The Prosilica GC Series cameras will work with any Ethernet network card; however Prosilica strongly recommends using Gigabit Ethernet components that support Jumbo Frames. A Jumbo Frame is loosely defined as a frame size greater than 1500 bytes however typical Jumbo Frames are around 9000 bytes. Frame size is the number of bytes per packet and the larger the frame size, the less the computer CPU will be loaded due to the processing of incoming packets.
There are many Gigabit Ethernet cards available which will support Jumbo Frames. The following examples have been verified to work well with the Prosilica cameras:
Intel PRO/1000 D-Link DGE-550T SMC EZ Card 1000
Gigabit Ethernet cards supporting this feature can also be purchased with the camera (Prosilica P/N 02-3002A).
Prosilica Inc.
GC1380H User Manual 70-0034A-D
12
Gigabit Ethernet Setup for Windows
o Install network card in computer. o Boot the PC and cancel the “Found new Hardware Wizard” window that may appear when
Windows detects the new card.
o Install the driver that came with the network card. o Once the driver is installed, open the Network Connections Dialog as follows: From the
Windows desktop select start, then select Control Panel, then double click on the Network Connections icon. Double click the relevant network card listed or right-click the relevant
network card and select Properties. This will open the properties window for your network card. See Figure 5.
Figure 5. Network card main properties window.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
13
o Select the Internet Protocol (TCP/IP) check box and then select Properties. See Figure 6.
Network card TCP/IP address.. Select the Use the following IP address and enter an IP address of 169. 254. x. y, where x and y can be any number. Press the TAB key after entering the IP address and the subnet mask will automatically be entered. The subnet mask is 255. 255. 0. 0. Click OK to save changes. Note that if Windows reports a conflict with the above IP address, simply repeat the above steps and change the last digit of the IP address to a different value.
Figure 6. Network card TCP/IP address.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
14
o Return to the Gige Local Properties window as in Figure 5. Select the Advanced tab as in
Figure 7 and disable the Firewall for this device. Click OK to save changes.
Gigabit Ethernet Cabling
All Gigabit Ethernet cabling and connectors should be CAT5E or CAT6 compatible. Cable lengths must not exceed 100 meters.
Power Connection
The camera requires a 12V DC power supply that can source a minimum of 500 mA of current. See the Connections section of this document for more information.
Figure 7. Turn off Firewall.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
15
Installing GigE Viewer for Testing
o The latest Viewer software can be downloaded from http://www.prosilica.com/support.htm. o Run the GigE Viewer Installer.exe. This will install the Prosilica Digital Camera drivers as
well as the Prosilica GigE Viewer application program.
o Plug in the Prosilica camera via the Gigabit Ethernet port. Plug in the power connection.
Verify that the Status LED 2 is a solid green. Run the Prosilica GigE Viewer Application. It will take a few seconds for the camera to be recognized. If the camera does not appear in the Viewer list after approximately 10 seconds then try disconnecting and reconnecting the power. If it still does not appear restart the viewer. If it still does not appear, see the Trouble Shooting section of this document.
o See Figure 8. Select the wrench icon to change camera settings. Change the PacketSize to a
value of 1500. Select the eye icon to image. The camera should now be imaging. If the camera is not imaging, see the Trouble Shooting section of this document. Note that the PacketSize can be set to 8228 if the network card has been optimized to support jumbo frames.
o See the System Optimization Section to maximize the performance of your system.
Prosilica Inc.
Figure 8. GigE Viewer application window.
GC1380H User Manual 70-0034A-D
16
System Optimization
o Open the Network Connections Dialog as follows: From the Windows desktop select start,
then select Control Panel, then double click on the Network Connections icon. Double click the relevant network card listed or right-click the relevant network card and select Properties. This will open the properties window for your network card. See Figure 9.
Figure 9. Network card main properties window.
o From the Properties window select Configure then select the Advanced tab. See Figure 10.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
17
Figure 10. Network card advanced settings.
o Set Maximum Frame Size or Jumbo Frames to the maximum possible value. A typical
value is 9000. If the list contains a property called Receive Descriptors, then change this value to its maximum value. Select OK to save properties.
o From the main properties dialog as in Figure 9, make sure that only the Internet Protocol
(TCP/IP) check box is selected then click OK. The card is now optimized for use with the
Prosilica camera.
o Open the viewer and set the PacketSize to 8228.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
18
Trouble Shooting
Is the camera getting power?
The right LED is the camera power indicator. If unlit, check the power adaptor. If possible, swap with one that is known to work. If using a custom power adaptor, be sure the adaptor and wire gauge is rated to at least 500 mA. If the right LED still does not light up, contact Prosilica support.
Is the camera powered, but not detected in SampleViewer?
