DESQA Manual?

[Robert Jarratt]

Oh dear! My wife keeps telling me I don't look properly, now I can see the jumper block as plain as day. Sorry about that!

Regards

Rob

> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Glen Slick
> Sent: 14 March 2015 16:08
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: DESQA Manual?
> 
> On Sat, Mar 14, 2015 at 8:17 AM, Robert Jarratt
> <robert.jarratt at ntlworld.com> wrote:
> > I picked up a DESQA recently which seems to be configured for thinwire
> > rather than AUI. There is no external switch for it and I can't find a
> > manual to tell me how to swap it to AUI.
> 
> The M3127 DESQA boards that I have all have an obvious push button
> externally accessible next to the BNC connector and there are externally visible
> LED indicators adjacent to the BNC and AUI connectors to indicate which
> connector is active.
> 
> Those M3127 DESQA boards look like the version shown in the pictures for this
> eBay listing:
> http://www.ebay.com/itm/141321641194
> 
> It appears that there is an earlier version of the M3127 DESQA which does not
> have that externally accessible push button.
> 
> Does the M3127 DESQA board you have look like the version show in the
> pictures for this eBay listing?
> http://www.ebay.com/itm/221696083936
> 
> On that version it looks like there is a 10-way jumper block in the middle of the
> board and THINWIRE / THICKWIRE legends screened on the board next to the
> jumper block to indicate how it should be positioned to select the connector
> type. It looks like there are externally visible LED indicators adjacent to the BNC
> and AUI connectors to indicate which connector is active.