Part Number:LOG114EVM

Hi TI employees,

for a student project, i have to measure the resistance of wood over 8 decades as a function of moisture. Because of the high resistances and the logarhytmic behaviour of this material, i decided to use the Log114. I bought the Log114EVM and measured the input current as seen in figure 11 in the datasheet:

I used a 24V voltage source and the resistances had a range of 1MOhm to 1TOhm to simulate the wood resistivity. in addition, i changed R11 from 1MOhm to1GOhm on the EMV to get a higher ratio of I1 to I2.
I plotted the Vlogout and was a little bit surprised because of a non-linearity of the voltage as you can see in the next picture:

Do you have any idea why there is such a harsh notch at about 2.5 nA ? Is it a problem with the Log114 or did i choose the wrong measuring method? I checked my resistances, they seem to be correct.
I also simulated the EMV and there is no such problem.

Hope you guys can help me. If you need additional information, please let me know.

Kind regards
Felix

Part Number:TMS320C6748

Can someone pls guide me how to carry out finger print demo as well as face detect on the development kit , because i tried to run the demo code as per steps mentioned in the TI official video i.e., through tera term but i did not get any commands on the terminal window even after setting the baud rate.. pls suggest the steps to debug this loop hole and to carry out this demo test through tera term !!

Thanks !!

Part Number:ADS1274

Hi,

My name is Idan and I'm electronic engineer for the Israeli Aerospace Industry (IAI).

In my application (several thousand units in a multi sensors chain system) I need to measure very small input signal, almost effective 24 bits, from 3 different channels- simultaneously sampled (from ±3V, balanced differential, each output 0.15V to 3.15V, 1.65V for zero- see figure 1). In order to do that, I thought to use the ADS1274 24-Bit, 4-Ch, Simultaneous sampling, 24-Bit, Delta-Sigma ADC but in order to do that I need you to answer the following questions:

1.       According to Table 7 and Table 8 in the datasheet it is possible to use this device in a ~200SPS just by using 100kHz external clock (100k/512=195.3SPS- for High-Resolution mode) and the specification and the performance stays the same. Am I right? Just by using a different clock value?

2.       What is the effective bit resolution for this ADC (both for ~52kSPS and ~200SPS)?  How can I calculate it?

3.       Assuming that I'll use some High-Performance, Fully-Differential Operational Amplifier for driver the sigma delta ADC (such as OPA1632 or THS4521…), it is possible of using 3V reference to the ADC with 2.5V common mode (Vcom from the from amplifier, gain 1- see figure 2 for the ADC input signal after the first amplifier), right?

4.       What is the correct way to implement the first order anti-aliasing filter? (Between the output ADC driving to the input ADC I guess…). Where can I see some example to that implementation (maybe in some EVM schematic…)

Thanks(Please visit the site to view this file) a lot

Idan

Part Number:TM4C123GH6PM

Hello !

I have successfully implemented filter in KEil using cmsis dsplib.

Now, i am trying to implement fast rfft for 1024 real data.

I was able to successfully run example given for cfft in keil.

With this same project settings,I modified code to implement 1024 real fft. When i compiled code,it gives following error

.\ARMCM0_debug\arm_fft_bin_example.axf: error: L6047U: The size of this image (91344 bytes) exceeds the maximum allowed for this version of the linker

Pl. let me know how to work around this error.

My Main includes following code

arm_rfft_fast_instance_f32 fftInstance;

  arm_status status;
  float32_t maxValue;
    
    status = arm_rfft_fast_init_f32(&fftInstance,fftSize);

  /* Process the data through the rFFT/CIFFT module */
  arm_rfft_fast_f32(&fftInstance, testInput_f32_ppg,testOutput,ifftFlag);

  /* Process the data through the Complex Magnitude Module for
  calculating the magnitude at each bin */
  arm_cmplx_mag_f32(testInput_f32_ppg, testOutput, fftSize);

  /* Calculates maxValue and returns corresponding BIN value */
  arm_max_f32(testOutput, fftSize, &maxValue, &testIndex);

Thanks & Regards,

Neelima

Part Number:TMS320F28069M

Hi,I am working on a closed loop average mode controller for the buck converter.So i have 2 pi controllers(inner current ,outer voltage loops).Now my doubt is ,as my device is a floating point device,can i use floating point operation throughout the program for the controller calculations?if yes,please can someone tell me how to set the saturation limits for both inner and outer controllers?

what may be the reasons for using per unit math instead of float math.

