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Questions tagged [error]

An error is the unwanted operation of an electrical / electronic component or system resulting from malfunctions. Use this tag if you have something that doesn't work as it should, or doesn't work at all.

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1answer
38 views

Compiler error when using HAL functions for I2C communication

I am using the board STM32F3 and I am trying to establish I2C communication between the microcontroller and the accelerometer LSM303DLHC by using the HAL functions. This is the code: ...
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0answers
39 views

SRAM problem with reading the value I stored, “random” behavior

I've now spent quite a few hours of researching and trying to identify the error, but no luck for me. I'm making a very similar circuit to James Bates RAM video (schematic here: James Bates RAM ...
1
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1answer
40 views

DC Gain too low at higher voltages

I am having an issue with DC gain for a non-inverting op amp circuit. All I am trying to do is double the voltage from two DAC outputs (DAC range is 0 to 5V and I want it to be ~0V to 10V). The DAC ...
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0answers
18 views

Steady state error due to disturbance

I was trying to solve a question from the 2004 GATE IN paper, I solved it this way, Now, the book is giving a different solution, I'm pretty sure my way is correct since they pulled the "standard ...
-2
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1answer
52 views

lt Spice simulation duplication error

I am new to using LT Spice. I have imported an operational amplifier. When I try to run a simulations response I received an error (shown in the screenshot.) It says Netlist Error: Duplicated ...
1
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1answer
56 views

PSPICE graphs work separately for subcircuits, wrong when combined?

I'm working on a pulse generation circuit that will be used to drive an ultrasonic transducer. The following circuit is giving an unexpected output. It might look complicated, but really it can be ...
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2answers
43 views

AT90CAN128 Random Malfunctions

I've got the following Situation. An AT90CAN128 connected to a LCD,multiple Buttons, Sensors,LED's and engines. Shown on the LCD are the Sensor Values and a Menu you can go through with a rotary ...
0
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1answer
86 views

Error (10028): Can't resolve multiple constant drivers for net “rf[7][XX]” at registerfile8x32.v

Hello Im making a register file 8x32 in verilog, the sim looks good but when I compile on quartus it makes Error (10028): Can't resolve multiple constant drivers for net "rf[7][31]" at ...
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1answer
36 views

R&S Spectrum Analyzer Voltage Measurement Error

I just got FPC1000 spectrum analyzer that goes from 5 kHz to 1 GHz. I didn't had any spectrum analyzer experiences before this one so everything is very new to me. Among few things that I don't ...
1
vote
1answer
47 views

Accidentally Pasted Beyond Origin in Altium

I'm new in Altium and I accidentally pasted some pads and components(the ones at the bottom corner) from another pcb file but I wasn't aware of it at first because it didn't show on the sheet on the ...
0
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2answers
73 views

Cleaning up GND/PWR-plane air wire errors in EAGLE + bonus questions

So I've just finished up my first complete PCB board. The layout is 4-layer based, set up as ((1*2)*(15*16)) ---not sure if it should be ((1+2)*(15+16)) or ((1*2)+(15*16)) instead, please advise--- ...
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1answer
79 views

What is RSS Error?

I was reading through documentation for an INA219 sensor from TI (http://www.ti.com/product/INA219), and they have a chart for RSS Error. What does RSS stand for?
2
votes
2answers
44 views

Random Error Waiting Time

Suppose that you have a design that has had an error after running 14, 18, and 20 hours. You're not exactly sure what is causing the error, but you make a change to the design that MIGHT fix it. ...
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0answers
44 views

Impedance magnitude and phase error - Mathematical formula

Today I read a paper on which there are the terms magnitude error and phase error relative to a comparison between measurements performed with a biosensor and with a benchtop electrochemical impedance ...
0
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2answers
132 views

SystemVerilog: Race condition in memory

Hello I'll be brief because my English isn't good thank you for your patience I'm working on a system that drives this memory: ...
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3answers
196 views

Altium track width DRC error on corners

I just ran the DRC check in Altium for my PCB and I get errors on trace width for every trace segments on the board. What is the reason for this ? It generated thousands of errors even tho all the ...
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0answers
177 views

Altium Comma expected

I am working with an older version of Altium (V09). I have this popup every time I want to move a part in a PCB doc. I have the sch and the pcb open and I changed some parts in the sch and to ...
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0answers
100 views

Debug Anet A8 Clone 3D-Printer Mainboard (Chinese) Thermistor Temperature Error?

