Color vision for network techs

Grzegorz Janoszka Grzegorz at
Fri Aug 31 15:26:40 UTC 2012

On 31-08-12 16:15, Berry Mobley wrote:
> Do any of you do any color vision screening in your interview process?
> How do those of you with color vision impairments compensate? I'd never
> considered this until I was in one of our facilities with my son (who
> has limited color vision) and we had a discussion about the LEDs. He
> could only determine on/off - not amber/red/green on the equipment we
> had. I'm wondering if we need a color vision requirement (or test) as
> part of our hiring requirements.

I have troubles with orange-yellow-greenish colors. Red is fine, most of
greens as well. Already 15 years within the industry, several different
jobs. Nobody ever asked me, but I think I mentioned it to all potential
employers during interviews. For some of them it was funny or even
interesting but I don't think anybody considered it as my disadvantage.
Despite in most cases I cannot tell amber LED from yellow or orange one,
I don't think it affects my duties. Usually different colors have also
different luminosity, so shortly you learn characteristics of different
products, like that with Cisco amber is the "darker one".
I have also seen blades with broken LED's that had all the colors but
one (like 6704 port with green and no amber), so to be 100% sure one
should always check the console.

Grzegorz Janoszka

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