In debugging my DECtape interface lashup, I found that one of my head
has two open windings. Specifically, one channel has an open 'ground'
with the other two lines apparently the full winding of the channel.
The second channel failing has no continuity between any of the three
lines. I have
"Maciej W. Rozycki" wrote:
>On Sat, 5 Feb 2022, Peter Coghlan via cctalk wrote:
>
> > > This PSU seems to have been used across various Cisco devices and I had
> > > one fail several years ago in a WS-C1202 Ethernet/FDDI switch, also
> > > having
> > > suffered from leaking caps. Back then RS
These A/D systems use methods to isolate the sensitive analog signals
from the electrical noise and ground plane of the computer. Typically a
differential input is standard, so you will probably need wire up two
inputs.
If this is your first time with A/D, suggest you toggle in some code to
I just took another look at the AXV11 board. The A/D module has a
diagram glued on top which shows the block functions of the device. If
you look close the pin numbers are listed where signals are brought out
to the 36pin connector that plugs the module into the host board.
I may be able to in
Yes, I am putting 1 into the CSR to start the conversion and I do get a
200(8) indicating that the conversion is complete. I wonder if this
means the A/D chip is OK but something else, like the multiplexer chip
or gain amp is fried.
On 2/6/2022 12:33 PM, Jerry Weiss via cctalk wrote:
Are you
Yes, I have a couple of those and they are very close to the AXV11-C,
except for the D/A. They have a similar method of working. The A/D
modules look 'identical' but I am suspicious that there are variations
of these modules that aren't readily apparent.
On 2/6/2022 12:26 PM, Nigel Johnson
Are you triggering an A/D conversion via the CSR or external signal?
Then check the A/D done bit.
See EK-AXV11-UG-02 Chapter 4.
Jerry
On 2/6/22 11:20 AM, Douglas Taylor via cctalk wrote:
I have one of these and would like to use it, however it appears to
only partially work. Here is wha
Now that I have thought a bit more, I think it was the DT2762
The board was made by Data Translation. There is an identical board
sold by them, in the DT2x6x series but I can'r remember the exact number.
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the op
The board was made by Data Translation. There is an identical board
sold by them, in the DT2x6x series but I can'r remember the exact number.
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: tilbury2591nw.john...@ieee.org
On 20
I have one of these and would like to use it, however it appears to only
partially work. Here is what I have found that works and what doesn't:
1. CSR and DBR are present and operational.
2. Jumpers set to 'factory'.
3. D/A portion works, can deposit codes in ODT and see voltages out on
DAC
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