0413 TRZ Camera

Enhanced high resolution mono CCD
Water corrected optics
No Pan-and-Tilt Unit required
Titanium housing for resistance to corrosion
Output options to suit different hull-penetrator configurations

The TRZ (Tilt, Rotate, Zoom) underwater camera is a low-light monochrome camera suited to submarine, manned submersible or large ROV applications where low ambient light levels require extra sensitivity.

The TRZ Camera has been designed for low-light submarine based applications such as machinery space monitoring and equipment deployment where space is at a premium.

The camera is based upon a modified enhanced monochrome CCD camera, fitted with a 6:1 zoom lens and mounted on a tilt and rotate mechanism. The lens incorporates a custom designed optical corrector optimised for operation in seawater. The camera housing features an acrylic hemispherical dome fastened to a titanium alloy body, with a purge plug on the base that permits purging with dry nitrogen prior to operation. The camera's rotating mechanism allows it to continuously rotate through 360 degrees in either direction. The tilt mechanism allows the camera to tilt from +90 degrees elevation to +5 degrees (5 degrees above horizontal) assuming the camera orientation is such that the dome port is pointing upward. Hall Effect switches mounted on one side support and magnets mounted on the tilt mechanism serve as limit switches, which prevent mechanical over-travel.

The camera optionally incorporates additional internal hardware to provide a graphic indication of the angular tilt and rotate position of the lens assembly to the user. This will be displayed as on-screen text. The camera back-end and housing include an orientation reference mark to indicate zero degrees for angular rotate.

Standard Technical Features

Electrical:

Horizontal Resolution	570 TVL/PH (minimum)
Light (Scene, at 2856K, no IR filter)	2.4 x 10-2 lux (scene)(50% video) 5.4 x 10-2 lux (scene)(full video) with 10 shades of discernable grey scale Simulated daylight (full video) with 10 shades of discernable grey scale
Sensor Type	" format interline transfer CCD
S/N Ratio	46dB
Scan Standard	525 Lines 59.54Hz (EIA RS170A)
Active Picture Elements	768 (H) x 492 (V)
Power Input	+16 to +24Vdc, 700mA(typ)(PROVISIONAL) 1A (maximum)
Video Output	1.0V Pk - Pk (nominal)composite video into 75 Ohms
Gamma Correction	0.45 (typical)
Focus Control	Single wire tri-state control High (8 to 24Vdc) = focus near Low (-24V to 4Vdc) = focus far
Zoom Control	Single wire tri-state control High (8 to 24Vdc) = telephoto Low (-24V to 4Vdc) = wide
Tilt Control	Single wire tri-state control High (8 to 24Vdc) = tilt down Low (-24V to 4Vdc) = tilt up (Tilt and rotate polarity is defined for the camera installed with the dome pointing downwards)
Rotate Control	Single wire tri-state control High (8 to 24Vdc) = rotate (pan) left Low (-24V to 4Vdc) = rotate (pan) right
Protection	Reverse voltage protection on power input
Electrical Isolation	All camera electrical connectors and leads isolated from the pressure housing by a minimum of 10 meg-ohms with 500Vdc applied

Optical:

Lens	8-48mm f/1.0 zoom lens
Field of View (in water)	Wide: 33° (H) x 25° (V) Telephoto: 5.7° (H) x 4.3° (V)
Focus Range (in water)	Wide: 1.0m to infinity Telephoto: 1.6m to infinity
Tilt Range	-5° to -90° elevation (as installed on the vehicle, -5° ref - the lens is aimed 5 degrees less than parallel to the ocean floor, -90° ref - the lens is aimed down at the ocean floor)
Rotate Range	Unlimited 360° continuous rotation
Port	hemispherical acrylic dome port with internal correction lens optimised for operation in seawater
Iris Control	Automatic (galvo)

Video Overlay:

Video Overlay Format	The Tilt and Rotate overlays shall be alphanumeric characters. The size of the characters shall be approx. 0.25" on a 9" diagonal monochrome RS170A monitor and the characters shall be white lettering
Accuracy of Display	The accuracy of the displayed lens position shall be +/- 2 degrees
Rotate Display Format	Shall be displayed as RXXX, where XXX is the rotate angle in degrees (from 0 to 359 degrees) in a clockwise direction (as viewed from above, with the dome facing downwards) relative to a zero reference mark engraved on the housing. If the text controller detects an invalid reading, 'RXXX' shall be displayed
Position of Rotate Display	In the lower left corner of the video image starting approx 0.5" from the left side of the image and 0.5" up from the image as viewed on a 9" diagonal monochrome RS170A monitor
Tilt Display Format	Shall be superimposed as TX, where XX is the downward tilt angle in degrees (from 5 to 90 degrees) with the dome facing downwards. I.e. Tilt Down operation causes the displayed tilt angle to increase, hence 'T90' indicates that the lens is pointing directly downwards towards the ocean floor. If the text controller detects an invalid reading, 'TXX' shall be displayed
Position of Tilt Display	In the lower left corner of the video image ending approx 0.5" from the right side of the image and 0.5" up from the image as viewed on a 9" diagonal monochrome RS170A monitor

Physical:

Dimensions (nominal)
Diameter	238.8mm (back end) 226.22mm (middle section of housing) 253.23mm (port retaining ring) 228.6mm (dome port)
Length	301.11mm (excl. connector)
Weight	23.1 Kg (in air) 11.1 Kg (in water)
Housing Material	6AL/4V ASTM B 348-95a Titanium Alloy
Connector	Impulse MKS(W)-508-FCR
Pin Connections	Pin 1: Video Output Pin 2: Video Return Pin 3: Power Return (0V) Pin 4: camera Power (+16 to 24VDC) Pin 5: Focus Control (tri-state) Pin 6: Zoom Control (tri-state) Pin 7: Rotate Control (tri-state) Pin 8: Tilt Control (tri-state) Pins 9 to 12: N/C
Finish	Natural

Environmental:

Depth Rating	Operating: 3100 feet in seawater Survival: 4620 feet in seawater
Temperature	-5 to +40°C (operating) -20 to +60°C (storage)