RL02K-RF pack

[Henk Gooijen]

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.