CLM-602 User`s Manual
Contents
1. The messages are not case sensitive Below are a few examples of valid camera selection command messages CAM MUX B cam mux A Cam Mux a The following message 15 an example of a camera selection query in which the CLM 602 returns the currently selected camera A or B Message sent to CLM 602 Cam Mux Response from CLM 602 A 12 1 4 3 3 Camera Link Serial Communication CLM 602 camera selection is controlled via the serial communication link in Camera Link interface when the camera control switch 1s in position 6 In this mode the CLM 602 1s controlled via a serial port in the frame grabber Consult your frame grabber documentation for information about accessing the port Controlling the CLM 602 via the Camera Link serial link is similar to RS 232 control described in the prior section except the communication link is unidirectional The CLM 602 receives the camera control message described but does not return any messages to the frame grabber The CLM 602 will not issue the startup message or support camera query while in this mode This restriction avoids potential communication conflicts between the camera and the CLM 602 and ensures that camera control functions normally 13 1 5 Typical Application A typical CLM 602 Camera Link Multiplexer application is shown in Figure 1 3 Two full configuration cameras are connected to the multiplexer using standard Camera Link cable pairs Another cable pair 152. CLM 602 Front Panel 16 2 2 Rear Panel Connections The CLM 602 Camera Link Multiplexer rear panel 15 shown in Figure 2 3 The rear panel contains two 26 pin MDR video connectors for connecting to the frame grabber the RS 232 port connector two select switches and the DC power jack The RS 232 serial port connector 1s a standard 9 pin male D Sub type DB9 Figure 2 4 identifies the DB9 pin positions The Camera Select and Baud Rate select switches are 8 position rotary style The switches are recessed to avoid inadvertent changes A small screwdriver is suggested for changing switch positions The DC power jack accepts either a standard 2 1 x 5 5 mm barrel style power plug or a special locking plug The locking plug has bayonet style ears on the barrel Once inserted the plug is turned Y4 turn clockwise This locks the connection and provides retention Plug polarity is center positive The recommended locking power plug is Philmore part number 2150 CAMERA SELECT A B CC1 CC2 Medium Full CC3 CC4 Serial Base RS 232 FRAME GRABBER BAUD RATE 2400 4 38400 4800 5 57600 9600 6 115200 19200 7 230400 0 1 2 3 4 5 6 7 Figure 2 3 CLM 602 Rear Panel 17 pin 1 pin 5 jo pin6 pin 9 Figure 2 4 DB9 Connector Pin Positions 2 2 1 DB9 Connector Signals The DB9 connector signal assignments are compliant with the RS 232 serial interface standard Table 2 1 identifie
3. 2 Mode Switch 3 ea TH T Table 1 4 CC3 Mode Switch 4 a H eman Table 1 5 CC4 Mode Switch 5 tate 1 4 2 Baud Rate Switch The serial control modes operate at the data rate identified by the baud rate switch The ability to select the baud rate is of particular use when the Camera Link serial communication link 15 being used to control both the camera and the CLM 602 The CLM 602 can be set to operate at the same data rate as the camera enabling the transfer of control messages to the camera along with control messages to the CLM 602 The baud rate switch settings are listed in Table 1 6 Table 1 6 Baud Rate Settings Camera Select Switch Select Mode Position 57600 115200 1 4 3 Serial Control The serial communication modes Switch positions 6 amp 7 enable camera selection via control messages over the Camera Link serial link or through the external serial port RS 232 or USB with optional adapter When the Camera Select switch 15 at position 6 the CLM 602 responds to serial messages sent over the serial link in the Camera Link interface When the switch 15 in position 7 the CLM 602 responds to serial messages sent via the RS 232 port located on the rear panel or USB port via optional adapter The CLM 602 incorporates a simple single command Command Line Interface CLI for controlling the CLM 602 The serial port protocol settings are conventional and a
