Q1: What’s the Warranty?
 A :  We confirm all of our cameras are with 1 year Warranty Guarantee. In case of any defective within 1 year, we will follow either one of following 2 choices:

1) For less technical problem, like defective IR led board / broken glass. We would like your company to show us proof of defective, then we will send new parts for your replacement with next order.

2) For more technical problem, we will replace new units for you. when you send back defective units, freight in your company’s account. when we receive, we will send back new units to your company, freight in our company’s account.

 Q2: What's your repair policy?
 A : All defective products that are within warranty are eligible for return for repair. You must call one of our representatives and have them issue an RMA number (return manufacturers authorization). All items being shipped back must be packaged correctly for them not to be damaged in shipping. We are not responsible for what happens to items during shipping and will not cover any damages due to shipping. We are also not responsible for any lost items in shipping. All items must have the RMA number written on the box to be accepted. We will do our best to get your repair or replacement sent to you as soon as possible. In most cases, products are repaired and shipped within 2 business days. Repair time is dependant on shipping time and whether the item is in stock. All DVR repairs are performed by professional technicians with 1000's of hours of bench experience. All DVR's sent in for repair are tested for 24 hours before being sent back out.

 Q3: What's the return policy for freight?
 A : Regarding freight for defective cameras, we are supporting our customers like this: when we confirm, customers disassemble cameras to just get the ccd board / lens & IR led boards inside, send these parts back to us  by normal post freight at your account (small parcel to our shenzhen factory directly, bigger parcel to HK forwarder first then BORSCHE will be responsible to get from there because of custom reason),  upon receipt these accessories, we will send back COMPLETED NEW cameras to you with next order, freight at our account. to disassemble camera is to save the freight cost of both sides.

 Q4: What shipping method do you use?
 A: DHL,EMS,UPS,Fedex,Air.

 Q5: How long does it take to get my order after I place it?
 A : It will take about 3-7 work days.
 

  Application

 Q1: How do I choose the correct camera for my application?
 A: This in general is a comparatively difficult decision. Many aspects of the installation must be taken into consideration in order to obtain the correct performance that meets your requirements.
    A high resolution camera should be considered where greater detail of scene is required. E.g. Colour 460 TVL, Monochrome 570 TVL. Choosing a more sensitive camera will improve reproduction in poorly lit areas. The sensitivity of a camera is indicated by the minimum amount of light in order for the camera to produce a usable picture. e.g. Colour 1.0 Lux at F1.2.
    A conventional camera produces a pale backdrop when an object is shot against a bright background. BLC (Back Light Compensation) will counter strong light sources retaining picture quality.
    Concentrated light sources directed towards the camera (e.g. car head lamps) can be inverted by an optional peak white inverter or an eclipser function. This has the effect of bringing detail to areas and making an object clear, that would otherwise be shadowed.
 

  Security Camera

   Q1:How to recognize 3142?
   A :  1、Below is real 3142：
    

   2、Below is fake 3142：
      

   Q2: How to identify the authenticity of the camera?
   A : 
  
  Start with CCD looks: If you open the bolt dust cover, see CCD surface, See? 
  1.Up and down two rows of contacts, the middle of a big front teeth missing, this is SONY CCD characteristics (left), Side of the missing front teeth while not missing front teeth,What does CCD   Sony 1 / 4 "CCD (no map) 
  2.No missing front teeth, SHARP CCD (left graph) 
  3.No missing front teeth, like, but thicker lines, which is Panasonic CCD (third from left diagram) 
  4.A1 CCD (fourth from left diagram) 
 DSP: 
 SONY has SS-1 (2163), SS-11 (3141 / 2), SS-11X (4103), SS-HQ1, SS-2,  
 Sharp has D4 (38603), D5 out soon
 Matsushita to D5 based
 There Hitachi (a Taiwanese manufacturers use),
 South Korea NEXTCHIP, 
 Taiwan's A-NOVA 
 Simple plan 
 3142 +405 Pu solution (the so-called 420 lines) 
 2163 +405 Pu solution (some manufacturers sell as high resolution 480 line standard, industry standard solutions of known high false 460 lines) 
 2163 +409 high resolution (the so-called 480 lines) 
 2163 +255 (lower photo) 
 3172 +409  3172 +255  4103 +405  4103 +409  and so on.

