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On 2018-11-01 11:06 AM, nigel adams wrote:

Dear Friends of the supreme knowledge,

I have a couple of the single/double FDD/HDD variations of this style of unit.

My question is if anyone knows if they can be used with the HP85 computer...?

What do I need, is there any special s/w required and if so does anyone know where to source it.

Essentially I want to use these in place of the little tape drives internal to the HP85 which are past their best.
All help advice welcome..
Regards

Nigel

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Paul Berger
Sent: 31 October 2018 01:09
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 9122C & 9122D floppy drive units - adapt to use a contemporary (3.5" 1.4MB) diskette drive?

Further to my previous comments the two drive I modified to work on a
9122C are a Panasonic JU-257A606P and a YE Data YD-702D-6037D.? One
thing you may encounter there are later versions of both of these drives
that have less configuration options and will not be suitable.? On the
YE Data drive I had to put a wire jumper on the board to get all the
signals out that are required, I believe I may have had to do that with
the Panasonic drive as well.? I happened to have several 1.44 diskette
drives handy to experiment with.? You will probably have better luck
with older drives, it seems a lot of the more recent ones are tailored
for PC and have little in the way on configuration options.? The HP
drives also have the power integrated into the signal cable so I made up
a little interposer to go between the cable and the drive to break out
the power and also to remap some of the pins.

The service guide for the 9122C can be found at

and it contains a pinout of the drive cable connector which can help
guide you to adapting a drive.

While I know nothing about the instrument you are trying to connect to,
it may be that it is trying to format the diskettes at 256 bytes /
sector and if the diskettes have been formatted differently before it
may take a few tries before it is successful, bulk erasing the diskette
first can be helpful for this.

Paul.

On 2018-10-30 7:52 PM, Paul Berger wrote:

With a little work certain 1.44 drives can be made to work in a 9122C
the usual stumbling block is the controller in the 9122 wants to see
the ready signal, but I did manage to make a couple drives work, but
don't have the models handy.

The 9122D is a different story, it uses 720K drives that turn at 600
RPM and unlike most other 3.5 diskette drives.? There where two
versions of drives used. The earlier models used a full high drive
with a square eject button on the bottom right of the drive, about the
only place you can get replacements for this drive is from other
9122S/D units or there where also a couple disk/ diskette combo units
that used these drives.? The newer version is a half high drive with a
rectangular eject button at the bottom right, this drive was used in a
lot of HP equipment so replacements are easier to find.? One of the
prevalent problems with these drives and especially the full high
versions is lubricants used on the load/eject mechanism dry and
becomes gummy and the diskettes do not load or eject properly and it
is dangerous because the upper head may not retract properly and if
you pull out the diskette when it is like this the upper head will
come out with it.? I would strongly recommend you open the units and
do a general inspect, clean and lube.

Paul.

On 2018-10-30 7:39 PM, David Feldman via Groups.Io wrote:

I ended up with both HP 9122C and 9122D (dual floppy drive) units.
Both are recognized by my 8753 network analyzer (up to the point that
setting incorrect GPIB address and setting incorrect disc/volume
number has the expected error message results), all four drives make
familiar sounds during power-up and normal operation, however, only
one of the drives (in the 9122C) can read a diskette (list files on
the media), and none can write or initialize diskettes. I am
uncertain whether the onboard controllers are fully functional, but
both appear complete and physically undamaged.

My question is this - can a contemporary (i.e., a 3-1/2" 1.4MB floppy
drive) be adapted for use in either of these units? The 9122C uses a
single (0.05" pitch) ribbon cable between the drives and the
controller board; the 9122D has a somewhat narrower (0.05" pitch)
ribbon cable and a 4-pin power connector. None of the connectors are
identical to those used in contemporary floppy drives. I haven't
looked for/at service documentation (yet). My last exposure to floppy
drive equipment (at engineering, hardware and firmware level) was in
the mid-late 1970s (!), so I'd not be adverse to a modest engineering
project if there's a sign that this sort of thing has been
successfully attempted in the past.

My other question - do you happen to have any drives (of either type)
you'd be willing to part with?

Thanks,

Dave

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Paul Berger
Sent: 31 October 2018 01:09
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 9122C & 9122D floppy drive units - adapt to use a contemporary (3.5" 1.4MB) diskette drive?

