MC-780PIx CCD Camera User’s Guide SOCU006 July 1998 Printed on Recycled Paper
IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete.
Information About Cautions and Warnings Preface Read This First About This Manual This User’s Guide describes the characteristics and operation of the MC-780PIA and MC-780PIH CCD Video Camera Modules. How to Use This Manual Use this manual for technical data, operating characteristics, and general familiarization with the products before, during, and after installation. Information About Cautions and Warnings This book may contain cautions and warnings. This is an example of a caution statement.
If You Need Assistance If You Need Assistance . . . If you want to . . . Contact Texas Instruments at . . . Visit TI online World Wide Web: http://www.ti.com Receive general information or assistance World Wide Web: http://www.ti.com/sc/docs/pic/home.
Running Title—Attribute Reference Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Main Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1.1 High Image Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1.2 Mode Settings . . . . . . . . . . . . .
Contents 4.2 4.3 4.4 4.5 Random Shutter (Fixed V Sync) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Random Shutter (V Sync Reset) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI Mode Shutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Precautionary Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illustrations Figures 2–1 2–2 2–3 2–4 2–5 2–6 2–7 2–8 2–9 2–10 3–1 3–2 4–1 4–2 4–3 4–4 4–5 8–1 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 External Synchronization Terminal Resistance Switch SW4 . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Gain Mode Switch SW2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables Tables 2–1 2–2 2–3 2–4 2–5 2–6 2–7 2–8 2–9 2–10 2–11 2–12 4–1 5–1 7–1 7–2 7–3 viii Shutter Speed Control Switch SW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 External Synchronization Terminal Resistance Switch SW4 . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Mode Switches SW3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Shutter list . . . . . . . . . . . . . . .
Chapter 1 Overview This User’s Guide describes the operation and characteristics of the MC-780PIA and MC780PIH video cameras. This chapter gives an overview of the cameras and their features. Please read and keep this document as a reference. Topic Page 1.1 Main Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.6 Other Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Features 1.1 Main Features The MC-780PIA and MC-780PIH are black-and-white video cameras that use fixed-sensor charge-coupled devices (CCDs). The following paragraphs describe some of the main features of the cameras. 1.1.1 High Image Quality With 380,000 image-sensing elements, the CCDs reproduce very detailed images. 1.1.2 Mode Settings Several modes can be selected depending on the intended use.
Other Features 1.
1-4 Overview
Chapter 2 Nomenclature and Use of Each Component This chapter describes the location and use of components, connectors, and controls. Topic Page 2-1 Mounting System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2-2 Rear Panel Switches and Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 2-3 Internal Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting System 2.1 Mounting System The following paragraphs describe the mounting system for the camera modules. 2.1.1 Focus Ring C-Mount type lens and optical equipment are installed. If there is difficulty focusing with the lens, fine adjustments can be made by loosening the two screws located on the ring. The lens can also be brought back closer to the CCD by removing the focus ring. 2.1.2 Mounting Holes A There are four screw holes on the top and bottom for mounting the camera module.
Rear Panel Switches and Terminals 2.2 Rear Panel Switches and Terminals This paragraph explains the functions of the rear panel switches and terminals. Figure 2–1 shows their locations. Changing Switch Settings Always disconnect power when changing the switch settings. Figure 2–1. Rear Panel (SW1) (SW4) (DC IN) (SW3) (VR1) (SW2) (DC IN/ SYNC) (LENS) 2.2.1 Shutter Speed Control Switch SW1 Switch SW1 sets the electronic shutter speed. Table 2–1 shows the shutter speed settings. Table 2–1.
Rear Panel Switches and Terminals Table 2–2. External Synchronization Terminal Resistance Switch SW4 Switch Position Terminal Resistance Value Left 75 Ω Center 100 kΩ Right 150 Ω Figure 2–2. External Synchronization Terminal Resistance Switch SW4 Left Right Center Note: When outputting internal sync signal, set the switch to 100 kΩ. 2.2.3 Mode Switches SW3 The SW3 mode switches control the functions listed in Table 2–2 and Table 2–4. Table 2–3. Mode Switches SW3 Switch No.
Gain Variable Volume Control VR1 Table 2–5. Gain Mode Switch SW2 Switch No. Gain Mode Left AGC Center Fixed Right Variable Figure 2–3. Gain Mode Switch SW2 Left Right Center 2.2.5 Gain Variable Volume Control VR1 When variable gain is selected with gain mode switch SW2 in the right position, gain is increased by turning VR1 counterclockwise as shown in Figure 2–4. Figure 2–4. Gain Variable Volume Control VR1 UP 2.2.
