survtech

No, HD-TVI is analog, as is HDCVI and AHD. The only truly digital choices are IP and HD-SDI.

Thank you for your quick response. So IP cameras aren't bothered by interference? That's good to know. I am trying to switch our camera systems over to IP for simplicity and ease of installation, but I was worried about the interference part. As far as the cable being ran close to high voltage cables, we have no choice. The shipyard provides wireways for out cables, cable trays is what they are. But it's community space. That means that the DP guys run their cable in there, the Caterpillar guys run their cable through there, the thruster power, thruster controls, generator signal and controls.. It's a mess. We try to keep ours to one side, but we end up crossing over these other cables a lot. Oh, they can be bothered, it's just that they're a bit more immune and the signal is typically go/no go; essentially it's either there or it's not. Like I said, the only thing that would be completely immune is optical fiber.

Camera cables should never be run close to high voltage cables. Although it is somewhat possible that more shielding would help, it is difficult to find quad shield RG-anything that has a solid copper center conductor and sufficiently low resistance in the shield for return. That affects the distance the cable can transport the signal. One option is fiber. Optical Fiber transport, while expensive, is totally immune to electrical interference. You also might try fully digital cameras (IP or maybe HD-SDI). Digital signals are relatively immune to noise and interference.

A lot depends on the design of the windows. Low-E windows are designed to reflect IR back outside so a low-E window passes little IR. Standard glass passes a fairly large percentage of IR. There are also two different types of low-E glass: one is designed for colder climates and actually passes IR to optimize solar heating during cold months. The other type is designed to reflect all IR back outside. It also depends on the exact wavelength of the IR. Low-E is not a perfect reflector of all wavelengths of IR light. It reflects more of the IR light the further it is away from visible light in wavelength. Since IR for cameras is very close in wavelength to visible light, even low-E glass will pass a fair percentage of it. The three types of IR illumination are 715-730nm, which produces a red glow like a red traffic light, 815-850nm, used for semi-covert IR with a faintly red glow only just visible and 940-950nm, which is totally covert. The shorter the wavelength, the less it will be attenuated by the windows. Most IR illuminators use 815-850nm light. So your answer is "It depends..."

Why NFS? It is a little-used platform compared to alternatives and is primarily oriented towards the Unix O/S. I personally prefer DAS to NAS but that is basically due to my system design preferences and the redundancy and capacity requirements of our Enterprise system (700TB total storage recording a total bit rate for all cameras of approximately 4,000Mb per second). Our servers have both stream and bit rate limitations so our 1,200 cameras must be divided up to multiple servers. Although that doesn't totally preclude NAS, it does make it more difficult to design and implement.

RG59/U should be good for at least 750 feet, and probably as far as 1,000 feet.

Not to mention that interlaced video does a crappy job displaying license plates anyway. And analog cameras have interlaced video.

You would need to add encoder(s) and hook them up to a WiFi router. Not cheap. You might just be better off replacing the cameras with IP cameras anyway.

You're welcome.

It depends on the power draw of the camera. In most cases, maximum PoE distance will be the same as maximum Ethernet distance (100 meters or 328 feet). That said, high power devices like PTZ cameras have reduced distance limits. CAT6 may work for slightly longer distances, depending on the gauge of the wires.

Yes, that's what we do. If you don't have a copy of the manual, download it HERE. Go to Section 17, Direct Camera Control and follow the directions. One thing to be aware of, the CM9760-KBD can only output Pelco P protocol so for PTZ testing, you will have to switch the dome drive to that mode, if it doesn't auto-sense it (Spectra IV's auto-sense, Spectra II and III have to be manually switched). Also, be aware of PTZ addressing. The keyboard has to be set to control a specific address. We usually set dome drives to address 1 for testing, then set the address to whatever is required in the field.

WOW!!! 12 steps for each side of the splice? And I assume it only works on "standard" RG59/U? No plenum? No allowance for oddball RG59/U center conductor and outer diameters? It appears that the cure is worse than the disease...

Marshall Electronics - Optical Systems

I mis-spoke. Actually, it is not so easy to reprogram firmware in Spectra III and especially Spectra IV. We obtained the programming kit and software from a former Pelco factory rep and attempted to just update the firmware on a Spectra IV DD4CBW35 (35x Day/Night). The attempt wound up screwing up the camera. The original problem was slow response to Preset 1 and the lack of certain functions in the camera's menus. After updating the firmware, the process apparently added a password to the camera programming so that now we can't access much of its menu or even program a preset in. We've tried every password we could think of and it remains locked. Spectra II's have replaceable firmware chips and TLS will sell the updated chip with replacement modules but III's and IVs have non-replaceable chips. The (not so) funny thing is that after we encountered the problem, I talked to the former rep and he said "You were able to get the firmware updater to work? I'm surprised you even got that far!" Sorry for the confusion.

