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Vivid CLT-371A User Manual

Camera link translator
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C LT - 3 7 1 A C AM E R A LI N K TR AN S LATOR
User's Manual
Document # 201488, Rev 0.1, 8/31/2023 (preliminary)
© Vivid Engineering
415 Boston Turnpike, Suite 305 • Shrewsbury, MA 01545
Phone 508.842.0165 • Fax 508.842.8930
www.vividengineering.com • info@vividengineering.com

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  • Page 1 C LT - 3 7 1 A C AM E R A LI N K TR AN S LATOR User’s Manual Document # 201488, Rev 0.1, 8/31/2023 (preliminary) © Vivid Engineering 415 Boston Turnpike, Suite 305 • Shrewsbury, MA 01545 Phone 508.842.0165 • Fax 508.842.8930...

  • Page 2: Table Of Contents

    T able of Contents Introduction 1.1. Description 1.2. Features 1.3. Block Diagram 1.4. Limitations Operation 2.1. Camera Connection 2.1.1. PoCL Camera Support 2.2. HD-SDI Connection 2.2.1. HDMI / DVI-D Output Support 2.3. Configuration Switches 2.3.1. PIXEL_DEPTH 2.3.2. DVAL_ENABLE 2.3.3. COLOR 2.3.4.
  • Page 3 2.3.13. SYNC_SHAPE 2.3.14. SYNC_INVERT 2.3.15. SYNC_ON_CC1 Examples 3.1. Stand-Alone Application 3.2. Camera Control Application 3.3. Video Splitter Application 3.4. Configuration Example Specifications Interface 5.1. Front Panel Connections 5.2. Rear Panel Connections Mechanical 6.1. Dimensions 6.2. External Power Supply Revision History...

  • Page 4: Introduction

    CLT-371A front-panel indicators identify when the unit is powered, when an active camera is connected, and when the camera is synchronized to the HD-SDI video output. The CLT-371A is housed in a sturdy aluminum enclosure. A locking-plug power supply is optional.

  • Page 5: Features

    - HDMI & DVI-D output via an external converter • Works with most Camera Link color and monochrome base-configuration cameras - PoCL cameras supported using Vivid CLR-102 adapter • HD-SDI 1920x1080 @ 29.97p or 30p, 1280x720 @ 59.94p or 60p •...

  • Page 6: Block Diagram

    Camera Driver Interface - Synchronization trigger generation Control - Camera synchronization detect (Sync) - Test patern generator Serial Comm Image Image Buffers Serial Frame RS-232 Status Buffers Comm Port Buffers Indicators Sync Sync & Reset Reset CLT-371A Camera Link Translator...

  • Page 7: Limitations

    The CLT-371A is a “standard product” converter from Camera Link to HD-SDI and works with most base-configuration cameras. However, Camera Link cameras vary widely. The following is a list of requirements and limitations when using the CLT-371A: Minimum Image Size: The camera image must be at least 128 pixels per line, and 4 lines per frame (128x4).

  • Page 8: Operation

    2. Operation 2.1. Camera Connection The CLT-371A is designed to work with most Camera Link base configuration cameras. A “base” configuration camera can be identified by the existence of only one Camera Link connector. The CLT-371A incorporates the standard Camera Link “MDR” (i.e. full size). A standard Camera Link cable is used to connect the camera to the CLT-371A.

  • Page 9: Hd-Sdi Connection

    The “Mode 1” slide switch has 12 positions and identifies camera characteristics. The “Mode 2” slide switch has 8 positions and selects HD-SDI output characteristics. The mode switches may be changed at any time. In some cases, cycling the CLT-371A power or asserting the reset input may be needed following changes.

  • Page 10: Pixel_Depth

    1 2 3 4 5 6 7 8 9 10 11 12 WHITE BALANCE SELECT WHITE BALANCE WRITE ENB - Enable - Disable WHITE BALANCE ENABLE - Enable - Disable BAYER PATTERN - Green - Red - Red - Green - Green - Blue - Blue - Green COLOR...
  • Page 11 1 2 3 4 5 6 7 8 SYNC ON CC1 - Enable - Disable SYNC INVERT - Inverted - Normal SYNC SHAPE - Square wave - Pulse TEST PATTERN - On - Off CENTER DISABLE - No centering - Center Image FRAME RATE - 29.97 / 59.94 fps - 30 / 60 fps...

  • Page 12: Color

    DVAL is low the current video data should be ignored. In practice, most Camera Link cameras do not use DVAL (or do not use DVAL properly) and the default (down) switch position causes the CLT-371A to ignore the signal. All received video data is considered valid.

