TMC-7 / TMC-6 HIGH RESOLUTION CCD COLOR CAMERA OPERATIONS MANUAL REV.
TABLE OF CONTENTS 1. OPERATION Outline Special Characteristics of a CCD 1 1 1 2. SPECIFICATIONS 2 3. THEORY OF OPERATION Operation Principles of the CCD Mechanism of the CCD Electrical Charge Transmission Interline-Transfer Organization of the CCD Image Sensors Instructions for Powering TMC-7/TMC-6 2 2 3 4 4 4. ALIGNMENT AND ADJUSTMENT Equipment Preparation Adjustment Procedures 6 6 7 7 5. RGB OPERATION (OPTIONAL) CCA-7 RGB "Breakout" Module 9 9 6.
SECTION 1: OPERATION Patterned noise on the picture at high temperature 1.1 OUTLINE Dark current (thermal noise) is inherent in semiconductors. At room temperature, the amount of dark current in all photosensors is very close. However, as the temperature rises, the amount of dark current increases. As a result, the relative difference between the dark current of each photosensor increases. This difference also causes the patterned noise on the picture.
SECTION 2: COMPREHENSIVE SPECIFICATIONS Model TMC-7 (NTSC) Imager Pixel Cell size Color filter Scanning 1/2" interline transfer CCD (6.4 x 4.8 mm) 768(H) x 494(V) 752(H) x 582(V) 8.4µm(H) x 9.8µm(V) 8.6µm(H) x 8.3µm(V) Cy, Ye, Mg, G complementary color filter 2:1 interlaced, field mode scanning 525 lines, 59.94 Hz 625 lines, 50 Hz Internal sync only fH = 15.734 KHz fH = 15.625 KHz fV = 59.94 Hz fV = 50.00 Hz 460(H) x 400(V) TV lines 450(H) x 450(V) TV lines 50 dB (AGC off ) 2 Lux F = 1.
3.2 MECHANISM OF THE CCD ELECTRICAL CHARGE TRANSMISSION The TMC-7 uses a 4-phase drive method CCD. For simplicity, a 2-phase drive method CCD is explained below. ø2 ø1 N- N N- Figure 1 shows an example of the changes which can occur in potential wells in successive time intervals. N NP - sub N N- N potential profile t1 At t1, the electrode voltages are fH1>fH2, so the potential wells are deeper toward the electrode at the higher voltage fH1. An electrical charge accumulates in these deep wells.
3.3 THE INTERLINE-TRANSFER ORGANIZATION OF THE CCD IMAGE SENSORS The TMC-7 CCD video camera module adopts an interline-transfer organization in which the precisely aligned photosensor and vertical transmission section are arrayed interlinearly. Optional output Each pin has to be designated for various options such as Y/C output, integration control, etc. The customer will be required to assign option numbers. A horizontal shift register links up with the vertical transmission section.
12P Series cables available: 3.4.4 AUTO IRIS CONNECTOR 12P-02 2 meters 12P-05 5 meters 12P-10 10 meters 12P-15 15 meters 12P-25 25 meters 12P-X Custom length 12P-02 8-conductor cable for RGB 12P-02MF RGB separator cable (for use with CCA-7 Signal Separator only) The TMC-7 has a 6-pin auto iris connector located on the back of the camera. A mating 6-pin connector (PC6P) may be obtained from PULNIX.
SECTION 4 : ALIGNMENT AND ADJUSTMENT 4.1 EQUIPMENT 1. Light source for test chart. Pattern Box PTB-500 (90-130V) PTB-220 (190-240V--not used in U.S.) 2. For video level and gamma adjustment. Grayscale Chart White Window Chart YL 3. For color adjustment. (Use color bar chart) CY G W MG R B Color Bar Chart 4. For signal adjustment. Vector scope Waveform monitor Oscilloscope 5.
Driver Board VR2 AGC = 2.0 V VR1 AGC MAX = 3.0 V 4.2 PREPARATION 4.2.1 MECHANICAL BACK FOCUS ADJUSTMENT AGC Subject: Resolution chart VR2 AGC MAX VR1 1. Mount the manual lens (i.e. Cosmicar 25mm, F=1.4). 2. Open the lens iris completely and set lens focal length to minimum for the lens used (e.g. 2 ft.).
R gain, B gain Adjust VR10 and VR11 so that the white spot on Vector scope is in the center. C1 gain Adjust VR12 so that each color dot on the Vector scope combines into one spot. 4.3.4 Y LEVEL, SETUP LEVEL Use Waveform monitor. Observe the waveform and adjust VR8 to set the white level to 95 IRE. Put lens cap on and adjust VR9 so that setup (Pedestal level) is 5 IRE. WEN SMD2 SMD1 SW MODE 100 80 Driver board input/output 10° 60 40 4.3.6 AUTO WHITE BALANCE Make sure lens is closed.
Speed control SECTION 6: IMAGER COLOR FILTERS 0 1 2 3 4 5 6 7 D0 L H L H L H L H D1 L L H H L L H H D2 L L L L H H H H 6.1 DIAGRAM OF COMPLEMENTARY STRIPE FILTER COMPLEMENTARY MOSAIC FILTER 1/60 1/125 1/250 1/500 Integration (option) 2FLD 4FLD 6FLD 8FLD 1/1000 1/2000 1/4000 1/10000 10FLD 12FLD 14FLD 16FLD OUTPUT Continuous shutter By applying a negative going TTL pulse to pin #8 TRIG input, the TMC-7 can operate with continuous shutter speed change.
SECTION 7: TIMING CHART FOR TMC-7/TMC-6 HD 6.7µSec 818 768 CCE photo sensors allocation Optical black period H register stop period 69.8nSec Image sensing period Dummy H register Optical black period CCD output signal Effective picture period 154 H BLK 10.7µSec Composite video output 22 1.54µSec 68 H SYNC 4.75µSec 64 4.47µSec 910 63.56µSec (1 horizontal line) 10 756 52.
SECTION 8: MECHANICAL DRAWINGS 8.1 STANDARD & REMOTE CONFIGURATIONS 146 133 42 PULNiX 32 25 25 M2 (2x) 1/4 - 20 UNC -2B M2.6 x 7mm.
Notice The material contained in this manual consists of information that is proprietary to Pulnix America, Inc., and may only be used by the purchasers of this product. Pulnix America, Inc. makes no warranty for the use of its products and assumes no responsibility for any errors which may appear or for damages resulting from the use of the information contained herein. Pulnix America, Inc. reserves the right to make changes without notice.
