Vivid CAMERA LINK CLM-601 User manual

CLM-601 CAMERA LINKTM MULTIPLEXER
User’s Manual
Document # 200519, Rev 1.0, 09/22/06
Vivid Engineering
418 Boston Turnpike #104 • Shrewsbury, MA 01545
Phone [phone] • Fax [phone]
Email [email protected]
Web www.vividengineering.com

Table of Contents
1. Introduction 1
1.1. Overview 1
1.2. Features 3
1.3. Functional Description 4
1.4. Camera Selection 6
1.4.1. Camera Select Switch 7
1.4.2. Baud Rate Switch 9
1.4.3. Serial Control 10
1.4.3.1. RS-232 Serial Port Communication 10
1.4.3.2. Camera LinkTM Serial Communication 12
1.5. Typical Application 13
1.6. Specifications 14
2. Interface 15
2.1. Front Panel Connections 15
2.2. Rear Panel Connections 16
2.2.1. DB9 Connector Signals 17
2.3. Camera Connector Signals 18
2.3.1. Cable Shield Grounding 18
3. Mechanical 20
3.1. Dimensions 20
3.2. External Power Supply 21
4. Regulatory Compliance 22
4.1. FCC Compliance Statement 22

4.2. Canadian Compliance Statement 22
5. Revision History 23

1
1. Introduction
1.1. Overview
The CLM-601 Camera LinkTM 1Multiplexer interfaces up-to four base configuration
Camera LinkTM cameras to one frame grabber using standard Camera LinkTM cables. This
capability supports applications requiring the ability to select between multiple cameras.
The CLM-601 incorporates high-speed (85 MHz) interfaces and works with any base
camera.
The CLM-601 provides multiple camera selection methods including rear-panel switch
settings, Camera LinkTM interface signals (serial or camera control), and an external RS-
232 port. Medium configuration cameras are supported using two CLM-601s in parallel.
Multiple CLM-601s may be cascaded to support more than four cameras.
The CLM-601 Camera LinkTM Multiplexer is housed in a sturdy, compact aluminum
enclosure and is well suited for industrial and OEM applications.
1The Camera LinkTM interface standard enables the interoperability of cameras and frame grabbers,
regardless of vendor. The Automated Imaging Association (AIA) sponsors the Camera LinkTM
program including the oversight Camera Link Committee, the self-certification program, and the
product registry. The Camera LinkTM specification may be downloaded from the AIA website,
found at www.machinevisiononline.org
Camera LinkTM is a trademark of the Automated Imaging Association
WindowsTM is a trademark of Microsoft Corporation
HyperTerminalTM is a trademark of Hilgraeve Inc.

2
Camera Link Multiplexer CLM-601
V ivid E ngineering
CAMERA C
CAMERA A CAMERA B
CAMERA D

3
1.2. Features
•Interfaces up-to four cameras to one frame grabber
•High-speed (85 MHz) design supports all base configuration cameras
•Multiple camera selection methods:
oCamera LinkTM interface serial messages
oCamera LinkTM interface Camera Control (CC) signals
oStandard RS-232 port
oFixed selection via switch settings
•Passes all interface signals (video data, serial comm, camera control)
•May be cascaded to support greater than four cameras
•Medium configuration support using two CLM-601s
•LED camera select indicators
•Sturdy, compact aluminum enclosure w/ mounting flange
•Optional external power supply
•RS-232 cable included
•FCC Class A regulatory compliance
•3-year warrantee

