Challenge

[hp41cx]

There is an error in the photo.
What is it?

[Lars B]

(12-25-2013 06:41 PM)hp41cx Wrote:  There is an error in the photo.
What is it?

Is it maybe the lack of oscilloscopes?

[cruff]

(12-25-2013 06:41 PM)hp41cx Wrote:  There is an error in the photo.
What is it?

The 9825B includes HPL, not Basic. The 41 is labelled as a 41CW and 512 K RAM, which isn't right even if the extended memory modules are in place, unless a 41CW is some modified version I haven't heard of.

[Thomas Klemm]

(12-26-2013 12:50 AM)cruff Wrote:  unless a 41CW is some modified version I haven't heard of.

There was also a HP41-CW with a 32k Rambox, based on a HP-41CV halfnut

[Paul Dale]

Why the TI-59?


- Pauli

[Mark Hardman]

The HP 82161A cassette drive is definitely not correct. Looks more like a 82162A Thermal printer to me.

Mark Hardman

[Gerson W. Barbosa]

HP 9825B
62 KB RAM.

Shouldn't it be 32K?

[hp41cx]

(12-26-2013 01:22 AM)Mark Hardman Wrote:  The HP 82161A cassette drive is definitely not correct. Looks more like a 82162A Thermal printer to me.

Mark Hardman

The winner is .... Mark Hardman !!!!

[hp41cx]

(12-26-2013 01:33 AM)Gerson W. Barbosa Wrote:  HP 9825B
62 KB RAM.

Shouldn't it be 32K?

"The 9825B replaced the 9825A in 1980. It came standard with 23K RAM and internally integrated ROMs for Strings, Advanced Programming, Plotters, General I/O and Extended I/O. The 9825T was also introduced in 1980. It came standard with 62K RAM, all of the ROMs of the 9825B, plus a built-in Systems Programming ROM."

[hp41cx]

(12-26-2013 01:14 AM)Paul Dale Wrote:  Why the TI-59?


- Pauli

Why not? ;-)

[hp41cx]

(12-26-2013 12:59 AM)Thomas Klemm Wrote:  

(12-26-2013 12:50 AM)cruff Wrote:  unless a 41CW is some modified version I haven't heard of.

There was also a HP41-CW with a 32k Rambox, based on a HP-41CV halfnut

RamDrive CMT with 512k Ram (HP-IL)

[Mark Hardman]

(12-26-2013 10:48 AM)hp41cx Wrote:  

(12-26-2013 12:59 AM)Thomas Klemm Wrote:  There was also a HP41-CW with a 32k Rambox, based on a HP-41CV halfnut

RamDrive CMT with 512k Ram (HP-IL)

Darn it! That's one more HP-41 variant I must add on the: To-Be-Acquired list.

Is there any way we could get a close up look at the markings on the HP-41CW?

Mark Hardman

[Raymond Del Tondo]

(12-26-2013 10:37 PM)Mark Hardman Wrote:  Is there any way we could get a close up look at the markings on the HP-41CW?

According to my former boss Wilfried Koetz from W&W the CW as standalone product was offered, but never officially sold, since all customers chose the CY.
There were customers who had their HP-41 upgraded with an internal 32K RAM box at W&W. However these calcs were not officially called CW.

The only "real" CW unit I had here for repair was one which looked like a CY, with turbo switch and CY logo, but only 32K RAM installed. The back side of the pcb was empty. That unit belongs to one of the CCD module programmers.

So it's very likely that the HP-41 unit on the pic is either an upgraded CV/CX , or maybe a CY without the proper W&W OS.

[Dave Frederickson]

The drives in the 9121 are those found in the later model 9122D/S and 9114B. The 9121 used the full-height drives like those found in the 9114A.

I'm trying to find something wrong with the DMM. The only thing I see is that the red lead is plugged into the LO terminal and the black into the HI terminal.

Dave

[Raymond Del Tondo]

So there could be more than one mis-labelled item on the pic;-)

[Dave Frederickson]

The 3468A is HP-IL, not HP-IB.

Dave

[Raymond Del Tondo]

and the 9121 disc drive uses different drive front panels (actually different drives) .
The one on the pic rather looks like a 9123, with the newer drive units;-)

[Dave Frederickson]

According to the image on hpmuseum.net, the 9123D doesn't have a power button on the front panel. I still say its a 9122D with a later date code.

Dave