I have a chinese clone 3D-Printer (CTC i3 proB MK2A) and successfully printed several prints, until I had a filament jam and the nozzle was ruined etc. Now, the printer shows 270° hotend temperature ...
2
votes
1answer
197 views

Error setting up timer HAL PeriodElapsed Callback STM32F334R8T

I'm trying to create a microsecond delay function using the STMs regular timer. I wanted to set a timer to fire an interrupt every microsecond and then increment a variable in the call back function ...
0
votes
1answer
46 views

Adding to a sum variable produces a “reals can't be synthesized” error in verilog

First, a disclaimer that this is my first time using verilog and I don't really know anything. My code is as follows: ...
0
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0answers
15 views

linearly graded doping profile in Sentaurus

How to define a linearly graded doping profile in Sentaurus? It has options of Gaussian function and error function but how to define a linearly graded profile with a decay rate of 5nm/dec?
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0answers
36 views

Measuring small strain with strain gauge, how nullify errors?

I have a similar circuit like https://www.egr.msu.edu/classes/ece480/capstone/spring15/group05/uploads/4/7/5/1/47515639/ece_480_app_note_justin_bauer.pdf 2. page bottom Wheatstone bridge: 2x 350 ohm ...
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0answers
49 views

Realtek 8711AF : Hardfault error

I have a Relatek ameba RTL8711AF board. I am testing on given Realtek Ameba SDK_without_NDA. I install firmware in proper way. But after I plug Realtek ameba RTL8711AF Board then I got a following ...
0
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1answer
56 views

2nd order high pass filter PSPICE error

I'm working on designing a 2nd order sallen key high pass filter in PSPICE for a school project, but in subthreshold with resistors replaced with OTAs (transamp). Schematics shown in figures below. ...
0
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1answer
115 views

Multi driver error in VHDL

Hi I am writing a code for image processing that includes a Ram to/from which data will be written and read. However, I am getting 15 errors like the one below. ...
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0answers
58 views

PSpice convergence error

I am designing a switching voltage regulator and i have been running into convergence errors with opamp U10. I will be using a comparator when i create the circuit on a breadboard. I am wondering what ...
0
votes
1answer
97 views

Gain of proportional Controller with distubance \$sin(10t)\$

The diagram below represents the position of ocean oil platform system which use the proportional controller with gain \$k\$. The output \$x(s)\$ is the platform deflection regards the position ...
2
votes
2answers
40 views

Systematic high frequency error in TF measurements

Full disclosure, I've asked a very similar question before which didn't have much success as it was too specific. However I want to try again by restricting the scope of the question. Scenario I'm ...
3
votes
3answers
333 views

getting error from for loops in vhdl

Hi I am trying to use 2 nested for loops in vhdl but I get this error. [Synth 8-561] range expression could not be resolved to a constant [318] I do not understand why this code is not working since ...
0
votes
1answer
325 views

syntax error near if in VHDL

Hi I am trying to write a code in VHDL and I get syntax error near "end" / "if". I am not very good at nested if statements and have not figured out how to close those if statements in what order due ...
0
votes
1answer
167 views

LTSpice arbitrary voltage block (bv) simulating full wave bridge rectifier

I'm creating a LTSpice simulation. I need a voltage source that looks like the output of a full wave bridge rectifier. The simulation includes a sine voltage source (voltage block) line to generate ...
-4
votes
3answers
122 views

Altium designer PCB error

I am having an issue while updating my schematic in Altium PCB. There are two errors as shown in attached image. If anyone can please elaborate on how to solve these issues, I will be highly thankful.....
1
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1answer
459 views

Character '0' used but not declared for type std_logic_vector??? (Algorithm state machine)

After adding the counter to my VHDL code am getting the following error: Error (10316): VHDL error at ASM.vhd(31): character ''0'' used but not declared for type "std_logic_vector" Thank you Code: <...
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0answers
53 views

