survtech

BCCS cable is quite valid for RF. Most homes are wired with it. In fact, CATV, MATV, Satellite ground stations and Cable companies use it, but what do they know? They've all fallen for the "con job". Do you have any idea what the vertical sync signal frequency is? Try 25Hz (PAL) and 30Hz (actually 29.94Hz color) (NTSC). OK. You're an "Installer and Trainer". I have an engineering degree with >45 years experience in electronics and ~20 years experience in CCTV system design, installation, troubleshooting and repair. But of course, you're correct.

For the same reason they make many types of RG-anything. Different cables for different applications. There's antenna, CCTV, digital and other uses for RG6. Each use has its own set of requirements. Don't be fixated on the shield construction. There's nothing inherently wrong with foil shielding for CCTV, but foil alone (or even foil plus 22Ga drain wire) is not enough. The point, as you steadfastly refuse to ignore, is low frequency (usually DC) resistance. For analog CCTV, which has relatively low frequency signals (25-30Hz) , DC resistance is important. Hence the requirement for solid copper center conductor and 90+% braided copper shield. Foil shielding plus aluminum drain wire (or a small copper drain wire) is cheaper to produce than braided copper shielding and, for RF applications, where the "skin effect" comes into play, is perfectly sufficient. The same goes for "BCCS" (bare copper-coated steel) center conductors. The higher the frequency, the more the signal migrates to the outside of any conductor. Since copper is quite expensive, it makes sense to construct high-frequency RF cables with a minimal amount of copper to save money. Solid copper would be unnecessary. Can the cable shield also contain foil? Yes, as long as it has sufficient copper in the shield to form a "return" for the signal. Your claim that foil does not block interference is untrue. It does, but foil plus a small (22GA) drain wire does not provide a low enough resistance to provide adequate return for the low frequency signals. For that matter, check out some of Belden's product line. 1694 has "Duofoil® + tinned copper braid shield (95% coverage). Does the foil prevent it from use for CCTV? Absolutely not. There are specialty cables with different configurations that are perfectly acceptable for CCTV. Serial digital cable, for instance, will pass analog signals just fine, as will cables with stranded center conductors. Equalization to extend cabling, especially "post", adds noise. It should be avoided whenever possible. That's not to say it can always be avoided - UTP active transmitters and receivers have equalization. In that respect, it is better to equalize the transmitter than the receiver but that option is not always possible. There aren't many applications where you can fit an active transmitter into the available space and it would be a royal pain in the a** to adjust equalization at the head end. By the way, stranded UTP cable is available from a number of manufacturers - specifically for areas where the cable is subject to flexing. And for use to transport analog signals, strict adherence to Ethernet termination guidelines is not necessary. We often use Telco "beans" to splice wires with no measurable effect on the video signal quality. The key is to maintain each pair's twist as much as possible to maintain the cable's noise cancellation capabilities.

And you seem fixated on CATV RG6 when it's obvious there is CCTV RG6 being manufactured by a number of companies. Other examples: Windy City Wire 606111-S - http://www.smartwire.com/SpecSheet.asp?sSumPartNumber=606111 Belden Model 1694A - http://www.belden.com/techdatas/english/1694a.pdf Commscope 5700 - http://www.commscope.com/catalog/systimax/product_details.aspx?id=25155 Liberty Cable RG6-CCTV-PL-BLK - https://secure.libertycable.com/prod_details.php?pitem=RG6-CCTV-PL-BLK Comprehensive Cable RG6 18 AWG BC CCTV Cable Plenum - http://www.comprehensivecable.com/store/p/14705-Comprehensive-RG6-18-AWG-BC-CCTV-Cable-Plenum.html Tappan Wire - http://www.tappanwire.com/product_details.php?pid=131&cid=8 Coleman Cable 92045 - https://www.ccixpress.com/wcsstore/CCIxpress/images/catalog/catalogPDFs/9-/92045.pdf Hosiwell F-RG-6/U - http://www.hosiwell.com/coaxial-cables/RG6-for-CCTV.html MCM Electronics 24-14360 - http://www.mcmelectronics.com/product/24-14360 Does it cost more? Certainly! For one thing, RG6 is less common for CCTV than RG59. For another, RG6 contains more copper per foot - copper is expensive! For a third thing, RG-anything has been replaced by UTP; both for IP cameras and, with baluns, for analog. Nevertheless, RG6 copper/copper is available and it can transport analog CCTV farther than RG59, despite your never having seen or used it. I have used it for runs >1,000 feet, but that was over 15 years ago, before UTP baluns became popular. Today, I would not usually consider RG6 or RG11 for long runs - I would likely use UTP passive/active or active/active.