DC IN/SYNC Terminal 2.2.8 The odd fields are low and the even fields are high for the pin 1 field index output. The pin 5 image signal is provided for auto-iris use so it cannot be connected to a monitor. The dc voltage output from pin 6 is the same as the input voltage. DC IN/SYNC Terminal This terminal supplies the +12 V power, outputs the image from the camera module, and inputs/outputs sync signals, through cable connector HR10A–10P–12S. Table 2–7 lists the terminal pins, signals, and levels.
Internal Switches 2.3 Internal Switches Remove the camera cover to set the internal switches. Viewing the camera from the front, the switches are located on boards in the center and the left. The center board is called the clock board, and the left board is called the process board. Figure 2–5 shows the switch locations. Figure 2–5. Internal Switches Clock board inside (HD/VD SW1) Clock board outside (S1) Processor board outside Lens (ϒ SW1) Connectors (SW2) (SW4) Bottom 2.3.
Internal Switches Table 2–9. Option Output Switch S1 Switch Position Output Signal Upper Shutter monitor output Lower Pixel clock output Figure 2–7. Option Output Switch S1 Upper Lower 2.3.3 Gamma Switch SW1 Gamma switch SW1 changes the gamma characteristics as listed in Table 2–10 and shown in Figure 2–8. Table 2–10.Gamma Switch SW1 Switch Position Gamma Characteristics Upper γ [gamma] = 1 (OFF) Center Not used Lower γ [gamma] = 0.45 (ON) Figure 2–8.
Internal Switches 2.3.5 Outline Emphasis Circuit ON/OFF Switch SW2 Switch SW2 controls the outline emphasis circuit on the MC-780PIH. Do not move this switch on the MC-780PIA. The outline emphasis circuit makes the image easier to see by emphasizing the image outline when the camera is used for surveillance. Table 2–12 lists the switch positions and functions, and Figure 2–10 shows the switch. Table 2–12.
2-10 Nomenclature and Use of Each Component
Chapter 3 Using the External SYNC Mode The camera can be synchronized externally by inputting an external sync signal. When using external sync, set the clock board’s sync signal input/output switch (SW1) to the external sync signal in (upper switch position) and switches 3 and 4 to the mode switch (SW3), located on the rear panel, to ON. Topic Page 3.1 External Sync With Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.2 External Sync With No Interface . . . . .
External Sync With Interlace 3.1 External Sync With Interlace On the rear panel, set switch 5 of mode switch SW3 to ON. 3.1.1 External Sync Signal Input Conditions - HD signals: 15.734 kHz ± 1% (63.5 µs ± 1%) VD signals: 262.5 H Phase In Figure 3–1, when the last VD transition is between 47.42 µs ahead and 16.13 µs behind relative to the last HD transition, it becomes the ODD field. When the last VD transition is between 16.13 µs ahead and 47.
External Sync With No Interlace 3.2 External Sync With No Interlace On the rear panel, set switch 5 of mode switch SW3 to OFF. 3.2.1 External Sync Signal Input Conditions - HD signals: 15.734 kHz ± 1% (63.5 µs ± 1%) VD signals: 244 ~ 1021 H, (see Notes 1, and 2) Phase Figure 3–2. External Sync With No Interlace 244~1021H HD 6H VD Notes: 1) The sync becomes internal sync if the VD does not come above 1022H.
3-4 Using the External SYNC Mode
Chapter 4 Using the Shutter Modes This chapter describes the various shutter modes and how to use them. Topic Page 4.1 Continuous Shutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 4.2 Random Shutter (Fixed V Sync) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 4.3 Random Shutter (V Sync Reset) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 4.4 VI Mode Shutter . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous Shutter 4.1 Continuous Shutter On the rear panel mode switch SW3, set switch 1 to ON and switch 2 to OFF. Use the shutter speed control switch SW1 to set the shutter speed. Figure 4–1 shows the continuous shutter speed control timing. Figure 4–1.
Random Shutter (Fixed V Sync) 4.2 Random Shutter (Fixed V Sync) On the rear panel mode switch SW3, set switch 1 to ON and switch 2 to OFF. Use the shutter speed control switch SW1 to set the shutter speed. The random shutter operates only when the shutter command has been added, so continuous shutter is the normal operating mode. Figure 4–2 shows the random shutter speed control timing with fixed V sync. Figure 4–2.
Random Shutter (V Sync Reset) 4.3 Random Shutter (V Sync Reset) On the rear panel mode switch SW3, set switch 1 to OFF and switch 2 to ON. Use the shutter speed control switch SW1 to set the shutter speed. Figure 4–3 shows the random shutter speed control timing with V sync reset. The random shutter operates only when the shutter command has been added, so continuous shutter is the normal operating mode. Figure 4–3.
