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Phone: 410 315-9727
Copyright 2008 SmarTek Systems, Inc. Reserved
SVS-1 NTSC Cameras
Sensing and Systems Integration Solutions
SmarTek Systems provide integrated cameras, lenses, and enclosures for the SVS-1 system. The camera enclosure are Pelco EH2500 Series and are rain and dustproof to protect CCTV cameras from adverse environmental conditions. Constructed from aluminum, the enclosures are compact and lightweight. The EH2500 Series can accommodate a variety of cameras with fixed focal length or motorized zoom lenses. The enclosures have an outside diameter of 4.25 inches (10.80 cm) and are 15 inches (38.10 cm) long. Optional accessories include a sun shroud. The heater has two elements so that it can operate as a heater and defroster. When the temperature drops below 70°F (21°C), one element turns on for defogging. When the temperature falls below 40°F (4°C), the second element turns on for defrosting. Cable entry is through two adjustable cable glands located conveniently on the rear plate.
Features and Specifications
- Resolution 570 lines (horizontal)
- Synchronization Internal or Linelock (manual switch)
- Image Sensor 1/3" CCD Interline
- Effective Elements 768 (H) x 492 (V) pixels
- Image Output 1.0V p-p/75 ohms
- S/N Ratio more than 50dB
- Min Illumination 0.18 lux at f1.2/50IRE | 0.08 lux at f0.8/50IRE
- Gamma Characteristics 0.45
- Backlight Compensation On / Off with highlight slicing
- Lens Mount CS-Mount
- Video Iris control: Power/12VDC, less than 50mA
- Video signal 0.7Vp-p (high impedance)
- DC Iris: shutter speed 1/60 sec fixed
- Auto Electronic Shutter at 1/60 - 100,000 sec linear shutter
- Linelock phase adjustment; DC iris level adjustment
- Power Supply AC24V or DC12V
- Power Consumption Less than 3W
- Operating Temperature -10° to + 50°C
- Ambient Humidity RH80% max (keep free from dampness)
EH2500 Housing
- Designed for Maximum Rain Protection
- Dustproof • Aluminum Construction • Compact, Lightweight
- Meets NEMA Type 4 and IP66 Standards
- Accepts Cameras with Fixed Lens or Motorized Zoom Lenses
- Sun Shroud and Dual-Element Heater/Defroster
- Dimensions 13.25" L x 2.75" W x 2.75" H (33.66 x 6.99 x 6.99 cm)
- Input Voltage 120, 24, or 230 VAC for heater/Defroster
- Connector 4-position terminal block
- Heater 120 VAC, 24 VAC, 230 VAC; 43 W maximum.
- Dual-element heater is thermostatically controlled.
- Defroster; activates on at 70°F (21°C), off at 85°F (29°C)
- Heater; activates on at 40°F (4°C), off at 67°F (19°C)

- Motorized Zoom, Video Auto-Iris Compatible with 1/3” Cameras
- Focal Length: 6.5~39mm
- Max. Relative Aperture: 1:1.0
- Iris: F1.0~Approx. 1200
- Zoom Ratio: 6X
- Angular Field of View: 1/3”: 40.5° × 31.0° at 39mm
- Input: High Impedance
- Sensitivity Adjustment: Image Signal Level 0.5~1.0Vp-p
- Auto-Iris Accuracy: With Input Video Signal 0.7Vp-p
- Within ±15% of Mean value
- Operation: Zoom: Motorized (DC±4V~12V, Max 40mA)
- Focus: Motorized (DC±4V~12V, Max 40mA)
- Operation Temperature: -10 ~ +50°C (+14 ~ 122° F)
- Mount: CS-mount