   Q3: What is Closed Circuit Television (CCTV)?
   A : CCTV or Closed Circuit Television refers to a visible or covert video system intended for only a limited number of viewers. In Closed Circuit TV (CCTV), the picture is viewed or recorded, but not broadcast. It was initially developed as a means of security for banks and casinos; however, today it has been developed to the point where it is simple and inexpensive enough to be used with Home Security Systems, and for everyday surveillance.
More specifically, CCTV is a television transmission system in which live or prerecorded signals are sent over a closed loop to a finite and predetermined group of receivers, usually as scrambled radio waves that are unscrambled at the point of reception. CCTV takes numerous forms and performs a wide range of functions ranging from image enhancement for the partially sighted to the transmission of pay-per-view broadcasts. Although cable television is technically a form of Closed Circuit TV, the term is generally used to describe systems with more specialized applications than a standard broadcast or cable television. Such specialized systems are not subject to regulation by the Federal Communications Commission (FCC); however, Security Cameras using scrambled radio waves are in fact subject to common carrier tariffs and FCC conditions of service.

   Q4: What is "Lux" for cameras?
   A : LUX is defined as "Relative amount of light that will produce a viewable image." Cameras actually work in the opposite of the ratings of LUX. LUX is actually amount of light created where cameras are capturing light.

   Below is a general reference of amount of light created in LUX ratings.

   A few lux ratings for reference;
   The sun - 100,000, 
   Sun with light cloud - 70,000,
   Sun with heavy cloud - 20,000,
   Home/office lighting - 100-1000,
   Sunrise/sunset - 500,
   Street Lighting - 1-10,
   60 Wt. Bulb 10 ft. away - 10
   Twilight - 4,
   Full moon - 0.2,
   Quarter moon - 0.02, 
   Overcast moon - 0.007,
   Clear night sky - 0.001,
   Average starlight - 0.0007,
   Overcast night sky - 0.00005

   Q5: What is BLC "Back Light Compensation"?
   A : Many cameras included a BLC circuit. This circuit is used to help correct an image with more light behind the subject being viewed. Without backlight compensation, the subject appears dark with little detail. Using backlight compensation will reduce the brightness of the light to allow the subject to appear brighter and bring out the details.

   Q6: What is Automatica Gain Control?
   A : Most cameras come with an AGC circuit. This circuit examines brightness level of the video signal to keep it at a consistent level. For example, if the video signal is dark, it will attempt to increase the gain to bring the brightness up to a normal level.
 

  Digital Video Record----DVR

    Q1: What is H.264 compression?
    A : H.264 is a new video compression scheme that is becoming the worldwide digital video standard for consumer electronics and personal computers. In particular, H.264 has already been selected as a key compression scheme (codec) for the next generation of optical disc formats, HD-DVD and Blu-ray disc (sometimes referred to as BD or BD-ROM) H.264 has been adopted by the Motion Picture Experts Group (MPEG) to be a key video compression scheme in the MPEG-4 format for digital media exchange. H.264 is sometimes referred to as “MPEG-4 Part 10â (part of the MPEG-4 specification), or as “AVCâ (MPEG-4’s Advanced Video Coding). This new compression scheme has been developed in response to technical factors and the needs of an evolving market:
   1.MPEG-2 and other older video codecs are relatively inefficient.
   2.Much greater computational resources are available today.
   3.High Definition video is becoming pervasive, and there is a strong need to storeand transmit more efficiently the higher quantity of data of HD (about 6 times more than Standard Definition video).

   Q2: What is MJPEG Motion JPEG Video Codec?
Bitstream encoding for video in which each frame [or field?] is compressed using the JPEG still-image compression algorithm. Taken as a sequence, the series of frames represent the source video. MJPEG bitstreams are often wrapped in AVI files where they carry the Four-Character Code.