ORCAD 16.6 ERROR

Hello I just imported LM5175 model from TI and used it for simulation however I am getting an error as ORPSIM-15108 Subcircuit LM5175_TRANS used by X_U1 is undefined Can someone help me on this
-1
votes
1answer
172 views

Error: illegal Verilog output port specification

I am having problems with my verilog test bench. Every time I try to run it, I get the error in the title above for my four switch registers. I have searched this question numerous times but I cannot ...
0
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0answers
57 views

Low-pass filter voltage difference

I did an experiment on a low pass filter, with an op-amp and cutoff frequency of 10 Hz. I was measuring the output voltage when the frequency was less then the cutoff frequency I had 4.18 V with input ...
0
votes
1answer
350 views

Error: can't resolve multiple constant driver (VHDL)

trying to solve this error but none of it work. It says Error (10028): Can't resolve multiple constant drivers for net "current_state.S4" at wood_detector.vhd(23) ...
0
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1answer
31 views

Max allowed measurements error

Since it's not possible to know with 100% accuracy about what's going on in a circuit and its components, and I have to trust my multimeter on measurements, what's the usual approach to managing ...
0
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0answers
48 views

PSOC 4 Bootloader will not work when P4[0] and P4[1] Connected to I2C bus

I have been desparately juggling the pin allocations on this project in the hope of freeing up the VREF pin, and thought I had managed to do so. Previously my system was successfully transmitting over ...
9
votes
2answers
874 views

Bad Measuring Equipment?

I was measuring the current through current mirror, when I experienced a problem. But first, I want to mention that I measured this with two ammeters of same manufacturer and same model (Mustool MT826 ...
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0answers
208 views

Lab Power Supply - apparent “lost current”

I built the power supply shown on the schematic. It looks like it is "working a treat", but not really. The CV mode is OK, however the CC mode is causing a nightmare. I started the testing with a ...
6
votes
1answer
243 views

DAC to ADC errors

I am testing my setup of MCP4725 DAC connected to MCP3221 ADC. DAC's output is connected to ADC's input. I'm measuring the difference between set values in DAC and measured values in ADC and I'm ...
1
vote
2answers
87 views

stop mask error remains after deleting offending text in eagle

I ran the DRC for dirty pcbs, and it's giving me these stop mask errors for values assigned. In this particular example, It's D1 with a 4148 label. In the first image, you can see the 4148 value ...
4
votes
1answer
429 views

How to null op-amp offset in current source?

I have a current source circuit with an op amp and pass transistor. The simplified schematic is this: simulate this circuit – Schematic created using CircuitLab I would like the output to be ...
1
vote
1answer
185 views

Problem with Constant Current power supply

I built this schematic recently. The Constant Voltage mode works as a treat, stable as it needs to be. When I insert the LM311 comparator, the circuit works fine for about 30 seconds, then something ...
1
vote
0answers
155 views

Syntax error(10500) when compiling VHDL code: near text “when”, expecting “:”

I want to compile my code but I get multiple errors surrounding a statement which is repeated several times in the architecture. The error message (Error 10500) says a ":" is missing near "when" but ...
0
votes
1answer
348 views

Syntax error near variable and range in VHDL

I learnt Java last year and started to learn VHDL and implementation on BASYS3 this year. I am just trying to display numbers on the seven segment starting from 0 and each time a push button is pushed ...
2
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2answers
137 views

Altium - Back-Annotation Error

I have re-annotated PCBs and back-annotated the schematics countless times before and never saw this problem. I first make sure that my PCB and my schematic are synchronized and up-to-date. In the ...
0
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1answer
5k views

LTspice “could not open library file” for a third party amplifier

I'm trying to use INA129 in LTspice. So first in TI's page I go to Tools & software and under the model download the file called: INA129 PSpice Model (Rev. B).zip In this zip file there are files ...
5
votes
3answers
1k views

How to compensate gain and offset errors

I have an analog circuit which has an offset error as well as an gain error. I can measure the analog output of the circuit and I am able to manipulate the gain of the circuit by means of a factor <...