STP vs UTP for Video Surveillance Tutorial

By: Brian Rhodes, Published on Dec 20, 2017

For many video system designers, deciding which ethernet cabling to use is a quick decision: go with the cheapest. However, this overlooks the possibility cable, and the video it carries, needs extra protection against common electromagnetic interference.

STP vs UTP for Video Surveillance

Is the difference between cable types that significant? In this note, we examine shielded cable, look at how it can prevent video problems, and compare it to nonshielded alternatives.

Inside this note, we explain:

  • How Electrical Interference Affects Video Quality
  • What Shielded Cable Looks Like Compared To UTP
  • Physical Differences Between Cable Types
  • Other Names For STP
  • Typical STP vs UTP Costs
  • Use STP Against Common Sources of Interference
  • Practical Use Is Limited, But Axis Disagrees

One Of Many Cable Tutorial Series

This tutorial is one of a number IPVM has addressing the topic of cabling. Others include: Cat 5e vs. Cat 6 for IP Cameras, Cabling Best Practices Guide, Network Cable Testing Guide, Grounding and Bonding for Video Surveillance, and more.

*** **** ***** ****** designers, ******** ***** ******** cabling ** *** ** a ***** ********:** **** *** ********. *******, **** ********* the *********** *****, *** the ***** ** *******, needs ***** ********** ******* common *************** ************.

STP vs UTP for Video Surveillance

** *** ********** ******* cable ***** **** ***********? In **** ****, ** examine ******** *****, **** at *** ** *** prevent ***** ********, *** compare ** ** *********** alternatives.

****** **** ****, ** explain:

  • *** ********** ************ ******* Video *******
  • **** ******** ***** ***** Like ******** ** ***
  • ******** *********** ******* ***** Types
  • ***** ***** *** ***
  • ******* *** ** *** Costs
  • *** *** ******* ****** Sources ** ************
  • ********* *** ** *******, But **** *********

One ** **** ***** ******** ******

**** ******** ** *** of * ****** **** has ********** *** ***** of *******. ****** *******:*** ** **. *** 6 *** ** *******,******* **** ********* *****,******* ***** ******* *****,********* *** ******* *** Video ************, *** ****.

[***************]

Electrical ************ ******* ***** *******

** *** ***** ************ world, *** ******** ** often ** ******* *** NVRs, *** ****** ********* to *** ******* ** between. **** ***** ******* problems *****, ** *** be * *********** ******** to **** ****** *** tweak ********, **** ** discover ******** *** ***** present.

*******, ****** * **** look ** ******* *** resolve ********* ******. **** the ******* ** *** image *****:

emi impact on video

********** ************ ** *** cabling ****** ***** **** type ** *******. *** only **** *** ***** transmit ******** **** *******, but ** **** *** attract *** ******** ********* 'noise'. * ******** ***** can ***** ** ** 'ad-hoc *******' ***** ********* why ***** ********* ** sometimes ********.

'STP' ** ********** ***** *********

* ***** ******** ********** between *********** *** *** STP, ** '******** ******* pair' ******* ******* *** primary ***********. *** ***** below ***** *** ********** metallic **** ********* *********** wire ***** ** ***:

stp vs utp

'*********' ****** *** ** confused **** '***** *********' where * ****** ***** or ******** **** ** mesh ****** *** ****** bundle ** *****. ***** the ******** ** ************ wrap ***** ****** ***** wrap *** ****** ****** shares **** ** *** same ********, **** *** not ********** ** *** other *** ****** ** different ***********.

Other ***** *** ***

*** ****** ************ *** shielded ******* **** *****, 'STP', ** ********* ****** 'U/FTP' *** '**********/****-******** ******* pair' ** '*/***' *** 'Shielded/Foil-screened ******* ****' *******. Especially *** ********** ******* specifications, **** *** *** these ********* ************* ** describe ******** *******. *******, in ******* ***, *** 'STP' ************ ** **** widely ****.