4. 602 control messages can be combined on the same serial link More details are provided in Section 1 4 3 The CLM 602 camera and frame grabber interfaces incorporate the connector signals pinout and chipset in compliance with the Camera Link specification The CLM 602 incorporates the full 1 e dual cable configuration signal set consisting of video data camera control and serial communications The CLM 602 also works with 80 bit medium configuration and base configuration single cable configuration cameras The CLM 602 incorporates high speed 85 MHz interfaces The CLM 602 adds minimal delay 1 6 latency to the video data path This is an important criterion for time critical applications The latency through the CLM 602 19 a fixed 3 pixel clock delay The pixel clock is established by the camera and can range from 20 85 MHz Therefore the CLM 602 fixed delay can range from 35 to 150 nS depending on camera The delay added by the CLM 602 for the camera control and serial communication signals is under 15 nS LED camera select indicators are located next to the camera connectors to identify the current camera selection The CLM 602 DC power input 15 electrically isolated from the internal circuitry This feature ensures compatibility with user power systems The CLM 602 is powered by an external wall plug in power supply A multi nation power supply is standard Optionally the CLM 602 15 available with a locking plug powe
5. 9 3 Mechanical 3 1 Dimensions The CLM 602 Camera Link Video splitter cabinet dimensions are shown in Figure 3 1 The CLM 602 is housed in a sturdy aluminum enclosure The body is extruded aluminum with detachable front and rear endplates The enclosure incorporates a mounting flange The flange contains four predrilled holes 0 15 diameter for convenient equipment mounting A mounting footprint drawing 1s provided in Figure 3 2 Vivia Engineering Camera Link Multiplexer CLM 602 ay EY Medium Full Medium Full 2 08 o 9 Base Base CAMERA A CAMERA B Figure 3 1 CLM 602 Cabinet Dimensions 20 Rear 6 12 5 62 Mounting Holes 4 0 15 dia Front ae 5 28 Figure 3 2 Mounting Footprint Drawing 3 2 External Power Supply The CLM 602 is powered by 4 5 9 0 VDC and incorporates a 2 1 x 5 5 mm DC power jack that accepts either a standard barrel style power plug or a special locking version see Section 2 2 Power plug polarity is center positive The CLM 602 includes a multi nation wall mount power supply that handles a wide power range 90 264 VAC 47 63 Hz and comes with a set of outlet plugs suitable for most countries US Europe UK etc The CLM 602 may also be purchased with a locking plug power supply or without power supply 21 4 Revision Hist
6. CLM 602 CAMERA LINK MULTIPLEXER User s Manual Document 201232 Rev 0 1 2 17 2014 preliminary Vivid Engineering 159 Memorial Drive Suite F Shrewsbury MA 01545 Phone 508 842 0165 Fax 508 842 8930 Email info vividengineering com Web www vividengineering com Table of Contents 1 1 1 2 1 3 1 4 1 4 1 1 4 2 1 4 3 1 4 3 1 1 4 3 2 1 4 3 3 1 5 1 6 2 1 2 2 2 2 1 2 3 2 4 3 1 3 2 Introduction Overview Features Functional Description Camera Selection Camera Select Switch Baud Rate Switch Serial Control USB Support Optional RS 232 Serial Port Communication Camera Link Serial Communication Typical Application Specifications Interface Front Panel Connections Rear Panel Connections DB9 Connector Signals Video Connectors Cable Shield Grounding Mechanical Dimensions External Power Supply Revision History cd JO OU N 10 11 13 14 15 16 16 17 18 19 19 20 20 21 22 1 Introduction 1 1 Overview The CLM 602 Camera Link Multiplexer interfaces two Camera Link cameras of any configuration base medium full 80 bit to one frame grabber using standard Camera Link cables This capability supports applications requiring the ability to switch between multiple cameras The CLM 602 incorporates high speed 85 MHz interfaces and works with any Camera Link camera The CLM 602 provides multiple camera selection methods including rear panel switch settings Camera
7. Link interface signals serial or camera control and an external RS 232 port An inexpensive optional adapter supports control of the CLM 602 via a PC USB port The CLM 602 Camera Link Multiplexer is housed in a sturdy compact aluminum enclosure Vivia Engineering Camera Link Multiplexer CLM 602 ay o ol wzy lo Medium Full Medium Full e o o ol Ezy lo e Base CAMERA B Base CAMERA A O 1 The Camera Link interface standard enables the interoperability of cameras and frame grabbers regardless of vendor The Automated Imaging Association ALA sponsors the Camera Link program including the oversight Camera Link Committee the self certification program and the product registry The Camera Link specification may be downloaded from the AIA website found at www machinevisiononline org 1 2 Features Interfaces two cameras to one frame grabber Supports all Camera Link configurations base medium full 80 bit High speed 85 MHz design supports all Camera Link cameras Multiple camera selection methods o Camera Link interface serial messages o Camera Link interface Camera Control CC signals o Standard RS 232 port o Standard USB port w optional adapter o Fixed switch settings Passes all interface signals video data serial comm camera control Minimal video data pass through latency 3 camera pixel clocks Minimal contr
