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RE: Voltage from a CCTV camera



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Measuring with what? Multimeter?

=20

A scope is the only way to measure the voltage with any accuracy as the
wav=
eform will confuse the meter.

=20

=20

Dave=E2=80=A6

---

Very funny Scotty, now beam down my clothes=E2=80=A6

---

=20

From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx]=20
Sent: 24 November 2017 04:00
To: ukha_d@xxxxxxx
Subject: [ukha_d] Voltage from a CCTV camera

=20

=20=20

=20

I'm wondering what voltage I should expect on the video signal from a
conve=
ntional (i.e. not IP) cctv camera. The cameras all have a 12v supply and
th=
e voltages across the pin and ground at the DVR BNC end range around 1.18,
=
1.5, 1.7, 1.2 and 2.12v.

I thought video was +/-1v either side of 0v.

I find it a little odd that all are between 1v and 2v, except one, at
2.12v=
.=20

=20

Is 2.12v likely to be an issue?

=20

Thanks,
Tim.

__._,_.__



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<div class=3DWordSection1><p class=3DMsoNormal><span
style=3D'font-size:10.=
0pt;font-family:"Verdana",sans-serif'>Measuring with what?
Multimeter?<o:p>=
</o:p></span></p><p class=3DMsoNormal><span
style=3D'font-size:10.0pt;font-=
family:"Verdana",sans-serif'><o:p>&nbsp;</o:p></span></p><p
class=3DMsoNorm=
al><span
style=3D'font-size:10.0pt;font-family:"Verdana",sans-serif'>A
scop=
e is the only way to measure the voltage with any accuracy as the waveform
=
will confuse the meter.<o:p></o:p></span></p><p
class=3DMsoNormal><span sty=
le=3D'font-size:10.0pt;font-family:"Verdana",sans-serif'><o:p>&nbsp;</o:p><=
/span></p><p class=3DMsoNormal><span
style=3D'font-size:10.0pt;font-family:=
"Verdana",sans-serif'><o:p>&nbsp;</o:p></span></p><p
class=3DMsoNormal><spa=
n
style=3D'font-size:10.0pt;font-family:"Verdana",sans-serif'>Dave=E2=80=A6=
<o:p></o:p></span></p><div><p
class=3DMsoNormal><span lang=3DEN-US>---<o:p>=
</o:p></span></p><p class=3DMsoNormal><span
lang=3DEN-US>Very funny Scotty,=
now beam down my
clothes=E2=80=A6<o:p></o:p></span></p><p
class=3DMsoNorma=
l><span
lang=3DEN-US>---<o:p></o:p></span></p></div><p
class=3DMsoNormal><s=
pan
style=3D'font-size:10.0pt;font-family:"Verdana",sans-serif'><o:p>&nbsp;=
</o:p></span></p><div><div
style=3D'border:none;border-top:solid #E1E1E1 1.=
0pt;padding:3.0pt 0cm 0cm 0cm'><p
class=3DMsoNormal><b><span lang=3DEN-US>F=
rom:</span></b><span lang=3DEN-US> ukha_d@xxxxxxx [mailto:ukha_d@ya=
hoogroups.com] <br><b>Sent:</b> 24 November 2017
04:00<br><b>To:</b> ukha_d=
@yahoogroups.com<br><b>Subject:</b> [ukha_d] Voltage from
a CCTV camera<o:p=
></o:p></span></p></div></div><p
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>&nbsp; <o:p></o:p></p><div
id=3Dygrp-mlmsg><div id=3Dygrp=
-msg><div id=3Dygrp-text><div><p
class=3DMsoNormal><o:p>&nbsp;</o:p></p><di=
v><p class=3DMsoNormal>I'm wondering what voltage I should expect
on the vi=
deo signal from a conventional (i.e. not IP) cctv camera. The cameras all
h=
ave a 12v supply and the voltages across the pin and ground at the DVR BNC
=
end range around 1.18, 1.5, 1.7, 1.2 and
2.12v.<o:p></o:p></p></div><div><p=
class=3DMsoNormal>I thought video was +/-1v either side of
0v.<o:p></o:p><=
/p></div><div><p class=3DMsoNormal>I find it a little
odd that all are betw=
een 1v and 2v, except one, at
2.12v.&nbsp;<o:p></o:p></p></div><div><p
clas=
s=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p
class=3DMsoNormal>Is 2.12v=
likely to be an
issue?<o:p></o:p></p></div><div><p
class=3DMsoNormal><o:p>=
&nbsp;</o:p></p></div><div><p
class=3DMsoNormal>Thanks,<br>Tim.<o:p></o:p><=
/p></div></div></div><div><p
class=3DMsoNormal><span style=3D'color:white'>=
__._,_.__<o:p></o:p></span></p></div></div></div></div><div
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