  • Page 13: White_Balance_Write_Enb

    Mode Switch 1 position 11 is the white balance select. The white balance select switch determines which balance coefficient set (A or B) stored in the CLT-371A is used when Bayer white balance correction is enabled. The switch setting also determines which coefficient set is updated during a white...

  • Page 14: White_Balance_Trigger

    CENTER_DISABLE Mode Switch 2 position 3 disables automatic image centering. Normally, the CLT-371A centers images that are smaller in X and/or Y dimension than the selected HD-SDI format. If the CENTER_DISABLE switch is raised, centering is disabled and the image will be positioned at the top-left corner.
  • Page 15 When TEST_PATTERN is raised, the CLT-371A outputs the color bars test pattern shown below. The test pattern is convenient way to check the connection between CLT-371A and HD-SDI equipment. Test pattern format and frame rate are as specified by the FORMAT and FRAME_RATE switches.

  • Page 16: Sync_Shape

    Mode Switch 2 position 5 in selects the wave shape of the synchronization output signal. The CLT-371A generates a synchronizing signal that is aligned with the start of the HD-SDI video frames. This signal is available for use by the camera, frame grabbers, or other acquisition equipment in order to synchronize acquisition to the HD-SDI video output.
  • Page 17 2.3.15. SYNC_ON_CC1 Mode Switch 2 position 7 in enables synchronization output to the camera. When SYNC_ON_CC1 is raised, the synchronization signal specified by SYNC_PHASE and SYNC_INVERT is also sent to the camera via the CC1 camera control signal in the Camera Link interface. When SYNC_ON_CC1 is low, the CC1 signal is a static 0.

  • Page 18: Stand-Alone Application

    Stand-Alone Application A stand-alone application is shown in Figure 3-1. The CLT-371A mode switches are configured per camera characteristics and desired HD- SDI output. There is no ability to communicate with the camera in this setup, so the camera must power-up into the desired mode.

  • Page 19: Camera Control Application

    Camera Control Application An application with camera control software is shown in Figure 3-2. The CLT-371A mode switches are configured per camera characteristics and desired HD- SDI output. Camera control software running on the PC communicates with the camera via the CLT-371A RS-232 port.

  • Page 20: Video Splitter Application

    The splitter “slave” port connects to the CLT-371A. This illustrates a typical application where the CLT-371A / CLV-401A are added to an existing Camera Link system for HD-SDI monitoring, recording, etc.

  • Page 21: Sync_On_Cc1

    35 FPS is faster than the 29.97 FPS HD-SDI rate. While the CLT-371A incorporates automatic frame rate adaptation and it is not necessary for the frame rates to match, camera synchronization can be desirable and is included in this example.
  • Page 22 WHITE_BALANCE_WRITE_ENB is set to 0 at the end of this sequence to prevent accidental coefficient overwrite. Corrected vs uncorrected images may be compared by toggling the WHITE_BALANCE_ENABLE switch. The CLT-371A coefficients are non-volatile and will remain until overwritten via the above sequence.

  • Page 23: Specifications

    4. Specifications Table 4-1: CLT-371A Specifications Feature Specification Camera Link “base” configuration, 20-85 MHz, MDR female Camera Interface connector Monochrome area scan: - 8/10/12/14/16-bit single tap - 8/10/12-bit dual-tap Supported Camera Formats Color area scan: - 8-bit RGB - 8/10/12-bit Bayer (single or dual tap)

  • Page 24: Interface

    5.1. Front Panel Connections The CLT-371A Camera Link Translator front panel is shown in Figure 5-1. The front panel contains a 26-pin MDR video connector for connecting to the Camera Link camera, a standard 75-ohm BNC connector for connecting to an HD-SDI device, and a 3-pin circular connector for sync output and reset input.
  • Page 25 Figure 5-2: Sync/Reset Connector Pins...

  • Page 26: Rear Panel Connections

    5.2. Rear Panel Connections The CLT-371A Camera Link Translator rear panel is shown in Figure 5-3. The rear panel contains an RS-232 port, a 12-position (camera) mode switch, an 8-position (HD-SDI) mode switch, and the DC power jack. The DC power jack accepts either a standard 2.1 x 5.5 mm barrel-style power plug or a special locking plug.

  • Page 27: Dimensions

    Dimensions The CLT-371A Camera Link Translator cabinet dimensions are shown in Figure 6-1. The CLT-371A 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 for mounting.

  • Page 28: External Power Supply

    6.2. External Power Supply The CLT-371A is powered by 5 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. Power plug polarity is center-positive. The CLT-371A 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).

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