Please suggest me some documents and any suggestions related to closed loop buck converter are always welcome.

Thanks

Part Number:OPA330

Hi All, 

can anyone please let me know, what is the absolute max differential voltage for the part OPA330AIDBVR .

As per the Figure 17 of the datasheet it appears the anti parallel diodes conduct 30uA at 0.8v but its not clear whether that is a stress ful condition?

thanks 

Part Number:TMDXIDDK379D

Hello everyone,

ive planned to buy two of the C2000 DesignDRIVE Development Kits and programm it with Matlab Simulink.

So now the Problem, or better, the question...
Is it possible, to connect two Boards the same time with one PC and controll every board from Matlab Simulink?
Or is it just possible to connect one board per one PC?

Best
Kai

Part Number:BQ76930

Hello,

we have a few PCBs with the short connections for a 7-Cell configuration done wrong. Instead of connecting VC8 & 9 to VC7, they are conncted to VC10.

In bqStudio with a AFE Cell Map setting of 0x00f7 evreything seems ok, on a first look.

But what about balancing? There are external N-Fets for balancing.

Is it neccessary to correct the pin-configuration, or is it possible to leave it as it is? If possible, are there any drawbacks?

Part Number:BQ78350-R1

In the Technical Reference Manual, 8.5 Power Mode Indication (PWRM), it reads:

• PWRM is High-Z (externally pulled high):
– bq78350-R1 is in NORMAL mode.
– bq78350-R1 is in SLEEP mode AND GaugeConfiguration[PWRMSleep] = 1.
– Once in SHUTDOWN mode, the device has no control over PWRM.
• PWRM is Low:
– bq78350-R1 is in SLEEP mode AND GaugeConfiguration[PWRMSleep] = 0.
– bq78350-R1 prepares to enter SHUTDOWN mode.

In our design the PWRM-Pin shall control a power switch for a host controller.

According to the above that seems possible, but just to be sure there are no states in which the controller is left switched on in SHUTDOWN mode of the bq78350:

Is there any way that the bq78350 enters this mode without prior tying PWRM low?

Part Number:DRV8308

Hello my friends.

Our company manufacture Black and white laser printer. DRV8038 have been designed in one of our printer with 40PPM to drive a BLCD motor. DRV8038 works in internal register mode from 120 three-hall commutation to 180 sine commutation automatically. DRV8038 have been normally drived its BLCD motor in obverse direction and inverse direction.

the question is that: When DRV8038 drive only some wheel gear with smaller moment of force, BLCD motor run faster. When DRV8038 drive wheel gear and fuser + roller with larger moment of force, BLCD motor run slower. When DRV8038 drive wheel gear and fuser + roller and cartridge with largest moment of force, BLCD motor run slowest. But the SPI register values are never changed.

Our company also have been applied some other motor module (a BLCD motor and its matching drivers) in our printer products, such as NEDIC, and never occur this. The motor module always run at the same speed with various moment of force. if moment of force is too larger to motor module, it will be stop but not become slow.

We hope DRV8038 can drive its BLCD motor reach to 40PPM, but not become slower and slower. Or maybe DRV8308 is not fit, please recommend match model.

This is the first time for our company to self-design motor driver with TI, we have not enough experience. Please help us. The internal register is config as follows. whether this configration have some errors or not?