I posted them for West Penn but here they are again: West Penn Type 806 RG6/U Type CCTV Coaxial Cable Conductor 18 AWG Bare Copper Stranding Solid Insulation Material Gas Injected Polyethylene Insulation Thickness .180” Nom. Number of Conductors 1 Center Conductor Shield 95% Bare Copper Braid + Tape Barrier Jacket Material PVC Overall Cable Diameter 0.270'' Nom. Approximate Cable Weight 26 Lbs/1M' Nom. Flame Rating UL 1666 Electrical & Environmental Properties: Temperature Rating -20deg C to 60deg C Max.Capacitance Between Conductors @ 1 KHz 16.2 pf/ft Nom. Velocity of Propagation 82% Nom. Impedance 75 ohms Nom. DC Resistance per Conductor @ 20deg C 6.5 Ohms/1M' Nom. Jacket Color Black RoHS Compliant Yes Mechanical Properties: Max. Recommended Pull Tension 41 lbs. Min. Bend Radius (Install) 2.5” Mhz db/100ft 1 .24 10 .52 50 1.18 100 1.83 400 3.95 700 5.38 1000 6.45 Note the difference in DC resistance per 1,000 feet: RG59: DC Resistance per Conductor @ 20deg C 10.1 Ohms/1M' Nom. RG6: DC Resistance per Conductor @ 20deg C 6.5 Ohms/1M' Nom. And no, CCTV RG6 doesn't get much use but that's due to cost. In point of fact, I used copper/copper CCTV RG6 on occasion for very long runs (>1,000 feet) but the advent of UTP, baluns and active transmitters and receivers made the additional cost and cable run requirements of CCTV RG6 not worth the effort. Also contrary to your logic - it has become very uncommon to find CATV RG59 due to its attenuation characteristics at the near-GHz frequencies common in today's TV signal transport and because the cost of CATV RG6 dropped to nearly that of CATV RG59 since much more of it is being produced. Still, despite the lack of use for TV wiring, CATV RG59 is still being produced (and often sold to unsuspecting CCTV installers) but it's pretty uncommon. For that matter, you can also use RG11 copper/copper for CCTV, though its cost is phenomenal: West Penn 811: DC Resistance per Conductor @ 20deg C 2.6 Ohms/1M' Nom. Good for up to 3,000 feet. " title="Applause" /> Here's a West Penn CCTV Cables Technical Bulletin: http://www.westpenn-wpw.com/pdfs/coax_train.pdf

Actually, it is. You can use CATV cable for very short runs (~100 feet), but for longer runs the attenuation becomes too great. Loss per 100 foot examples: West Penn 841 RG6/U Type CATV Coaxial Cable Mhz db/100ft 5 .45 55 1.45 West Penn 806 RG6/U Type CCTV Coaxial Cable Mhz db/100ft 1 .24 10 .52 Note West Penn type 806 is CCTV RG6. There are plenty of other examples of copper/copper RG6. PART NUMBER: 806 DESCRIPTION: RG6/U – 1 Conductor 18 AWG Solid, 95% Bare copper braid and an overall PVC Jacket. NEC RATING: CMR APPROVALS: (UL) C(UL) Listed or c(ETL)us Listed APPLICATION: Indoor for: Security Cable - CCTV http://www.westpenn-wpw.com/pdfs/coaxial_spec_pdfs/CCTV/806.pdf

I've used it before from the DVR spot monitor output to a LCD TV with a BNC fitting on one end and a RCA on the other to the composite input of the TV. Quality wasn't bad but do you think it will affect the picture quality of the camera's to the DVR? Yes it works & there are probably thousands of installations using it. Howeve the design parameters are different & there are problems that can be due to using RG6. Put it this way - if you already have RG59 you will gain nothing by replacing it with RG6 Not true. Don't confuse CATV (antenna) cable with CCTV cable. RG59 and RG6 antenna cable will not transport baseband video very far due to the high resistance of the copper-clad steel inner cable and the steel or aluminum shield. RG6 (and RG11, for that matter) CCTV cables work just fine. In fact, CCTV RG6 can transport analog video approximately 50% farther than CCTV RG59 (1,500 feet vs. 1,000 feet). Examples of suitable RG6 cables are West Penn 806 and Belden 1369.

Honeywell bites the big one.

Disregard Groucho. He likes to confuse things. The examples he gave are rare and only for use in certain specialized applications. 99(+)% of 120VAC outlets she encounters will be either the standard 2-prong plus ground (NEMA 5-15) or 2-prong less ground (NEMA 1-15) and NEMA 5-20 outlets will take standard two and three-pin plugs, anyway. That is, unless your daughter is planning on packing a clothes dryer, plasma cutter or electric oven in her carry-on.

The vast majority of buildings in the U.S. have grounded (3 pin) 120V AC outlets. In most jurisdictions, they are required by code, especially in commercial buildings. Occasionally, you'll find the older ungrounded outlets, mostly in older (pre-1970's) houses.

We use a glass cleaner that says it's suitable for plastic/acrylic surfaces (no ammonia). Or you can use Pelco's suggestion and use a cleaner/polish like Pledge that is also rated for acrylic surfaces. Heck, we use Scott Shop Towels (blue) instead of microfiber cloths and they work just fine. Just don't use stiff towels as they could scratch.

You would need a Video Server (encoder) to convert the analog PTZ to IP.