Physical *********** ******* ***** *****

*** ********* **** ********** the ******** *********** ******* UTP *** ***.

  • ******** **** ******:* **** ***** ** foil, ******** ********, ********* wire *****. **** ***** is ***** ****** *** 'drain', *** **** ** properly **********. ******* ** adequately ****** *** ***** can ******* *** ******** that *** ******** ** mitigate.
  • ******* ******:*** ***** ****** ** foil ******** *** ****** add ******** ** *** cable ******. ** * result, * ******* ******* insulating ****** ** ******, which **** ********. *******, STP ** ******* *** thicker ******** ** ***, and *** ** **** difficult ** ******* ** a ******.
  • *****, **** ******, *** Groundwires:********* ** *** ***** manufacturer *** ***** ** STP, ***** ******** *** be ******* *** ******** found ** *** *******. This ******** ******* ******* 'core' ******, ******* ** aid ********* *** ******, and ********** ********** ********* wires. ***** ** ** outdoor ***** ***** **** a ****** **** **** separates *** ***** **** quadrants ****** *** ******.

outdoor rated cable with center core

STP ** *** ********** ***********

***** ********** ******** ******** provide *** **** ********** that *** **** *** possess.

  • *** **********:*** ******* ********* ** shielding ** ********** **** environmental*************** ************, ** ***. ******* each **** ** ************ wrapped, *** ******* *** ambient ************ ** ******** and ***** **** *** cable ** ************* ********* or **********.
  • ******** **** *****: ************ *** ** a '***-*** ******' ** that ********** ******* ** a ****** ****** ** interference. ** **** ************, like ********* ******* ******* or *************, ****** ******** cabling *** ** * uncontrolled ******* *** ************ that ****** ***** *********** off. *****, *** ******** of **** ********* ********* or ********** **** *******.

Cost **********

***** *** **** ******* $20 ** $** *** camera ******** ** *** cabling, ******** ***** **** of *** ****, ***** on *** ***** ***** ~40% **** **** *** and ********* ** *** much ********** ***** ** larger ******* ** ****** for *** ******, ******* and **** ***** ***.

Use *** ******* ****** ******* ** ************

******, *** ****** ** used ***** ************ ***** be * *******. ** firm ** ***** ***** places ******** *** *****, here *** **** ****** where ************ ***** ****** video *******:

******** ** **** ******* Wiring

***** ****** *** ********* with **** ************ **** run ******** ** ** too **** **** *****. Even ****** *** * compliant ******** ***** ****** a ******** ******* *** be * ****** ** video ************.

high voltage power causes emi

***** ** **** ************* exists *** **** ** use *** ** **** situation *** *****, **** practices ** **** ********** design ****** **** *** data ******* ******* *** same *******, ********** ** how ** ** ********* in*** ** *******, **** ** *** using *** *****.

**** ********* *******

**** ******* *** **** common ***************** ******** **** electric ******, ***** ************, magnetic *****, ** ********* can ********* *********** ***. Especially *** ********** **********, where ***** ******* *** common, ********* ***** **** is ** ********* **********.

inductive devices cause emi

***** ******* *** ************* by ***** '*********' **********, ** ***** reliance ** ******** ****** for *********. ***** ********* to ******* **** **** equipment, *********** ****, **** maglocks, ********** **********, *** industrial ********* *** ******** enough ************ ** ******* video *******.

*** *******/****** *******

****** *** ******* ************* radios ******* **** ************. While * ***** ******* may *** ** *********** enough ** ** * problem, ******** **** **** near **** ******* ********* or ************ ****** ** run ***** *** ** eliminate ********.

low powered communications equipment

**************** ********

*** ** *** ******* sources ** *** *** common ***** ********. ***** the ****** ********** ** ethernet ****** ******* ******** of ***** ********, ** cabling ****** ** *** in ****** ***** ***** on*******, ** ****** ** run ***** *** *****.

fluorescent light fixtures

**** *****, ***** *** many ********* ***** ******** 'installed ** ******' ** to ** **** *** video. ** **** *****, cabling ********** ********* ** the ****** ** ***** quality ******** **** ****** unfixed ***** *** ***** network ** *********.

Practical *** ** *******

** *** **********, *** vast ******** ** *** surveillance ******** ******* *** been *** ***** ***, and ** **** ** significant ****** ** ******. Since ********** ******** **** the *********** ****** ** imperatively ************ ** ********** and ********** ****** "**** *********", ** ** ********* suitable *** ***** ******* design.

Axis: ********* *** *** ********

******** ***** **** ************** declared *** ** *** mandatory *** ******* ******* per ************ **********:

"*** ************** ** ** deploy ** *** ******* cable ** ********* ********** environments. ******** ** ********* indoor ************ *** ***** the ******* ***** ** located ** ******** **** electrical ***** ****** ****** or ***** ***** ********* loads **** ** ****** or ********** *** ** close ******** ** *** camera ** *** *****.It ** **** ********* to use an STP cable where the camera is used outdoors or where the network cable is routed outdoors."

