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Hitachi VK-S655N/EN

Quick Overview

Analog SD Block Camera Module

The Hitachi VK-S655N/S655EN is a RoHS-Compliant compact chassis-type camera designed for surveillance of various sites under a wide range of light conditions. Even high-contrast scenes can be captured without glare or loss of detail thanks to the Wide Dynamic Range design.


  • Compact 36x Optical Zoom Lens
  • Progressive Recording Direct to HDD
  • Electronic Image Stabilizer
  • Wide Dynamic Range (WDR)


  • Surveillance - In corporate, medical, learning institutes and other public places, security camera solutions offer peace of mind.
  • Traffic Management - Monitoring and responding to ongoing road activity in residential and business areas.
  • Telepresence - Conference type solutions in business or learning institutions.
  • Low Vision Magnifier - Video technology for sight impaired individuals.


  • Compact 36x Optical Zoom Lens
  • Progressive Recording Direct to HDD
  • Electronic Image Stabilizer
  • Wide Dynamic Range (WDR)
Specifications VK-S655N (NTSC) / VK-S655EN (PAL)
Optical Zoom 36X
Digital Zoom 12x
Focus Auto/Manual

Practical F-value

f=3.3 ~ 119mm
F-value F1.4
Practical H angle 60.2 deg ~ 1.8 deg
Image Sensor 1/4" CCD Progressive Scan / Ex-View - NTSC
1/4" CCD Progressive Scan / Ex-View - PAL
Effective Pixels 768 x 494 (380k) - NTSC
752 x 582 (440k) - PAL
Output Pixels / Frame Rate 752 x 480i/ 59.94fps (VK-S655N)
736 x 576i/ 50fps (VK-S655EN)
Horizontal Resolution

540 TVL (typical) 520 TVL (minimum)

Luminance S/N ratio 50dB+
Video Output - Analog Composit Video, Y/C Video
Video Output - Digital 8-bit YUV Parallel (REC656) format
Frame Putput mode Yes
Sync System Internal / External (AC Line Lock)
Defog ---
Enhanced Intensity ---
EIS (Electronic Image Stabilization) Yes
Min. Sensitivity 1.0 lx
Communication Protocol EAP/AFP
IR Cut Filter Removable Yes
Wide Dynamic Range Dual Shutter-speed method
FNR (Frame Noise Reduction) Auto/Manual
Motion Detection 64 zones
Motion Tracking Detected Motion Vector Available
Image Reverse (H & V Invert) Yes
Image Mirror (H Invert) Yes
Image Vertical Invert Yes
Image Freeze Yes
Dynamic White Spot Compensation Yes (automatic)
Electrical Shutter Yes (Auto/Manual)
Backlight Compensation Yes
AGC up to 30dB
Digital Slow Shutter up to 1 sec (VK-S655N)
up to 1/0.75(VK-S655EN)
White Balance Auto/Manual
Slow Auto Exposure Mode x1 ~ x254
Pricacy Masking 2D mode: 2 zone / 3D mode: 8 zone / Fixed Masking: 288 zone
Communication Method & Speed TTL RS-232 4800 ~ 57600 bps
Internal Preset Store (max) 111
Operating Temperature -10 deg C ~ +60 deg C
Operating Humidity 10% ` 90%
Storage Temperature -20 deg C ~ +60 deg C
Storage Humidity 0% ~ 95%
Supplied Voltage DC9V ~ 12V +_ 0.5V
Power Consumption - active 3.4W (DC9V)
Power Consumption - inactive 2.6W (DC9V)
Dimessions W50 x H60 X D89.5 (mm)
Weight 250 g


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Hitachi VK-S655N/EN
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