Yes, a number of manufacturers have smoked domes. Some even have other colors (Pelco's DF5 domes are available in Clear, Smoked, Chrome and Gold). It's rarer to find colored mini domes. The positive is the ability to hide the direction the camera is pointing. The downside is light loss. Non-clear domes add between 0.5 and 1.0 F-stops of light attenuation. The Chrome and Gold domes also require special cleaning procedures. The color is applied to the inside of a clear dome and standard cleaners will remove it or cause streaks. Personally, I never saw much point in smoked domes. In most applications, it would be pretty obvious where a camera is, or at least should be, aimed and the light loss can lead to grainy, noisy pictures in many areas.

Actually, no. Most of the issues displaying analog cameras on TVs is the relatively poor de-interlacing and upconversion circuitry from 480i to the display's native resolution (usually 720p or 1080p).

Yes, typically LCD TVs and monitors don't do a good job displaying analog cameras but there are a few LCD CCTV monitors that do well, including Orion and ViewZ.

read back a few posts: That doesn't answer my question, based on the OP's following statement:"The camera never came back up when it was reconnected to the DVR using the test cable."

So a power recycle didn't bring the video back up? The camera is still unuseable?

The camera's output is not disabled, just the signal won't pass.

No, it works for either protocol (note all cameras must be set for the same protocol). For 'P' protocol settings, see Page 10 of the manual: "DATA MERGER MODE (P PROTOCOL) In the P protocol, the CM9760-DMR merges PTZ commands from CM9700-CC1 units allowing you to control up to 32 PTZ cameras on one port. You can set the data manager to operate with two, three, or four CC1 units. To operate the unit in P protocol, set switch 7 on SW6 OFF. Refer to Figure 4 for connections. 1. Connect up to 32 PTZ cameras to Port 1. Refer to Table A for terminal connections. 2. Connect CM9700-CC1 units to Ports 2-5 of the data manager. You must use RJ-45 reversed cables to make all connections. 3. Set the DIP switches. Refer to Tables B and C. Figure 4 shows optimum switch settings. a. On SW6, set switch 1 ON if you have two CC1s connected to Ports 2 and 3. b. On SW6, set switch 2 ON if you have three or four CC1s connected to Ports 2-5. c. On SW6, set switch 8 ON if you want to give priority control to the CC1 on the lower numbered port. d. On SW6, set the remaining switches OFF. 4. Connect the supplied AC adapter from the DMR unit and into a wall outlet." Note, replace "CC1" with whatever devices you're using to control the PTZs.

Some Ganz cameras, especially the ZCD-5000 / GX5 series have optional internal baluns.

That's not the question. The devices listed allow two RS422 devices to control the same group of PTZs. I'm quite familiar with the possibilities here since I am considering their use in conjunction with a planned VMS replacement which would also eliminate our 9780 matrix switch. Most systems limit the number of analog PTZs that can be controlled to the devices connected to a particular encoder. In the case of the systems we are considering, that limitation would force us to run new control cables for a large percentage of our PTZs (we have almost 200). Dallmeier is the worst offender, requiring each PTZ's control line to be "home run". The only system we have tested so far that would allow us to retain our existing control cable configuration is Genetec, which allows any PTZ to be pointed to a specific encoder's serial port, whether the video is connected to that encoder or not. The Code Merger units would allow us to combine the RS422 outputs of multiple encoders to one control line, limiting the number of additional control lines we would have to run. The possible downside to this method is explained on Sennetech's website - each two-way split adds approximately 8ms of latency. In the case of their SCM-800-Pelco, which "Merges up to EIGHT Pelco RS-422 inputs into a single data line", that would be three splits, or 24ms. That is something we will be testing.

You have a couple of options. What you need is a "Code Merger" unit. Pelco has its own, the CM9760-DMR (http://www.pelco.com/sites/global/en/products/analog-systems-controls/range-presentation.page?c_filepath=/templatedata/Offer_Presentation/3_Range_Datasheet/data/en/shared/analog_systems_and_controls/cm9760_dmr_data_manager.xml) And Sennetech makes their SCM-200-Pelco (http://www.sennetech.net/Manuals/SCM/scm-pelco-22.pdf).

Your best bet is to utilize a spare pair in the elevators' traveler cable, if there are any. You can use baluns for analog or Ethernet-over-UTP adapters with IP cameras. If there aren't any spare pairs in the traveler cable, you can look at wireless but in my experience, that tends to get complex and unreliable. Wireless doesn't work very well for elevator shafts because the car's motion tends to create dropouts in the signal due to reflections in the shaft.

The Ganz ZCD-5000 GX5 series domes do have an optional NVT balun. The part number is ZCD5-NVT NVT Module for 5000 Series Domes. It mounts inside the dome. Another nice thing about the ZCD-5000 series is that they are about the only domes with CS-mount lenses, which are easily interchangeable.

We don't understand the problem. It looks clear to us.

Possible but not likely. The only times I've seen a back box fail was when water got inside and when lightning damaged the circuitry.