**** ** * **** statement ***** ****~**% ** *** ******* are ********* *******. ********* ****' ************** may ***** * *********** increase ** ******* ******* cost *** ** ****** overkill ******** ** ****** problems *****.

******, *** ********** ********* with *** *********** *********** of ***. *** ******** use ** *** ** where ******** ** *** in *** '**** ****' areas ********** *****.

Test **** *********

***** ****** **** * * questions ****

[****: **** ******** *** originally ********* ** **** and ************* ******* ** 2017]

Comments (23)

Undisclosed Manufacturer #1

12/20/17 04:44pm

******* ************** ******** ******** *** ********* *** ********* * *** of *** ****** **** ** *** ***** **** ****.******* *** ****** ************ **** ****** ********* *** **** ********* in *** ********** ******* ********. ** **** *** ******** **** them, **** *** ***** ******** ***.

************* * *** ** *** ****** ******** **** *** ******** transitioned **** ****** ******* ** ** *******. ************* **** ********* that ****** *** **-*, **** *** **** *** ***/*** *******. Performance ************ ** *** ****** ******** *** **** **** ********, compared ** *********** **** ********. ******** ********, *********** **********, **** field ************, *** ********** ** **** **** *************.

***** * ********** *** ******** ** ** *** ******* ******, I ***'* ******* **'* ********* *** *** ******* *******. *** components *** *** **** ******, *** **** ***** ********* ** install. **'* *** **** *** *****, *** *** ***** ******, jacks, *** ***** ***** ** ****. **** **** *** ********** expense **** ******** ** * ******** ******** *** ************.

** **** ** ** ****. ***** ******** ******** *** ****** delivery. ** *** ******* ** *** ***** *** ******** *** other ******** ********** ******** ** ****** ****** ******** ** ******** traffic *****, *** ** *** ******* ***'* ********* *********** ****** the ************** **'* * **** ***** ** ****.

Undisclosed Manufacturer #4

In reply to Undisclosed Manufacturer #1 | 12/21/17 08:34pm

**'* *** **** *** *****, *** *** ***** ******, *****, and ***** ***** ** ****. **** **** *** ********** ******* when ******** ** * ******** ******** *** ************.

*******, *** ** **** ** ********* ******* *** ***** **** be ******** ******** ** *** ********* *** **** ** ** antenna - ******** ********* ** *** *** ***** ***** ********** than **** ******* *** *******, ****** ***.

Undisclosed #3

In reply to Undisclosed Manufacturer #4 | 12/21/17 11:17pm

...*** ***** **** ** ******** ******** ** *** ********* *** work ** ** ******* - ******** ********* ** *** *** cause ***** **********...

*** **** ** *** ****** **** ** *** *****, *****?

Undisclosed Manufacturer #4

In reply to Undisclosed #3 | 12/27/17 10:20pm

***, ** * ********** ** (*** * ** ** ***** expert) ********* ** *** ******, ** ***** ***** **** ** all **** ** ********. ********* **** ***** *** ***** ****** loops *** ***** **** ** ** ** *****-***** *********** ***** don't ********* **** **** ******** **************. ****** **** **** ** is ****** ** ***** ****** ***** ********** ** *** ** through *** ***** **** ** ********* *** **** ***?

Avatar

Brian Rhodes

IPVMU Certified | In reply to Undisclosed Manufacturer #4 | 12/29/17 04:35pm

********* ** **** ** *** *** ****, ******** *** ******** end "***** ****** ** ******" ***** ****** ********* ** ************.

*** *******, **** (******) ****** ************* ******* ********* ** *** reader, *** *** **********, ** ******. **** ****** *************, ********** PTZs, ******* ****** **** ** *** *********.

** *******, *** ****** ** **** ******** ** **** ** the ****** ****, *** *** ** **** ***** ******* ********** earth ******.

** ** ***, ** *** ******** * **** **** ***** at *** ** *** ****** *************. ** **** ******* *** and *** ********* ******* ** **** ***** *** ** *** what *********** *** ** ****. **** *** **** **** *****!

