3 May
2008
3 May
'08
3:17 a.m.
HI,
I found this pack in a pile that I collected yesterday. It is a blue colour
(instead of the usual light grey), and has a label detailing expected read
voltages and times for inner and outer tracks on each surface.
Is it some sort of diagnostic disk?
Regards
Jim.
Please see our website: www.g1jbg.co.uk
3 May
3 May
4:51 a.m.
From: "Jim Beacon" <jim at g1jbg.co.uk>
Sent: Saturday, May 03, 2008 12:17 PM
To: "Classic computer list" <cctalk at classiccmp.org>
Subject: RL02K-RF pack
HI,
I found this pack in a pile that I collected yesterday. It is a blue
colour
(instead of the usual light grey), and has a label detailing expected read
voltages and times for inner and outer tracks on each surface.
Is it some sort of diagnostic disk?
Regards
Jim.
Please see our website: www.g1jbg.co.uk
Yes, I have one too. This is the text that I wrote on the RL02 page on my
site:
A special cartridge is the "Reference Disk" cartridge.
This cartridge has a clearly visible different color!
The disk is used in the alignment procedure of the RL02 drive.
Actually, it is not the alignment of the heads, because the RL01/RL02 drives
use an embedded servo system. You can align the heads with *any* normal
disk cartridge.
This "Reference Disk" cartridge is an amplitude test pack to check the read
amplifier, normally *not* needed.
See www.pdp-11.nl/peripherals/disk/rl-info.html (direct access, or browse
via the menu at the left side "peripherals -> disk -> RL01/RL02.
greetz,
Henk.
8:16 a.m.
On Saturday 03 May 2008 04:51, Henk Gooijen wrote:
--snip--
See http://www.pdp-11.nl/peripherals/disk/rl-info.html
(direct access, or
browse via the menu at the left side "peripherals -> disk -> RL01/RL02.
I wish I had discovered your site when I first got into RL0x drives years ago.
The pictures and technical information provide an excellent starting place
for anyone trying learn about and understand these "critters".
If you haven't yet worked on/with RL0x drives I highly recommend Henk's site
(link above).
Regards,
Lyle
--
Lyle Bickley
Bickley Consulting West Inc.
Mountain View, CA
http://bickleywest.com
"Black holes are where God is dividing by zero"
1:53 p.m.
HI,
I found this pack in a pile that I collected yesterday. It is a blue colour
(instead of the usual light grey), and has a label detailing expected read
voltages and times for inner and outer tracks on each surface.
Is it some sort of diagnostic disk?
This sounds like the 'amplitude test pack' that's mentioned in at least
one of the manuals. It's ueed, as you suspect, to check the head output
amplitdue.
Remember an RLxx doesn't need an alignment pack (it's an embedded servo
drive, you can align the heads on any pack).
-tony
5859
days inactive
5859
days old
3 comments
4 participants
participants (4)
-
ard＠p850ug1.demon.co.uk -
henk.gooijen＠hotmail.com -
jim＠g1jbg.co.uk -
lbickley＠bickleywest.com