8. ol communication pass through latency under 15 nS LED camera select indicators Sturdy compact aluminum enclosure w mounting flange Isolated DC power input Multi nation power supply included locking plug power supply optional RS 232 cable included 3 year warrantee 1 3 Functional Description A block diagram of the CLM 602 is provided in Figure 1 1 The CLM 602 interfaces two base medium full or 80 bit configuration Camera Link cameras to one frame grabber using standard Camera Link cables This capability supports applications requiring the ability to switch between cameras The CLM 602 is essentially an electronic version of an electromechanical switch When commanded the CLM 602 instantaneously disconnects from one camera and connects to the other The two cameras denoted A amp B connect to the front of the CLM 602 The frame grabber connects to the rear The camera selection method is determined by the Camera Select switch located on the rear panel The camera selection options are Camera Link serial port messages Camera Link Camera Control signals CC1 CC2 CC3 or CC4 External RS 232 or USB w optional adapter serial port messages Fixed selection A or B When serial communication Camera Link or RS 232 USB 15 used to select the camera the data rate is specified via the rear panel baud rate switch The baud switch enables the user to operate the CLM 602 at the same data rate as the camera so camera and CLM
9. ory Table 5 1 CLM 602 User s Manual Revision History 201232 0 1 2 17 14 Preliminary release of manual 22
10. r supply The locking plug reduces the risk of accidental disconnection from the rear panel power jack The CLM 602 15 also available without power supply An RS 232 serial cable 15 included The CLM 602 Camera Link Multiplexer 1s housed in a sturdy compact aluminum enclosure To Camera Link Cameras 2 Channel A Video Data Link Receivers A Camera Control lt es Xmtr LVDS Xmtr Xmtr A Serial LVDS Revr Comm LVDS Xmtr po S Video Transmitters Data LVDS Revr Camera Control al A LVDS Revr Serial anne LVDS Xmtr Xmt Comm B Video Data Link i Receivers B Camera LVDS Xmtr Control 8 Serial LVDS Revr Sia Comm LVDS Xm switche sa BA Switches 1 g Mus Control 1 3 N leas TAS Lal 6 232 Serial CLM 602 Camera Link Multiplexer 199Q81 ewes yur 8 9 8 oL Figure 1 1 CLM 602 Block Diagram 2199 8 ern gsn 10 HOd ZEC SUY Dd OL 1 4 Camera Selection The CLM 602 supports a variety of camera selection methods The different methods are described in the following sections The camera selection mode 15 determined by the camera select switch located on the rear panel The rear panel also includes a baud rate switch for use with the serial con
11. re defined in Table 1 5 Note that the baud rate is determined by the baud rate switch 9600 baud is a common rate for control applications Table 1 5 Serial Port Settings Rate bits per second Per Baud Rate Switch Note that when in the serial control modes the CLM 602 will default select camera A following power up Slight differences exist between the Camera Link serial link and the RS 232 USB port which will be pointed out in the following sections 1 4 3 1 USB Support Optional USB can be used instead of RS 232 for the external serial port using an optional external USB to serial RS 232 adapter This eliminates the problem with using newer desktop and laptop computers that do not incorporate a serial port One side of the USB to serial adapter plugs into the PC USB port The other side of 10 the adapter connects to the RS 232 serial cable included with the 602 Once installed the PC will create a new serial COM port that may be accessed using the PC in the same fashion as the standard RS 232 serial port Driver software installation may be required A tested and inexpensive USB to serial converter 15 available from Vivid Engineering These converters are readily available online 1 6 Amazon 1 4 3 2 RS 232 Serial Port Communication CLM 602 camera selection is via the rear panel RS 232 port when the camera control switch 15 in position 7 In this mode the CLM 602 15 connected to a control computer RS 232 por