Avatar

Brian Rhodes

IPVMU Certified | 12/20/17 04:54pm

****** *** *** *******. ** ***** ** ***** ***** ********** and *************** ** ******** *** ** ***** ************ ******** ** ********** ******, *** *** '**** *********' ****** ** useful.

********** ****** *** ** **** * **** ** *********** ** *** ***** *** *** ** **** **** ** is.

Undisclosed #3

In reply to Brian Rhodes | 12/21/17 08:24am

********** ****** *** ** **** * **** ** *** ****...

**** ***’* *********’*****:

Undisclosed Manufacturer #1

12/20/17 05:00pm

****** *****. *'** **** * ***** **** *** **** ** years... ***** ********... ***** ************. ******... ***** ********* ****** **** a **** ** *** **** ** * ********* ****** ** nothing ****. ***** *********!

Avatar

Brian Rhodes

IPVMU Certified | In reply to Undisclosed Manufacturer #1 | 12/20/17 05:03pm

**** = "****** **** **** ****"

Undisclosed Manufacturer #2

12/21/17 07:44am

***** **** ********* **** **** *** **** **** ****** ******* is ******* ** *** ***** ******* ** **** ****** *********. Not **** *** ****** ** ** ***** ** ********* ** keep ** **** ***** ********** ****. ******* **** **** ** running ***** ** ********* **** ***** **** ** *****. ********* inside *******.

Undisclosed Manufacturer #2

12/21/17 07:52am

******* ** **** ** ** ***** **** *** ********** ********** runs ***** *** *** ******* **** **** * ******** ********** to ****** *** **** *** **** *******. ** **** ***** the *** ******* *** ** **** ****** **% ******. ** if ***** ** * ******* ** *** *** ** *** time. ** **** **** ** *** **** ********* *****. **** expensive ** ***** **** *** **** *****.

* **** **** ******** *********** *** *** ***** *** ***** house ** *** *** *** *** ******* ************** **** **** can ***** ***** ******* ******* **** *** **********/********** **** *** all *** **** **** **-*****.

Dennis Ruban

12/24/17 06:24am

**** **** ** ****** ** ****** ****** ***** ** ****, like *** ** ***, ***. ** *******, ** ***** *** talking ***** *** ** *****. ** *** **** ****, **, 7 *** **** ******, *** **** ******* ******** ** ****.

**** * ***** ** ******, * *******, **** **** ** the ********** ***** ***** ***** **** ***** ***** (*** ** the **** ***) *** **** ******* **** ***** ** * cable *** ******* *** **** ** *** *******

Undisclosed #3

12/24/17 08:40am

***** ***** *** ***

***, *** *** ** **** *** ***** *** **** ********* instead ** ‘***’ *********** *** **** ********* ****:

Undisclosed Integrator #5

12/28/17 04:40pm

***** ** ** ************* ***** ****** *******?

** *'* ***** * ** ***** **** ******, **** * use ** *** ***** ** ******* *******?

Avatar

Brian Rhodes

IPVMU Certified | In reply to Undisclosed Integrator #5 | 12/28/17 04:54pm

*******, ****** *** *** ********.

******* '*********' ******** ******* ******* (***) *********** **** ****** (****** loss), *** ********** ** *** *** ***** ******* ** **** as ** ** *** ***** *** ******.

** * ***** ** ************, **** ***** ** ******** ** design, *** *** ************* ** *** ****** *********** ** ****** loss. *******/**** ***** ********* (**: ***) ****** ******* (**: ****) results ** **** **** **** *** ****** ** ***** ****.

** *** **** ** *******-****/****** **** *** ********, ********* ***** reduce ****** ****, ******** *** **** *** **** ** ******* to ***** **** **** *****.

Undisclosed #3

In reply to Brian Rhodes | 12/28/17 05:14pm

******* '*********' ******** ******* ******* (***) *********** **** ****** (****** loss), *** ********** ** *** *** ***** ******* ** **** as ** ** *** ***** *** ******.

** ***** **** * *********** ***********, * ***** ***** *** opposite, ** *** ** ***** ******* ** *********.

**** ******,******** **** ***** *** *** **** *** *****, *** ** not ******** *** ** ******-****-*************** ******* ** *** ******* ** ********.

**** *******, **** *** ***** **** ***** ** **** *** will ******* ** *********/********* ** *** ******** ** ** ***** varying ******* ****** **** *’* *** *’*. **’* **** *** extreme ***** **** ********* ** * ******* ******.