   Q3: What is Bit Rate?
   A : The amount of compressed video data delivered into the decoding system. The higher the bit-rate, the higher the quality and/or the resolution of the video. For optical disc formats, this is usually measured in megabits per second (Mbps).

   Q4: What would the bandwidth be for different Video Media?
   A : HDV Video (high resolution video recorded on mini DV tape as MPEG-2)
   HDV-1 at 720p: 19 MBit/s
   HDV-2 at 1080i: 25 MBit/s

   Computer Graphics SXGA (1280 x 1024 @ 60Hz):
   pixel clock of 108 MHz, color depth 24 bit => 2.6 Gbps 

   High Quality Video (not compressed): 
   Digital Data = 30 frames per second / 640 x 480 pixels / 24-bit color / pixel => 221 Mbps 

   Reduced Quality Video (not compressed):
   Digital Data = 15 frames per second / 320 x 240 pixels / 16-bit color / pixel => 18 Mbps 

   Reduced Quality Video (16bit color), 16 frames per second, 320 x 240 pixel x 16 bits x 16 frames = 19,660,800 bits per second => 19.7 Mbps 

   Videoconferencing: 64 kbps to 3 Mbps
   Corporate Video: 2 Mbps to 3 Mbps
   MPEG-1 Video: 1 to 3 Mbps

   MPEG-2 Video: 
   - Compression 35 : 1 - 16 : 1 (Quality for Presentation Purpose) 5 - 10 Mbps
   - Compression 16 : 1 - 7 : 1 (Betacam SP Replacement) 10 - 25 Mbps
   - Compression 7 : 1 - 2 : 1 (Spectacular Imaging) 25 - 90 Mbps
   - Compression 40 : 1 - 16 : 1 (DVD) 3.5 - 10 Mbps

   CD Quality Audio: 
   44,1 kHz sample rate / 16-bit samples / 2 audio channels = 1.4 Mbps 

   Low Quality Audio: 
   11,05 kHz sample rate / 8-bit samples / 1 audio channel = 0.1 Mbps 
   MPEG-1 Audio, Layer 3 (MP3), "near CD-quality": 96 to 256 kbps 

   Computer Data: 
   10BaseT Ethernet: 10 Mbps
   100BaseT Ethernet: 100 Mbps
   1Gigabit Rthernet: 1 Gbps

   FireWire: 400 Mbps
   FireWire (new): 800 Mbps

   USB (1.1): 12 Mbps
   USB (2.0): 480 Mbps

   Fibre Channel FC: 1 Gbps .. 4 Gbps
   Fibre Channel (new developments coming up): 40 Gbps

   Computer PCI Bus: 132 Mbps
   14.4 modem: 1.44 kbyte/sec
   28.8 modem: 2.88 kbyte/sec
   ISDN: 6.4 kbyte/sec to 15.44 kbyte/sec (std MPEG1)
   ATM: 45 to 155 Mbps

   (Mbps = Megabits per second)
   Mbps stands for millions of bits per second and is a measure of bandwidth. It represents the total information flow over a given time on a communications medium.

   A megabit is a million binary pulses or "bits".

   Sometimes 1 Mbps is defined as 1,048,576 bits. But bits in data communications have historically been counted using the decimal number system. This would mean, 1 Mbps is 1.000.000 bits per second, and 28.8 kilobits is 28,800 bits per second.

   Bandwidth (the width of a band of electromagnetic frequencies) is used to mean how fast data flows on a given transmission path, and the width of the range of frequencies that an electronic signal occupies on a given transmission medium. In digital systems, bandwidth is expressed as data speed in bits per second.

  Power supply

   Q1: What is the maximum distance I can run 12vdc when powering a camera?
   A : This is a commonly asked question and there is no simple answer. Some manufacturers may recommend that their cameras can be run over (X) distance with (Y) cable. This however should still be considered as a general guide. Cable conductor size and installation route must also be taken into consideration. If you are unsure, we would recommend that you contact Technical Support for guidance.

