Re: resistor packs for terminating SCSI bus inside Exabyte 8020

2021-02-10 Thread Nigel Johnson via cctalk
All suppositions correct - (or was it suppositories ?) I got the SIP resistor packs today from Digikey.  I ordered 4608X-4-221/331L but what came was marked just 8x-4-221-331L Works fine, now Diloq SQ703 recognises the drive and built-in diags print a response. NetBSD recogised it as a TK50. Now

Re: resistor packs for terminating SCSI bus inside Exabyte 8020

2021-02-06 Thread Nigel Johnson via cctalk
On 2021-02-06 8:51 p.m., Glen Slick via cctalk wrote: > On Sat, Feb 6, 2021 at 4:33 PM Nigel Johnson via cctalk > wrote: >> I have some 4608X-104-221/331L currently in my digikey shopping basket - >> I will place order on Monday after I confirm that the two outside pins >> go to Vcc and Fss and th

Re: resistor packs for terminating SCSI bus inside Exabyte 8020

2021-02-06 Thread Glen Slick via cctalk
On Sat, Feb 6, 2021 at 4:33 PM Nigel Johnson via cctalk wrote: > > I have some 4608X-104-221/331L currently in my digikey shopping basket - > I will place order on Monday after I confirm that the two outside pins > go to Vcc and Fss and the six others go to signal pins on the bus. > I pulled the

Re: resistor packs for terminating SCSI bus inside Exabyte 8020

2021-02-06 Thread Nigel Johnson via cctalk
Thanks for that. Pity the people who post on ebay don't give close-ups of the resistor arrays! My serial is 530573 so it should be a later rev that will work with the cleaning cartridge. I have some 4608X-104-221/331L currently in my digikey shopping basket - I will place order on Monday after I

Re: resistor packs for terminating SCSI bus inside Exabyte 8020

2021-02-06 Thread Glen Slick via cctalk
On Sat, Feb 6, 2021 at 3:59 PM Nigel Johnson via cctalk wrote: > > I stand corrected, my 8200 has 3x 8-pin sip sockets! > > Nigel OK, that matches my two EXB-8200 that I just looked at, and also these images from eBay listings: https://i.ebayimg.com/images/g/rh0AAOSwSdFe3p7v/s-l1600.jpg https://

Re: resistor packs for terminating SCSI bus inside Exabyte 8020

2021-02-06 Thread Nigel Johnson via cctalk
I stand corrected, my 8200 has 3x 8-pin sip sockets! Nigel Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU Amateur Radio, the origin of the open-source concept! Skype: TILBURY2591 nw.john...@ieee.org On 2021-02-06 5:48 p.m., Glen Slick via cctalk wrote: > On Sat, Feb 6, 2021 at 1:26 PM N

Re: resistor packs for terminating SCSI bus inside Exabyte 8020

2021-02-06 Thread Nigel Johnson via cctalk
I agree.  None on Digikey.  The manual says 7-resistor 8 pin, which is impossible if one resistor on each pin goes to 5V and the other to Vss, but the sockets are actually 9-pin! If Chuck can give me a definite part number I will be on the way.  The controller says it specifically supports an EXB

Re: resistor packs for terminating SCSI bus inside Exabyte 8020

2021-02-06 Thread Chuck Guzis via cctalk
...and if a 9 pin SIP, the part number would be 4609X-104-221/331L. They're a bit harder to find. --Chuck

Re: resistor packs for terminating SCSI bus inside Exabyte 8020

2021-02-06 Thread Chuck Guzis via cctalk
I've got an 8200 here, but I'll have to open the enclosure to see. But if it's a 7 pin device, the part number would be a Bourns 4607X-104-221/331L. Digikey claims to have them in stock. --Chuck

Re: resistor packs for terminating SCSI bus inside Exabyte 8020

2021-02-06 Thread Glen Slick via cctalk
On Sat, Feb 6, 2021 at 1:26 PM Nigel Johnson via cctalk wrote: > > Hi all, I wonder if anybody has one with the terminators installed that > can read off the p/n for these SIPs > > The manual says they are 8-pin 7 resistor 220/330 ones, but that is not > possible! To put 7 resistor pairs to 220 an

Re: resistor packs for terminating SCSI bus inside Exabyte 8020

2021-02-06 Thread Jon Elson via cctalk
On 02/06/2021 03:25 PM, Nigel Johnson via cctalk wrote: Hi all, I wonder if anybody has one with the terminators installed that can read off the p/n for these SIPs The manual says they are 8-pin 7 resistor 220/330 ones, but that is not possible! To put 7 resistor pairs to 220 and 330 you need a

resistor packs for terminating SCSI bus inside Exabyte 8020

2021-02-06 Thread Nigel Johnson via cctalk
Hi all, I wonder if anybody has one with the terminators installed that can read off the p/n for these SIPs The manual says they are 8-pin 7 resistor 220/330 ones, but that is not possible! To put 7 resistor pairs to 220 and 330 you need a 9-pin, unless you have one resistor SIP for 220 and anothe