Recent Posts

1

Test Equipment / Re: TinySA Ultra launched

« Last post by KungFuJosh on Today at 11:15:53 pm »

I vote @shapirus reports the bug, he found it, I was just confirming it.

Here's a clean sweep for comparison with the same setup, but using the SDG2122X:



I wish Siglent would have a full frame rate option for the web console.

2

Test Equipment / Re: Siglent SDS3000X HD and upgraded SDS1000X HD

« Last post by temperance on Today at 11:07:24 pm »

I just tried the new software released by Siglent sigscopelab.

But this software seem to require some work.

-Setting the time base cycles the time base on the remote device between 1 s, 2 s, 10 ns instead of following the required setting.
-The application frequently freezes, a command window appears and disappears.

I didn't do any further tests.

Also, this is a free version. I hope they are not planning to release sub standard node locked pay ware like other brands do.

3

Projects, Designs, and Technical Stuff / Re: Vacuum Fluorescent Display Driver

« Last post by bostonman on Today at 10:48:53 pm »

I scoped G1 and it had many more pulses than G2 and G3, so I moved forward with replacing the chip.

The good news: the new chips seems to have fixed it. Can’t say for sure, but I didn’t see digit twelve have the lit segment. I wanted to see if it displayed AUTO TRIG or AUTOOTRIG (somewhat of a true test), tried pushing the menu options, accidentally got it in count mode where it was counting pulses, so I turned off power and repowered it to get the default stage.

The bad news: when it repowered, the display may have come on for a split second (I wasn’t staring at it) and vanished. LEDs light and got a brief moment I saw a faint sign of life on the display where it showed something.

I didn’t move anything, nothing was near it to short, etc… Just a simple repower.

FL1 and FL2 measure 5.8v DC, so I’m assuming the supply blew, but don’t know why.

4

Test Equipment / Re: Siglent SDS6000L 2GHz, 4-8 Ch Low Profile Digital oscilloscope serie

« Last post by tautech on Today at 10:47:31 pm »

New firmware for SDS6000L models.

Version： V1.0.7.8
98 MB
https://int.siglent.com/upload_file/zip/firmware/Oscilloscope/SDS6000L_1.0.7.8_EN.zip

Release notes
1. Fixed several bugs
a) Cannot exit from Bode plot in some case
b) Cannot detect active probes correctly when the probes are connected at power-on
c) “Set to 50% level” takes the scope frozen in some case
d) Sample rate is displayed incorrectly after reboot from Fixed Memory Length mode

5

FPGA / Help on translate schematics to Verilog.

« Last post by caius on Today at 10:46:27 pm »

Hi,
I need to translate into Verilog some KiCad schematics and came across the attached symbols.Is the first a tristate buffer and the latter two AND gates tied to a NOR gate?How to code them in Verilog (well, I use Quartus schematics for now...)?Thanks in advance

6

Security / Re: Microsoft repackages apps with a telemetry .NET wrapper

« Last post by radiolistener on Today at 10:38:19 pm »

Telemetry is fine

No, it's not fine. It's a big danger and large security hole. There is no good purpose for telemetry, it is needed only for malicious purposes, like collecting your private data, selling it and share to ad spammers, scammers and criminals, all without your consent.

You know how they doing it, first they collecting your private data and convince you that this is completely 100% safe, they said that it will be stored it in a very secure and super duper protected storage facility. Then one day it will be stolen by some anonymous hackers and appears on paid black web database. And they said "oh sorry, shit happens, we will work better to avoid it in future"... So, all your private data appears available for all criminals all around the world and none responsible for that...

Some of them even don't hide that they collecting and share your private data, they just said that this data will be collected and shared anonymously, but they don't tell you that it will include a lot of unique ids which allows to de-anonymize your private data very easily.

7

General Technical Chat / Re: ultra sonic transducers

« Last post by pete g on Today at 10:29:36 pm »

hi and thanks for your suggestion. i have found some circuits that i'am pursuing. i've tried several so far, to no avail. several more to go. the problem is to get the range i need.

8

Microcontrollers / Re: Routines to convert binary to BCD in C code

« Last post by cv007 on Today at 10:29:25 pm »

but with an 8-bit microcontroller you have to do the job differently.

Differently, but can still use the tools already in the toolbox.

uint64_t v = readCount();
uint32_t vH = v / 1000000000u;
uint32_t vL = v % 1000000000u;
//skip leading 0's, avr lu is uint32_t
if( vH ) print( "%lu%09lu\n", vH, vL ); else print ( "%lu\n", vL );

9

Repair / Re: Tektronix deprecated free trial options

« Last post by colorburst on Today at 10:27:15 pm »

The TDS family consists of dozens and dozens of models. What scope, specifically, are you talking about here?

10

Beginners / Re: The old "Replace blue LEDs with red LEDs" 7 segment question (74HC595)

« Last post by David Hess on Today at 10:25:01 pm »

When I dimmed LEDs driven by 74HC595s, I controlled the LED's supply voltage which was separate from the logic supply.

I doubt the 74HC595s are failing.  The limit for them is the GND and VCC pin current which should not exceed the datasheet value.