  CCTV Cable

   Q1: How to connect BNC Crimp-ON to Coaxial Cable?
   A : Installation of the 2 Piece BNC Crimp type connector
  A crimp type connection allows for quick and simple installation while still maintaining a mechanical and electrical connection fairly close to a solder type termination. Some of the key points to remember are as follows: Make sure to use the proper size connector for the type of cable you are using. Make sure all cuts and stripping is clean. Avoid nicks as much as possible. Use the proper crimp tool, don't try to improvise with pliers, etc.
   Follow these steps below:
 

   Q2:How to connect BNC Twist-ON to coaxial cable?
   A : Each end of your cabling must be stripped back. Measurements of the stripped coax wire (above) can vary without any problems. However, do not allow the ?outer stranded wire? to touch (contact) the center copper wire. Inserting your stripped coax cabling into your BNC connector: If you look inside of the BNC connector, you?ll see an inner sleeve (small hole) at the end of it. When inserting your coax cable into your BNC connector, make sure that the center copper wire slips into the end of this inner sleeve in the BNC. 

Cable Type*	Maximum Distance
RG59/U	750 ft (229 m)
RG6/U	1,000 ft (305 m)
RG11/U	1,500 ft (457 m)
* Minimum cable requirements:
75 ohms impedance
All-copper center conductor
All-copper braided shield with 95% braid coverage

   Q4: Whats the Wiring Distance for power using Cat5e or Cat6? 
   A :

Power Supply Voltage	24V AC	28V AC	12V DC
Resultant Camera Voltage	21V AC	21V AC	11.5 V AC
100 mA B&W Camera
Cat 5 (24 AWG)	300m (1,000ft)	762m (2,500ft)	53m (175ft)
Cat 6 (22 AWG)	457m (1,500ft)	1,219m (4,000ft)	91m (300ft)
300 mA Color Camera
Cat 5 (24 AWG)	107m (350ft)	259m (850ft)	16m (50ft)
Cat 6 (22 AWG)	183m (600ft)	427m (1,400ft)	31m (100ft)
1 Amp P/T/Z Camera
Cat 5 (24 AWG)	31m (100ft)	76m (76.2m)	4.6m (15ft)
Cat 6 (22 AWG)	46m (150ft)	122m (400ft)	91m (300ft)

   Q5: Why use baluns with twisted pair rather than coaxial cable?
   A : Twisted pair cable is one method for video transmission. It is common used in computer network. This type of cable provides balanced signal transmission (co-axial cable is unbalanced). As two wires inside the cable twisted together, they are even exposed to any sources of electrical or magnetic interference present. In theory, a twisted pair cable need not be screened. That is why they're called unshielded twisted pair (UTP). Therefore, it can run a longer distance.

   CCTV Lens

   Q1: How do I set up an Auto Iris lens?
   A : An Auto Iris lens has two ‘pots’ on the side commonly marked ALC (Automatic level control) and LEVEL.
   The ALC control has settings of PEAK and AVERAGE (P+A).
   The LEVEL control has HIGH and LOW settings ‘H+L’.

   ALC
   The adjustment allows control over any bright areas in the scene e.g. sun reflection through windows, street lighting etc. There are two settings PEAK and AVERAGE.

   If set to PEAK, bright areas in the scene are taken into account more, reducing the contrast in the surrounding area. This allows more detail to be seen in the bright areas.

   If set to AVERAGE the lens takes the bright areas less into account which usually causes over brightness or flare in these areas, but raising the contrast of the surrounding area.

   LEVEL
   The only correct way to set the VIDEO LEVEL is by the use of an oscilloscope, for most Engineers this is not an option.

   A more practical method is to use a service test monitor and a camera that you know has been set up correctly to 1 volt peak to peak.

   Put the video output from this tested camera into the test monitor and adjust the contrast and brightness until you are satisfied with the picture. Mark the contrast and brightness controls so that you can set them to this position again.

   Set up each camera adjusting the ALC (as above) then adjusting the LEVEL to obtain a picture similar to that achieved with the test camera. (Making sure that your test monitor is set to your marked positions)

   NB: On most zoom lenses the ALC adjustment is a speed control for the Iris motor and is best left in the mid position. The Amplifiers on Auto Iris lenses are sensitive; so adjust the LEVEL and ALC with a proper trimming tool instead of an ordinary screwdriver, which can induce small voltages.

