[time-nuts] PicPlot GPIB to RS-232

Azelio Boriani azelio.boriani at screen.it
Mon Nov 14 12:13:04 EST 2011


I think this GPIB to RS232 is great if you only have one unit to talk to. I
have designed a similar interface with the ATMEL 89C52 but the drive
strength was enough only for one GPIB unit. With two or more units there
was problems to drive the bus with such a load. It is imperative to use the
correct bus drivers to have a complete interface (DS75160, DS75161 and
others) . The old VIC20/C64 GPIB interface had bus drivers (SN75160A,
SN75161A).
On Mon, Nov 14, 2011 at 5:59 PM, Chris Albertson
<albertson.chris at gmail.com>wrote:

> On Mon, Nov 14, 2011 at 8:37 AM, Bob Smither <smither at c-c-i.com> wrote:
> > John Miles wrote:
> >>>
> >>> -----Original Message-----
> >>> From: time-nuts-bounces at febo.com [mailto:time-nuts-
> >>> bounces at febo.com] On Behalf Of Bob Smither
> >>> Sent: Sunday, November 13, 2011 6:01 PM
> >>> To: Discussion of precise time and frequency measurement
> >>> Subject: [time-nuts] PicPlot GPIB to RS-232
> >>>
> >>> Hi List,
> >>>
> >>> Does anyone have experience with this GPIB to RS-232 converter:
> >>>
> >>>   http://www.webalice.it/hotwater/PicPlot.htm
>
>
> At first I was excited to see something like this, then I found the
> source code for the PIC was not available.   To bad.  It could have
> been great.
>
> --
>
> Chris Albertson
> Redondo Beach, California
>
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