Re: Attenuator symbol



Joerg wrote:

Phil Hobbs wrote:
a7yvm109gf5d1@xxxxxxxxxxx wrote:
On Apr 16, 3:26 pm, Bob <StephensDigi...@xxxxxxxxx> wrote:
On Apr 16, 11:52 am, Rich Grise <r...@xxxxxxxxxxx> wrote:

On Wed, 16 Apr 2008 11:34:31 -0700, a7yvm109gf5d1 wrote:
What's the schematic symbol for a digitally controlled electronic
attenuator? As opposed to mechanically controlled vane attenuators, or
switched resistors, etc.. or a VVA.
A box with input and control logic on one side, and output on the
other.
Or, you could put the control logic on the top or bottom.
Hope This Helps!
Rich
Here's a picture of
one:http://www.analog.com/en/prod/0,2877,AD5165,00.html

Eh, I was thinking more of a GaAs MMIC DC-13GHz attenuator... I'm kind
of a stickler for meaningful symbols.
I guess a block with ATT written in it will have to do.

The signal processing block diagram symbol for an attenuator is a
rectangular box with a resistor symbol in the middle (unconnected). I'd
probably use one of those with a diagonal arrow through it.

IMHO text is better than a symbol, else it quickly becomes obscure. Last
month I drove a truck in Europe. A sign showed up with a truck on there
and an orange box on it. Scratched my head, asked my (European)
passenger. His answer: "I dunno either". Maybe this road was off limits
for truckers carrying orange juice.

A diamond rather than a box (i.e. rotated by 45 degrees) ?

The orange diamond is supposed to refer to hazardous materials being
transported.

Graham

.

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