Sorry. I asked my PTZ Tech and he says he's never seen that problem with Spectra IV's. I suggest contacting TLS Electronics directly. They carry the parts and can often help with troubleshooting. 888-590-9923. TLS Electronics

Yes. Upload the picture as an attachment (under "Upload attachment" below where you type your post), then click "Place inline". See below:

You tried another camera module? Was it the same model number? Pelco has used many camera modules in their PTZs and each one typically requires different firmware.

It doesn't have much potential in the U.S. market. Why would it have any in Vietnam?

Probably a worn out key. Although not real easy, if you take the keyboard apart, you can lightly clean the membrane with isopropyl alcohol on a cotton swab. Also clean the contacts that the membrane touches on the circuit board with alcohol. Only use a couple of light swipes on the black coating on each key on the underside of the membrane because if you clean too much, you'll remove the coating and be in the same circumstance. Alternately, you can buy a new key membrane. http://www.tlselectronics.com/mm5/merchant.mvc?Screen=PROD&Store_Code=TLS&Product_Code=KP01-0101-0001&Category_Code=

Many options. Ethernet extenders can easily supply PoE 200M, unless the camera has power hungry heaters/blowers. You need to know the power requirements of the camera. In the case of environmental cameras, some would require external power, even with Class 3 PoE.

Yes, but there's analog and there's Analog. The majority of casinos still use analog cameras but typically with encoders connected to a networked VMS. It is pretty much impossible to obtain parts for any VCRs except Sanyos and their SRC-800 series are about the only VCRs still being sold (but only refurbished, not new). A few casinos are 100% IP but that is a small minority. Most casinos I've dealt with are on their second or third generation of digital recording and are slowly converting to IP megapixel cameras. Where I work, we bought our first NVR/VMS system in 2003 but all cameras remained analog until 2013. In 2013, we completely replaced the first system (except most of the cameras). The new system included 100 IP/MP cameras and a complete overhaul of our Server Room and Control Room plus the addition of strategically located edge switches but we retained most of the analog cameras via encoders. Since then we've been slowly replacing analog with MP/IP as either the need arose or the improved resolution demonstrated sufficient benefit. At the 1-year point, around 15% of our (~1000) cameras are megapixel IP and by the end of the year, megapixel will probably be around 20% of total camera count. I expect the rate of conversion will slow down once we run out of applications where the much higher cost of megapixel cameras is justified. Analog camera availability will also play a role, as well as the eventual need to expand our edge network and IP infrastructure. I don't anticipate a complete conversion to IP cameras for the foreseeable future. ----------- By the way, HD-SDI and Analog HD (HDCVI, HD-TVI, AHD) systems are rarely deployed in larger casinos, maybe in a few small properties. Those systems are not well-suited to large-scale deployments due to the limited transport distance and their incompatibility with most Enterprise VMS'. Also, latency is a non-issue with at least some IP systems. Our system has an average latency of less than 150ms. It was a concern of mine when we started testing replacement systems and some of the systems we tested had very high latency (Avigilon had >500ms and Pelco Endura had >300ms) but most of the other systems we tested had well under 200ms.

Wrong. Sensor size has no bearing on resolution. 1/2.7 is a slightly larger sensor than 1/2.8, assuming the sensors are measured in the same way. But you can't even conclude that without more information, which camera manufacturers rarely publish. For practical use, there is basically no difference between the two sensor sizes. You might see a slight difference in the field of view when comparing between the two with a fixed focus lens but it would be minimal.

The power supply is NOT in the back box. It is inside of the dome drive. That is where the kit is installed.

You have to remove the tilt leg, replace the belt, then remount the tilt leg.

Why would anyone parallel multiple pairs for analog video? One pair is 100 ohms, which is what baluns are designed for. Two pairs would likely create an impedance mismatch, which could potentially cause ghosts and double images in the picture. There are uses for the extra pairs in 4-pair cable: 2-3 pairs can be used for power or multiple cameras can be transported over a single 4-pair cable (one pair per camera), etc. This reminds me of the people who replace 1 amp fuses with 10 amp fuses, figuring that if 1 is good, 10 must be better?????