12. s the DB9 signal assignments Table 2 1 DB9 Connector RE DB9 Pin Signal Direction Signal Name Received Line Signal Detect 1 tied to pins 4 8 6 PC CLM 602 E ams T Received Data Transmitted Data Data Terminal Ready Signal Ground common DCE Ready Request To Send 7 Clear To Send tied to pin 8 tied to pin 7 Ring Indicator PC Control PC 18 2 3 Video Connectors The MDR 26 video connector signal assignments comply with the Camera Link full configuration providing compatibility with all Camera Link cameras and frame grabbers base medium full 80 bit The camera connector signal assignments correspond to the frame grabber interface defined in the Camera Link Specification Conversely the frame grabber connector assignments are as defined for the camera interface in the Camera Link Specification This arrangement provides compatibility with standard Camera Link cables 2 4 Cable Shield Grounding Camera and frame grabber cable outer shields are connected to the CLM 602 aluminum case Case and endplate contacting surfaces are unpainted providing a Faraday cage to shield internal circuitry The case is isolated from the CLM 602 circuitry and the cable inner shields The camera and frame grabber cable inner shields connects to circuit digital ground maintaining signal reference levels between the cameras and the CLM 602 and between the CLM 602 and the frame grabber 1
13. t or USB port using optional adapter The user can control the CLM 602 using communications software such as HyperTerminal CLM 602 control may also be incorporated into a user s control program via standard COM port commands The RS 232 serial port incorporates a standard 9 pin D Sub DB9 connector Connector information 15 provided in Section 2 2 A null modem cable 15 included for connecting the CLM 602 to a PC serial port or USB adapter if used When in RS 232 mode the CLM 602 will send the following message to the RS 232 port upon power up CLM 602 Camera Link Multiplexer CLI Vivid Engineering Rev 1 0 Note that Camera A will be selected by default following power up The CLM 602 will not echoe back characters received via the RS 232 port CLM 602 camera selection is controlled via the ASCII CAM MUX control message of the following form CAM MUX x Where x is the character A B or The message must be exactly as shown with one space between CAM MUX and the A B or The message must be immediately followed by an ASCII carriage return or new line i e 11 RETURN or ENTER on a PC keyboard The CLM 602 does not support the inclusion of additional spaces backspace delete etc When A or B are entered the CLM 602 will immediately change selection to the corresponding camera When 2 is entered the CLM 602 will respond by returning the current camera selection A or B
14. trol modes The rear panel switches are shown in Figure 1 2 CAMERA SELECT BAUD RATE 4 CC3 2400 4 36400 1 5 5 CC4 4800 5 57600 2 CC1 6 Serial f 9600 6 115200 3 CC2 7 RS 232 19200 7 230400 Figure 1 2 Rear Panel Select Switches Note that camera selection changes are hard switches The camera selection is performed immediately Care should be used while switching to pause halt reset the frame grabber as required to avoid malfunction 1 4 1 Camera Select Switch The camera select switch provides eight camera selection modes The camera select modes are defined in Table 1 1 The selection modes are described in the following sections Table 1 1 Camera Select Modes ame ei eri Switch positions 0 1 provide fixed camera A B selection Camera selection 1s fixed static and is unaffected by the camera control signal states or the serial control messages Switch positions 2 5 enable camera selection based on the states of the Camera Control CC that are part of the Camera Link interface Camera selection may be made by CC signals 1 2 3 or 4 Camera Control signals 3 4 are generally unused by cameras and are available for controlling the multiplexer Switch positions 2 5 select the camera based on the CC states shown in Table 1 2 through 1 5 Note that the frame grabber must hold the CC lines in a steady static state Table 1 2 CC1 Mode Switch 2 a ea mea Table 1 3 CC
15. used to connect the multiplexer to the frame grabber Note that the cameras need not be identical Any combination of base medium full 80 bit configuration cameras may be used In this example the CLM 602 RS 232 port is unconnected Note that camera selection changes are hard switches The camera selection is performed immediately Care should be used to pause halt reset the frame grabber during the switch if necessary to avoid malfunction CLM 602 Mi Camera Link Multiplexer 70020 1111111111 Camera Link Frame Grabber Camera Link Cameras full config Camera Link Cable Pairs Figure 1 3 CLM 602 Typical Application 14 1 6 Specifications Table 1 6 CLM 602 Specifications Camera Link Spec full configuration with 80 bit support Control amp communication 15 5 max 4 5 9 VDC internally isolated xxx 5 VDC typical Cabinet Dimensions 5 28 L x 2 08 H x 6 12 D wh Operating Temperature Range Storage Temperature Range Power Requirements 15 2 Interface 2 1 Front Panel Connections The CLM 602 Camera Link Multiplexer front panel is shown in Figure 2 1 The front panel contains six four pin MDR video connectors two for camera A and two for camera B Two LEDs identify the selected camera Vivia Engineering Camera Link Multiplexer CLM 602 Medium Full Medium Full Figure 2 1
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