****.

*****: ** *******, *’* ****** **** *** ****** ** *** on *** ****** ****** ******* ** ** ********* ** **** of *** ******. *** **** *** ****** ******* ******* ******* as ****.

Avatar

Brian Rhodes

IPVMU Certified | In reply to Undisclosed #3 | 12/28/17 06:20pm

* ** ****** **** ** ****** ** ****** ************ - signal **** - ***** **** **** ****** *** ** **** important ** ******* ***** ****** **** ***** *******.

****** ** **** ** ****** *** ******** ***** ******* *** impacts. ********* ***** ******* **** ****.

Undisclosed Manufacturer #1

12/28/17 05:17pm

********* ***** ******* *** (********** ******** ************). ****** **** ** caused ** *********** (**** ** *** ****** ******** ******* *** length ** *** ************ *****). **** ** ***** ** **** or *** *****, **** ** ***** ********** **** **** ****.

*** ***** **** ** ******* ******* ******* *** ********** **** UTP *****, ********** ** ***** ********* (******* ** ********). ***** twist ******* ****-**-**** *****-****, ***** ** ****** ******* ******* *** pairs ****** *** ***** ******. *********** *** ** ******* ** using * ******* ***** ****. *******, ** ***** **** **** have **** *********** **** ** ***** **** ******* ** **'* electrical **********. **** **** *** *** *****, **** ******** *** 24 ** *** **** *** ** **. **** ** ********* found ** ******** * ***** ***** *** ****** ****.

**** ** * ***** ****** *** ****** ******* ******* ** its ****** ****** *** *** ******** **** ** **'* *********. The ********* ****** *** *** **** ** *** ********, ***** path ****, **** ******, *** **** *** ****** ************. *** with ****** *** **** ***** **** ** ***** ***** *******, and ******* * ****** ************** ******* **** ** ** ****** connectivity.

*'* *** *********** **** *****, **** ****** ****** **** *** weeds.

Chad Rohde

In reply to Undisclosed Manufacturer #1 | 12/28/17 10:42pm

*** **** ****** *** **** ***** **** ** ***** ***** comings, *** ******* * ****** ************** ******* **** ** ** camera ************.

* **** ********* ***** *** **** *** ** *********** **** STP **** ***** ******. * ***'* ******** ** ** *** a ********** ****** ** *** ********* ****** **. ** **** done ** **** **** ******* * ******* ** *** ****.

Undisclosed Manufacturer #1

In reply to Chad Rohde | 12/28/17 10:52pm

******* **** ** ** ********. ** *** ******* *** *** grounded ********, **** *********** ****** ******** *** *** **** ** where ** **. **** ***** ** *** **** ****** *** recommendation *** ****. **** * *****.

Chad Rohde

In reply to Undisclosed Manufacturer #1 | 12/28/17 11:14pm

** *** ********* ** **** ******. *** **** ***** *** lines ** ******* **** **** ** **** ************, *** **** an ******* ******.

****** ***, *** *** ***** ** **** *** *** ******, the ****** ***** *** ********.

Chad Rohde

12/28/17 11:00pm

****** * **** ******** ***** *****, **** *********, *** **** shielded ** ********** ***** **** *****, * ****** *** * company ***** * *** ** *** **** ******. ** ***** run **** ******** ***** **** ** *** ****, *****, ** the **** ***' ***. ******* **** ** **, ** ** surprising **** ** ***** ****** *** ******** ***** **** *** horrible *********** ** ******* ***** **** ********* ***** ******** ** us.

*** **** *** *** **** ***** ******* * *** ***** of ********** ************ ** *** ****** **/** *********** **** *****.

**** *** ****** ***** * **** ** **** *** ***** others **** ***** ******** ********. *'* *** **** ** * book ******.

Chad Rohde

12/28/17 11:30pm

**** ********* *** *** ******** ** **** **** ****** ****** to ******* ***** *********. *** ** **** ********** ************. ******* provides **** **** ***** ** ****** **** ******* ******* ** this *******. **'* ******** ** ************* ******, *** ***** ******** for ******* ****** ****. *** ****** ** ****** ***** **********.

****** **** ******, ***, ** ****** ********* ****** **** **** the ******** **** ********* **** **** **** ******** ***** ****** you ******* * ********* ****** **** **** ** ** **** resistance *** ******* *** ** ****** **** **** ******** ***** - ***** ******* *****

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