Post Reply 
HP-41 and video interface 82163a / 92198a
04-24-2017, 03:44 PM
Post: #41
RE: HP-41 and video interface 82163a / 92198a
My 92198A manual is dated 1/84. Here's the 71B supplement.

.pdf  92198A Supplement .pdf (Size: 406.04 KB / Downloads: 16)
Find all posts by this user
Quote this message in a reply
04-24-2017, 05:24 PM
Post: #42
RE: HP-41 and video interface 82163a / 92198a
(04-24-2017 03:44 PM)Dave Frederickson Wrote:  My 92198A manual is dated 1/84. Here's the 71B supplement.

Thanks for sharing the '71 Supplement.

My pre-HP, Mountain Computer only branded manual is dated June 1983, Manual No. 11-MC00701A-02.

As it's pre-71 announcement, it includes model-specific content only for 41C, 75 and 85. I presume the HP-branded version is the same, with no '71 content except for the supplement?

--Bob Prosperi
Find all posts by this user
Quote this message in a reply
04-24-2017, 05:35 PM (This post was last modified: 04-24-2017 05:39 PM by Dave Frederickson.)
Post: #43
RE: HP-41 and video interface 82163a / 92198a
(04-24-2017 05:24 PM)rprosperi Wrote:  
(04-24-2017 03:44 PM)Dave Frederickson Wrote:  My 92198A manual is dated 1/84. Here's the 71B supplement.

Thanks for sharing the '71 Supplement.

My pre-HP, Mountain Computer only branded manual is dated June 1983, Manual No. 11-MC00701A-02.

As it's pre-71 announcement, it includes model-specific content only for 41C, 75 and 85. I presume the HP-branded version is the same, with no '71 content except for the supplement?

See manual on the HP41 DVD.
Find all posts by this user
Quote this message in a reply
04-25-2017, 02:00 AM
Post: #44
RE: HP-41 and video interface 82163a / 92198a
(04-24-2017 03:11 AM)Dave Frederickson Wrote:  I tried connecting the interface to the composite input on my monitor but experienced a lot of jitter. Marcus suggested I try a vintage monitor and that did the trick. I suspect that modern composite interfaces have a higher input bandwidth than the vintage CRT monitors. I would think that some sort of filter would eliminate the higher frequencies that are causing the jitter, but was unsuccessful finding something.

Dave

I was hoping to verify that the video interface was working before purchasing (and paying freight) for a composite monitor. From what you are saying, a composite to HDMI converter would work well enough to do just that.

Thanks!

Mark Hardman

Ceci n'est pas une signature.
Find all posts by this user
Quote this message in a reply
04-25-2017, 03:43 AM
Post: #45
RE: HP-41 and video interface 82163a / 92198a
(04-25-2017 02:00 AM)Mark Hardman Wrote:  I was hoping to verify that the video interface was working before purchasing (and paying freight) for a composite monitor. From what you are saying, a composite to HDMI converter would work well enough to do just that.

I tried a converter, too, and it to exhibited jitter, but it'll verify whether or not the interface is working. If the interface is good I have a 14" National NL-214C you can have.

Dave
Find all posts by this user
Quote this message in a reply
Post Reply 




User(s) browsing this thread: 1 Guest(s)