Damaged or poor quality Ethernet cabling can result in no cameras found, dropped packets, decreased bandwidth, and other problems. Use Cat5e or better cabling known to work.
Configure your NIC as outlined in “Gigabit Ethernet Setup For Windows”. It should have an IP
address of 169.254.x.x, Subnet Mask: 255.255.0.0. This is the AutoIP address range. If your NIC has no access to a DHCP server, the camera will still be auto assigned an IP address. There should be no gateway on your NIC.
Connect a single camera directly to your NIC, no hub/switch, and run the prosilica IP Configuration utility (Start>Programs>Prosilica>GigEIPConfig or C:\Program Files\Prosilica\GigEViewer\ipconfig.exe). You may need to wait up to 30 sec for camera to appear.
A camera in DHCP (AutoIP fallback) mode.
Camera is listed: Your camera and NIC must be on the same subnet, e.g.: NIC: IP
169.254.23.2 Subnet Mask: 255.255.0.0, Camera IP: 169.254.43.3 Subnet Mask: 255.255.0.0.
Prosilica Inc.
GC1380H User Manual 70-0034A-D
19
The following example is not on the same Subnet: NIC IP 169.250.23.2 Subnet Mask:
255.255.255.0, CamIP 169.254.13.0 Subnet Mask: 255.255.0.0. This can happen if you use a non
AutoIP range on your NIC and it doesn’t have access to a DHCP server. Either change your NIC
IP to be in the AutoIP range, or fix the camera IP address to be on the same subnet as your NIC.
Camera is not listed, or flashing “Camera Unavailable”: There may be multiple NICs on
your system set to the same subnet. The camera can not know which card to resolve to. Change the IP address of your NIC.
If you are still having problems, type: ipconfig /all in a windows command prompt, and send a screenshot to Prosilica support.
Ipconfig /all screenshot
Is the camera listed in SampleViewer but can’t acquire images?
Reset your camera settings to factory default: with ConfigFileIndex = Factory, click the ConfigFileLoad button.
While streaming, check your Stats:
Prosilica Inc.
GC1380H User Manual 70-0034A-D
20
All stats 0 while streaming. Firewall likely blocking traffic
All stats 0. Likely a firewall is blocking incoming traffic. Disable your firewall. Check
your camera trigger settings. Many camera trigger modes require a software or hardware trigger event to capture frames.
Packets are incoming, but all dropping. Be sure you have JumboFrames enabled on your
NIC. Otherwise, decrease your PacketSize setting to 1500.
All packets completing as normal, but black image. Check ExposureValue,
ExposureMode, and be sure your scene is suitably lit.
If you are still having problems acquiring images, please send your camera settings file (click on the disk icon in SampleViewer) to Prosilica support.
Saving camera setting file
Prosilica Inc.
GC1380H User Manual 70-0034A-D
21
Addendum
Prosilica Inc.
GC1380H User Manual 70-0034A-C
Prosilica Inc.
22
GC IO Schematic
390R
1/8W
0.1u
SYNC INPUT 2
0.1u
POWER GR OUND
VDD-3.3
VDD-3.3
LOGIC SY NC OUTPUT 1
SYNC INPUT 2
0.1u
12V POWER
LOGIC SY NC INPUT 1
LOGIC TXD
RS232-TXD
VDD-3.3
LOGIC SY NC OUTPUT 2
AS SEEN FROM CAMERA REAR VIEW
2K
SYNC OUTPUT 1
SYNC OUTPUT 2
RS232-RXD
MOCD207M
FAIRC HILD
1
2
3
4
8
7
6
5
SYNC INPUT 1
VDD-3.3
1
2
3
4
5
6
7
8
9
10
11 12
HIROSE HR10A-10R-12PB
1 2 3 4 5 6 7 8 9 10 11 12
CAMERA INTERNAL CIRCUIT
RS232-RXD
LOGIC SY NC INPUT 2
SYNC OUTPUT 2
ISOLATED GROU ND
0.1u
MAX3221CPWR
MAXIM 1 2 3 4 5 6 7 8 9
10
11
12
13
14
15
16
EN C1+ V+ C1­C2+ C2­V­RIN ROUT
INVALID
DIN
FORCEON
DOUT
GND
VCC
FORCEOF F
LOGIC R XD
ISOLATED GROU ND
SN74LVC2G241DC U
TEXAS INSTRUMENTS
1 2 3 45
6
7
8
1OE
1A 2Y
GND2A
1Y
2OE
VCC
200R
SYNC OUTPUT 1
RS232-TXD
SYNC INPUT 1
GC1380H User Manual 70-0034A-C
Prosilica Inc.