VI Mode Shutter 4.4 VI Mode Shutter On the rear panel mode switch SW3, set switches 1 and 2 to ON. At this point there will be no image output. When an external VI command is input, exposure will occur for the period of the command. This mode is only for non-interlace. The image quality may be lower due to timed exposures; use accordingly. Figure 4–4 shows the VI mode shutter timing. Figure 4–4.
Precautionary Items 4.5 Precautionary Items Observe the following precautions when operating the electronic shutter. - The CCD for this camera uses the frame transfer method. At shutter speeds of 1/500, 1/1000, and 1/1500 second, the exposure period and the transfer period conflict with the readout period. There is black output from the line count, which conforms to the shutter speed; the image output follows.
Chapter 5 Initial Settings This chapter describes the modes of operation and the initial switch settings. Topic 5-1 Page Modes and Initial Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Modes and Initial Switch Settings 5.1 Modes and Initial Switch Settings With this unit it is possible to switch the operating modes to suit the intended use. All mode settings can be set with switches. Table 5–1 summarizes the modes and initial switch settings. Table 5–1.
Chapter 6 Precautions for Use Topic Page 6-1 Precautions for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 6-2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions for Use 6.1 Precautions for Use 6.1.1 Power Source The camera operates on +12 V. Use a stable ripple- and noise-free power source. 6.1.2 Heat Reduction To keep the temperature inside the camera from rising in some situations (such as when operating the camera inside a tightly sealed case) it may be necessary to use forced air conditioning. 6.1.3 Locations for Use and Storage Do not operate or store the camera in the following locations: - 6-2 Locations of extreme heat or cold.
Maintenance 6.2 Maintenance Use a blower to remove dirt or dust adhering to the CCD glass cover. Wiping the glass forcefully can damage the glass or create static electricity that can damage the CCD. Use a soft, dry cloth to clean dirt off the exterior. If it is extremely dirty, use a small amount of a neutral detergent on a cloth to remove it, and then wipe with a dry cloth. Do not use alcohol or benzene, as they may discolor the surface and cause peeling.
6-4 Precautions for Use
Chapter 7 Specifications This chapter lists the specifications for the cameras. Topic Page 7-1 Image System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 7-2 Optical Elements and Other Specifications . . . . . . . . . . . . . . . . . . . . . .
Image System 7.1 Image System Table 7–1 lists the image system specifications for the MC–780PIA; Table 7–2 lists specifications for the MC–780PIH. Table 7–1. MC–780PIA Image System Specifications Item Specification Imager Frame Transfer Method CCD (TI manufactured CCD TC241-30) Effective Pixel Count 754 × 484 (horizontal/vertical) Sensor Screen Area 2/3 inch format (screen size 8.8 mm × 6.6 mm) Signal System Based on EIA–170A system Table 7–2.
Optical Elements and Other Specifications 7.2 Optical Elements and Other Specifications Table 7–3 lists other specifications common to the two cameras. Table 7–3. Optical Elements and Other Specifications Item Specification Lens Mount C-mount Flange back 17.526 mm (can be fine adjusted) Synchronization System Internal/External Sync Input/Output HD/VD (signal level:TTL level) Jitter Within ±60 nsec Scanning Method 2:1 interlace/non-interlace Image Output 1.
7-4 Specifications
Chapter 8 Exterior Dimensions This chapter lists exterior dimensions. Topic 8-1 Page Exterior Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exterior Dimensions 8.1 Exterior Dimensions Figure 8–1 shows the exterior dimensions for the camera. The following notes apply: 1) unit:mm 2) Since the focus ring is adjustable, this is the middle value (1.2 mm). 3) The TI logo for the camera cover is a sticker with one adhesive side. 4) The shape and designation may change due to improvements.
48 27 10 22 ÏÏÏÏÏÏ ÏÏÏÏÏÏ 22 15 4–M2.6–4.5 LENS VIDEO OUT ÎÎ 79 TOP DC 12 V 500 mA Optical Center BACK DC IN/ SYNC 22 15 40 8 10 ÏÏÏÏÏÏÏ ÏÏÏÏÏÏÏ 15 44 FRONT ÏÏÏÏÏÏ ÏÏÏÏÏÏ 15 23 14 14 4–M2.6–4.5 2–M4–5 U1/4–2OUNC–6 79 BOTTOM 93 112 SIDE 13 Exterior Dimensions Figure 8–1.
8-4 Exterior Dimensions
Chapter 9 Other Issues This chapter discusses cable and connector issues. Topic 9-1 Page Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connectors 9.1 Connectors We do not sell cable connectors. They can be obtained from appropriate departments of Hirose Electrical Co.
IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete.
