Subscriber Discussion

Question About Video Picture Quality In Elevator Cars

BC
Brian Clements
Jun 11, 2019

We recently installed analog cameras in 3 elevator cars. The video quality is great when the car is not in use, but as soon as the car starts-up the video quality degrades. We are using an 18/2 shielded cable that was already in the travel cable of the elevators. We began by grounding the shield on the end of the cable at the car. I noticed that the interference was present, I then grounded the shield on the other end in the elevator equipment room, it made no difference. We are sending the analog signal through the 18/2 shielded cable using passive baluns. We then are sending the analog signal into an encoder where it is switched to IP, and connecting to our VMS.

 

******

Avatar
Clint Hays
Jun 11, 2019

*'** *** *** ***** ****** ** shafts ** *** *** ** *** travel ******. *'** *** **** **** 50+ ****** ** ****** **** **** a ***** ***** *** ****** **** but * ***'* **** ** ****'* an ****** *** **** ****.

(1)
Avatar
Sean Patton
Jun 11, 2019

***** *** * ****** ** ******* of ***** * ***** **** **** first:

*) ***** ** * ****** *** shield ** *******/****, ********** ******* *** indicate **** ********* *** ********* **** no **********. **** **** ** ******** cable ** ** (*.*. *******/****, ****)? How *** ** **?

*) ** *** ***** ****** ** wiring *** *** ******* ******* **** or ****** *** ******** **** *****/***** supply? *** ***** ***** ** ******** the ****** ******* ***** ***** **** the **/* *****. ** *** ***** supply *** *** ******* ********/********/******** ********?

** ***** *********, ******** ******* *** be * **** ******, *** *** not ****** **** ** **** *********, and *** ******* ************ **** ******** contractors.

(2)
(1)
BC
Brian Clements
Jun 12, 2019

*** ****** ** * ******* ******, and *** ********* *** * ****** over * **** ***. ** ****** the ****** **** *** *** *** using * ****** ****, ***** *** little ** ** ************ **** *** cars **** ** ********, ** * think ** *** **** *** ************ through *** ***** ******. *** ***** is ********** ***** ****** ** **** the **/* ****. ***** *** ***** sections ** **** ( **** **** 18") ** **** *** ** *** cable **** *** ****** *** ******* to **** *** ***********. * ** going ** *** *** **** * shield ****** ** ** *** ** it ***** *** **********. *** *** thing **** ******* ** ** ** unhooked *** ****** **** ****** ** both ****, *** ** **** ** difference ** ***.

* ****** ** **** **** **** IP ******* ** *** *********, ****** due ** ****. *** ****** ******* do * ***** *** ******** **** a ***** ***** ** ** ******** car, *** * *** *** ** to * ****** ******* ** *** encoder. ** **** *** **** ******** on **** ** *** ***** ********* on ******. * **** *** ** use *** ******** ******* *** *********. The ********* *** *-*****/****** ** * parking ****** **** **** **' ****.

**** ****** *** * ***** ** going ** * ****** *****, **. the ******* ** *** ***** ***? Total ***** ******** ** **** **** 150'.

UI
Undisclosed Integrator #1
Jun 12, 2019

*** ********* *** ****** **** ** the ******* **** ***. 

BC
Brian Clements
Jun 12, 2019

***** **** ******* *****, *** ** made ** **********. * **** ************ the ****** ** **** **** *** it **** ** **********.

 

******

Avatar
Clint Hays
Jun 12, 2019

*** *** ****** ********** ** *** cabling ** * ***** ***?

BC
Brian Clements
Jun 12, 2019

*** ***** *'* ** *** ** the **** ******** **** ** *** travel *****. ***** *** ****** ** other ****** ** *** ****** ***** though. * ****'* ***** ***** ***** a ********* ****, * **** ******* the ******** ***** *** ***** ** be ** **** ***. * **** 2 ***** ********* ** ****** **** have ****** ******* ***** ******* *** same *** ***** * **** ****, and ***** ** ** ********** ** any **** **** ***** *******.

Avatar
Craig Mc Cluskey
Jun 27, 2019

*** ****** ******* ** * ***** job ******** **** * ***** ***** as ** ******** ***, *** * can *** ** ** * ****** cameras ** *** *******.

**** *****/***** ** ******* ** *** use?

******,

*****

BC
Brian Clements
Jun 27, 2019

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

MM
Michael Miller
Jun 12, 2019

** **** **** **** ** ** cars ***** ***/**** **** *-**** *** have *** *** *** ******.   **** about ******* * ***** ******* *** putting ** *** *** ** ********* the ****** ****** **** * ***** IP ******? 

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