23
Isolated Trigger Schematic
SYNC INPUT 1
R1
USERS TRIGGER CIRCUIT
4.7K
SYNC INPUT 1 (DRIVER)
SYNC OUTPUT 1
USER POWER
1.8K
R2
1
2
3
4
5
6
7
8
9
10
1112
HIROSE HR10A-10P-12S
1 2 3 4 5 6 7 8
9 10 11 12
USER POWER
R1
2.7K
ISOLATED GROUND
5V
RECOMMENDED VALUES
12V POWER
12V_POWER
12V
SYNC OUTPUT 1 (RECEIVER)
0
CABLE SIDE
1K
0.7K
POWER GROUND
R2
POWER GROUND
24V
This circuit assumes a 10mA drive current (I
F
) from User’s trigger circuit into camera through R1. R2 is connected to the open collector of
Fairchild MOCD207. The corresponding transistor emitter is connected to isolated ground. See the Fairchild MOCD207 datasheet for more detailed information.
GC1380H User Manual 70-0034A-C
Prosilica Inc.
24
Non-isolated Trigger Schematic
SYNC OUTPUT 2
SYNC INPUT 2 (3.3V DRIVER)
USERS TRIGGER CIRCUIT
12V POWER
1
2
3
4
5
6
7
8
9
10
1112
HIROSE HR10A-10P-12S
1 2 3 4 5 6 7 8
9 10 11 12
POWER GROUND
SYNC OUTPUT 2 (3.3V RECEIVER)
CABLE SIDE
POWER GROUND
SYNC INPUT 2
12V_POWER
The non-isolated trigger circuit is connected to a Texas Instruments SN74LVC2G241 buffer/driver inside the camera. The required sync input current is less than 10uA and the maximum sync output current is 24mA. See the Texas Instruments SN74LVC2G241 for more detailed information.
GC1380H User Manual 70-0034A-C
Prosilica Inc.
25
Video Iris Schematic
JEITA CONNECTOR
1 2 3 4
POWER GROUND
12V_POWER
LENS GROUND
LENS POWER
12V POWER
POWER GROUND
1
2
3
4
5
6
7
8
9
10
1112
HIROSE HR10A-10P-12S
1 2 3 4 5 6 7 8
9 10 11 12
CABLE SIDE
VIDEO SIGNAL
GC1380H User Manual 70-0034A-C
Prosilica Inc.
26
Trigger Timing Diagram
User Trigger
Logic Trigger
Exposure
Readout
Trigger Ready
Imaging
Tpd
Trigger Latency
Interline Time
Expose Start
Delay
Trigger Jitter
Idle
Registered Exposure Time
Readout Time
N
N+1NN+1
GC1380H User Manual 70-0034A-C
27
Notes on Triggering
Definitions
o User Trigger is the trigger signal applied by the user. o Logic Trigger is the trigger signal seen by the camera internal logic. o Tpd is the propagation delay between the User Trigger and the Logic Trigger. o Exposure is high when the camera image sensor is integrating light. o Readout is high when the camera image sensor is reading out data. o Trigger Latency is the time delay between the User Trigger and the start of Exposure. o Trigger Jitter is the error in the Trigger Latency time. o Trigger Ready indicates to the user that the camera will accept the next trigger. o Registered Exposure Time is the Exposure Time value currently stored in the camera
memory.
o Expose Start Delay is the delay time from the start of Exposure to valid Trigger Ready. It is
the Registered Exposure Time subtracted from the Readout time and indicates when the next Exposure cycle can begin such that the Exposure will end after the current Readout.
o Interline Time is the time between sensor row readout cycles. o Imaging is high when the camera image sensor is either exposing and/or reading out data. o Idle is high if the camera image sensor is not exposing and/or reading out data.
Rules
o The User Trigger pulse width should be at least three times the width of the Trigger Latency
as indicated in the Specifications section of this document.
o The end of Exposure will always trigger the next Readout. o The end of Exposure must always end after the current Readout. o The start of Exposure must always correspond with the Interline Time if Readout is true. o Expose Start Delay equals the Readout time minus the Registered Exposure Time.
Triggering during the Idle State
o For applications requiring the shortest possible Trigger Latency and the smallest possible
Trigger Jitter the User Trigger signal should be applied when Imaging is false and Idle is true.
o In this case, Trigger Latency and Trigger Jitter are as indicated in the Specifications section.
Prosilica Inc.
GC1380H User Manual 70-0034A-C
28
Triggering during the Readout State
o For applications requiring the fastest triggering cycle time whereby the camera image sensor
is exposing and reading out simultaneously, then the User Trigger signal should be applied as soon as a valid Trigger Ready is detected.
o In this case, Trigger Latency and Trigger Jitter can be up to 1 line time since Exposure must
always begin on an Interline boundary.
Prosilica Inc.
Loading...