4
1.3. Functional Description
A block diagram of the CLM-601 is provided in Figure 1-1. The CLM-601 interfaces up-
to four base configuration Camera LinkTM cameras to one frame grabber using standard
Camera LinkTM cables. This capability supports applications requiring the ability to select
between multiple cameras.
The cameras, denoted A/B/C/D, connect to the front of the CLM-601, and 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 LinkTM serial port messages
•Camera LinkTM Camera Control signals (CC1/CC2 or CC3/CC4)
•External RS-232 serial port messages
•Fixed selection (A,B,C, or D)
When serial communication (Camera LinkTM or RS-232) is 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-601 at the same data rate as the camera, so camera and CLM-601
control messages can be combined on the same serial link. More details are provided in
Section 1.4.3.
LED camera select indicators are located next to the camera connectors to identify the
current camera selection.
Multiple CLM-601s may be cascaded to support more than four cameras. Medium
configuration cameras can be supported using two CLM-601s.
The CLM-601 camera and frame grabber interfaces incorporate the connector, signals,
pinout, and chipset in compliance with the Camera LinkTM specification. The CLM-601
incorporates the “base” (single cable) configuration signal set, consisting of video data,
camera control, and serial communications. The CLM-601 incorporates high-speed (85
MHz) interfaces and supports any base configuration camera.
The CLM-601 Camera LinkTM Multiplexer is housed in a sturdy, compact aluminum
enclosure and is well suited for industrial and OEM applications.
The CLM-601 is powered by an external wall plug-in power supply (optional). A null
modem cable for use with the RS-232 port is included.

5
To Camera Link
TM
Cameras (4)
To Camera Link
TM
Frame Grabber
CLM-601 Camera Link
TM
Multiplexer
LVDS Rcvr
A Video Data
A Camera
Control
A Serial
Comm LVDS Xmtr
Channel
Link
Receiver
LVDS Xmtr
LVDS Rcvr
B Video Data
B Camera
Control
B Serial
Comm LVDS Xmtr
Channel
Link
Receiver
LVDS Xmtr
LVDS Rcvr
C Video Data
C Camera
Control
C Serial
Comm LVDS Xmtr
Channel
Link
Receiver
LVDS Xmtr
LVDS Rcvr
D Video Data
D Camera
Control
D Serial
Comm LVDS Xmtr
Channel
Link
Receiver
LVDS Xmtr
Serial
Port
Mux
LVDS Rcvr
Video
Data
Camera
Control
Serial
Comm
LVDS Xmtr
Channel
Link
Transmitter
LVDS Rcvr
To PC RS-232 Port
RS-232
Mux
Control
3
0
2
4
567
1
3
0
2
4
567
1
Select
Switches
Figure 1-1: CLM-601 Block Diagram

6
1.4. Camera Selection
The CLM-601 supports a variety of camera selection methods. The different methods are
described in the following sections. The camera selection mode is 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 control modes. The rear-panel switches are shown in Figure
1-2.
BAUD RATE
0 - 2400 4 - 38400
1 - 4800 5 - 57600
2 - 9600 6 - 115200
3 - 19200 7 - 230400
3
0
2
4
567
1
CAMERA SELECT
0 - A 4 - CC 1&2
1 - B 5 - CC 3&4
2 - C 6 - Serial
3 - D 7 - RS-232
3
0
2
4
567
1
Figure 1-2: Rear-Panel Select Switches
Note that camera selection changes are “hard” switches. The camera selection is
performed immediately. As a precaution, care should be used to pause/halt the frame
grabber while the switch is being made to avoid frame grabber malfunction.

7
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
Camera Select Switch Mode
0 Camera A
1 Camera B
2 Camera C
3 Camera D
4 Camera Control CC1 & CC2
5 Camera Control CC3 & CC4
6 Camera LinkTM serial link
7 RS-232 serial port
Switch positions 0-3 provide fixed camera A/B/C/D selection. Camera selection is
fixed (static) and is unaffected by the camera control signal states or the serial control
messages.
Switch positions 4-5 enable camera selection based on the states of the Camera
Control (CC) that are part of the Camera LinkTM interface. Camera selection may be
made by CC signals 1&2, or by 3&4. Camera Control signals 3&4 are often unused
by the camera and are available for controlling the multiplexer. Switch position 4
selects the camera based on the states of CC1 & CC2 as shown in Table 1-2. Switch
position 5 selects the camera based on the states of CC3 & CC4 as shown in Table 1-
3. Note that the frame grabber must hold the CC lines in a steady (static) state.