Further to my previous comments the two drive I modified to work on a
9122C are a Panasonic JU-257A606P and a YE Data YD-702D-6037D.? One
thing you may encounter there are later versions of both of these drives
that have less configuration options and will not be suitable.? On the
YE Data drive I had to put a wire jumper on the board to get all the
signals out that are required, I believe I may have had to do that with
the Panasonic drive as well.? I happened to have several 1.44 diskette
drives handy to experiment with.? You will probably have better luck
with older drives, it seems a lot of the more recent ones are tailored
for PC and have little in the way on configuration options.? The HP
drives also have the power integrated into the signal cable so I made up
a little interposer to go between the cable and the drive to break out
the power and also to remap some of the pins.

The service guide for the 9122C can be found at

and it contains a pinout of the drive cable connector which can help
guide you to adapting a drive.

While I know nothing about the instrument you are trying to connect to,
it may be that it is trying to format the diskettes at 256 bytes /
sector and if the diskettes have been formatted differently before it
may take a few tries before it is successful, bulk erasing the diskette
first can be helpful for this.

Paul.

On 2018-10-30 7:52 PM, Paul Berger wrote:

With a little work certain 1.44 drives can be made to work in a 9122C
the usual stumbling block is the controller in the 9122 wants to see
the ready signal, but I did manage to make a couple drives work, but
don't have the models handy.

The 9122D is a different story, it uses 720K drives that turn at 600
RPM and unlike most other 3.5 diskette drives.? There where two
versions of drives used. The earlier models used a full high drive
with a square eject button on the bottom right of the drive, about the
only place you can get replacements for this drive is from other
9122S/D units or there where also a couple disk/ diskette combo units
that used these drives.? The newer version is a half high drive with a
rectangular eject button at the bottom right, this drive was used in a
lot of HP equipment so replacements are easier to find.? One of the
prevalent problems with these drives and especially the full high
versions is lubricants used on the load/eject mechanism dry and
becomes gummy and the diskettes do not load or eject properly and it
is dangerous because the upper head may not retract properly and if
you pull out the diskette when it is like this the upper head will
come out with it.? I would strongly recommend you open the units and
do a general inspect, clean and lube.

Paul.

On 2018-10-30 7:39 PM, David Feldman via Groups.Io wrote:

I ended up with both HP 9122C and 9122D (dual floppy drive) units.
Both are recognized by my 8753 network analyzer (up to the point that
setting incorrect GPIB address and setting incorrect disc/volume
number has the expected error message results), all four drives make
familiar sounds during power-up and normal operation, however, only
one of the drives (in the 9122C) can read a diskette (list files on
the media), and none can write or initialize diskettes. I am
uncertain whether the onboard controllers are fully functional, but
both appear complete and physically undamaged.

My question is this - can a contemporary (i.e., a 3-1/2" 1.4MB floppy
drive) be adapted for use in either of these units? The 9122C uses a
single (0.05" pitch) ribbon cable between the drives and the
controller board; the 9122D has a somewhat narrower (0.05" pitch)
ribbon cable and a 4-pin power connector. None of the connectors are
identical to those used in contemporary floppy drives. I haven't
looked for/at service documentation (yet). My last exposure to floppy
drive equipment (at engineering, hardware and firmware level) was in
the mid-late 1970s (!), so I'd not be adverse to a modest engineering
project if there's a sign that this sort of thing has been
successfully attempted in the past.

My other question - do you happen to have any drives (of either type)
you'd be willing to part with?

Thanks,

Dave

On 10/31/2018 9:37 PM, Dan Rae wrote:

On 10/31/2018 6:32 PM, hardyhansendk via Groups.Io wrote:

Hi
Have uploaded it to didiers

Regards
Hardy

Thanks Hardy!
Dan

On 10/31/2018 9:37 PM, Dan Rae wrote:

On 10/31/2018 6:32 PM, hardyhansendk via Groups.Io wrote:

Hi
Have uploaded it to didiers

Regards
Hardy

Thanks Hardy!
Dan

On 10/31/2018 6:21 PM, Szabolcs Szigeti wrote:

Hi,

I just managed to get a 3325b for a very good price. I still have to investigate a Fail 026, but otherwise it is in a nice shape and seems to work in general.

It has Opt 1, the oven oscillator, but lacks Opt 2 the high voltage output, which would really be useful for me.

I was wondering if either some of you has one for sale (part no 03325-66508, same for the A and B model. Also I'm in Europe).

Or, go the hard way a build one. I could copy the original design but I pretty sure that some modern high voltage opamp could be used instead.
What do you think?

Szabolcs

On 10/31/2018 6:22 PM, Richard Coberly via Groups.Io wrote:

I have several dozen, some 9122C, others 9122D, that have been in my barn for many years. They were bought in one lot at a DRMO sale so their operational condition is unknown.? Anyone need any? I live in south central Pennsylvania.