   Q2: Manual or Auto Iris Lens?
   A : The iris is the part of the lens that determines how much light falls upon the camera CCD sensor.
   The Manual Iris 'MI' lens has this fixed at the time of installation. As the light levels change in the scene, the lens can do nothing to prevent either too little or too much light entering the camera. Virtually all cameras employ an Automatic Electronic Shutter 'AES' to compensate for these variations when fitted with an MI lens. However they are only able to cope with a relatively small change in light levels.
    An MI lens should never be used in an external situation, as the camera will be unable to cope with large changes in light levels. Use an Auto Iris ‘AI’ lens in this case, or indeed anywhere where large scene illumination changes take place.
    The advent of new sensor technology such as PIXIM may result in a change to this situation in the future.

 

   Q3: Lens focal length "mm the number of" buy DIY !
   Step1. Measure the distance between "camera set up point" and "the target point", the distance = (A) m
   Step2. Measure the width of "target points" need to surveillance, the width = (B) m
   Step3. In accordance with the "Step 1" measured results "value A" s in the following table, find the closest to the needs of their surveillance photos
   (That is, the sample photos of " Width of picture you catch" and "the clearance of characters" similar to their own environmental monitoring)
   Step4. On the photo should be used in which mm lens focal length number => that have the lens focal length you need!
   Step5. Frequently to adjust:
   (Q1): the control according to the following example, to find a degree and I can see Wide similar location, but the characters are feeling too small, how do? 
   (Q2): control sample photos, find a character size and clarity, and I need almost the same, but the example of the lens can be used according to wide shot but not enough degree, how to do? 
   Note 1: monitoring cameras can seet 3:4 ratio of screen length, the above example is only marked Wide degree photos, photo length (height) = width X0.75
(Example: from the Department to use 60mm 5M length of the camera results 0.5M, the picture height 0.5x0.75 = 0.375M)
   Note 2: These values form the rack to monitor the photo is about 1.2M in height from the ground office, head-shot from in front of people and cars. If the photo shadow in the general height of the ceiling rack, ceiling or high ceiling environments, photographed on the first floor or second floor, third floor, shoot the first floor overlooking the shooting at this time ... ...
   Larger angle, you can take a larger area, but the figure would be less.
   Note 3: The above values for the use of the form 1/3 inch CCD cameras for surveillance testing, if the same applied to the lens focal length 1/4 inch CCD
   Surveillance cameras, camera angles will be smaller (smaller angles, shooting range will be available with smaller, but people will feel slightly larger than a More). 

   1/3 CCD and 1/4 CCD more surveillance cameras angles are as follows: 
    

 

   Q4: What is the Difference Between C & CS Mount lenses?
   A : The physical difference is that the back of a CS mount lens is 5mm closer to the chip than a C mount lens. You can always use a C mount lens on a CS mount camera by using a 5mm spacer ring (many cameras now have C/CS selectable adjustment screws or rings). You can never use a CS mount lens on an older style C mount camera. Cost wise the CS mount lens is much less expensive since it uses fewer glass elements. Quality of image is the same. C mounts are becoming less and less popular and are generally only used on the more telephoto focal lengths such as 25, 50 and 75mm, and bigger zooms.

 

   Q5: What is the vari-focal lens or zoom lens?
   A : A Vari-focal is a lens that is designed to meet the most challenging jobs by giving the installer the flexibility to adjust between different focal lengths using only one lens. When the situation calls for an odd focal length lens or you are not sure of the correct focal length required for the installation, using a Vari-focal lens is the perfect choice. How many times have you or your installer set-up a job just to be called back because the customer was not satisfied with the field of view of the picture? More than once, most likely. A simple adjustment to the zoom and focus on a Vari-focal lens is all that is needed to rectify the situation on the spot: a less costly and time-consuming prospect than having to order and install a different monofocal lens altogether.Surveillance effects are maximized since any desired angle of view can be obtained.