// CTRL1 Register
G_CTRL1_REG.Address = 0x00;
G_CTRL1_REG.AG_SETPT = 9; //=1.5KHz (AutoGain = LOOPGAIN * fCLKIN / AG_SETPT)
G_CTRL1_REG.ENPOL = 0x0; //device active when ENABLE is high
G_CTRL1_REG.DIRPOL = 0x0; //normal direction when DIR is high
G_CTRL1_REG.BRKPOL = 0x0; //brake when BRAKE is high
G_CTRL1_REG.SYNRECT = 0x1; //enble Synchronous rectification for better speed control and higher efficiency
//G_CTRL1_REG.PWMF = 0x0; //SPEED=1500高速+PWMF=025KHz/40us:U-Duty(24V)=14.4us,U-120°=4.51ms faster
G_CTRL1_REG.PWMF = 0x1; //SPEED=1500高速+PWMF=050KHz/20us:U-Duty(24V)=7.00us,U-120°=4.77ms fast
//G_CTRL1_REG.PWMF = 0x2; //SPEED=1500高速+PWMF=100KHz/20us:U-Duty(24V)=3.26us,U-120°=5.33ms slow
//G_CTRL1_REG.PWMF = 0x3; //SPEED=1500高速+PWMF=200KHz/05us:U-Duty(24V)=1.20us,U-120°=7.76ms slower
//G_CTRL1_REG.SPDMODE = 0x0; //Clock frequency mode
//G_CTRL1_REG.SPDMODE = 0x1; //Clock PWM mode (PWMF有效 MOD120=有效 CLKIN无效)
G_CTRL1_REG.SPDMODE = 0x2; //Internal register PWM mode (PWMF有效 MOD120=有效 CLKIN无效)
G_CTRL1_REG.FGSEL = 0x0; //0:Use HALL_U to generate FG 1:Use XOR of all 3 Hall sensors 2:Use FG amplifier input 3:Use TACH input
//G_CTRL1_REG.BRKMOD = 0x0; //Coast when ENABLE is inactive (outputs 3-state)
G_CTRL1_REG.BRKMOD = 0x1; //Brake when ENABLE is inactive (outputs 3-state)
G_CTRL1_REG.RETRY = 0x1; //Automatic retry in case of fault

// ADVANCE Register
G_ADVANCE_REG.Address = 0x01;
G_ADVANCE_REG.ADVANCE = 33; //commutation timing behind versus Hall-signals (33/960*Hall_U period)

// COMCTRL1 Register
G_COMCTRL1_REG.Address = 0x02;
//G_COMCTRL1_REG.SPDREVS = 3; //003*2.56ms= 7.68ms minimum Hall_U periods from reach before LOCK to be set
G_COMCTRL1_REG.SPDREVS = 4; //004*2.56ms=10.24ms minimum Hall_U periods from reach before LOCK to be set
//G_COMCTRL1_REG.MINSPD = 50; //195*2.56ms=499.2ms minimum Hall_U periods from brake before LOCK can be set
//G_COMCTRL1_REG.MINSPD = 180; //180*2.56ms=460.8ms minimum Hall_U periods from brake before LOCK can be set
G_COMCTRL1_REG.MINSPD = 195; //195*2.56ms=499.2ms minimum Hall_U periods from brake before LOCK can be set

// MOD120 Register
G_MOD120_REG.Address = 0x03;
G_MOD120_REG.BASIC = 0x0; //permit 120°single/1-Hall or 180°sinusoidal commutation
//G_MOD120_REG.BASIC = 0x1; //force 120°standard/3-Hall commutation and disable ADVANCE function
//G_MOD120_REG.SPEEDTH = 0x5; //speed variation allowed across Hall_U periods while LOCK keeping set =6.25%
G_MOD120_REG.SPEEDTH = 0x6; //speed variation allowed across Hall_U periods while LOCK keeping set =12.5%
G_MOD120_REG.MOD120 = 3970;//smooth transition from 120°operation to 180°operation
//G_MOD120_REG.MOD120 = 4095;//SPEED=1500高速+PWMF=100kHz/10us:U-Duty(24V)=6.9us,U-120°=3.32ms
//G_MOD120_REG.MOD120 = 3048;//SPEED=1500高速+PWMF=100kHz/10us:U-Duty(24V)=5.1us,U-120°=3.32ms
//G_MOD120_REG.MOD120 = 2048;//SPEED=1500高速+PWMF=100kHz/10us:U-Duty(24V)=3.3us,U-120°=5.3ms
//G_MOD120_REG.MOD120 = 1048;//SPEED=1500高速+PWMF=100kHz/10us:U-Duty(24V)=1.4us,U-120°=15ms

// DRIVE Register
G_DRIVE_REG.Address = 0x04;
G_DRIVE_REG.LRTIME = 0x0;
G_DRIVE_REG.HALLRST = 0x0; //sets how many HALL_U cycles pass for each commutation counter reset. In other words,
//the commutation counter is reset every N HALL_U edges. Selections available are 1, 2, 4, and 8.
G_DRIVE_REG.DELAY = 0x0; //Config ADVANCE behind Hall-signals
//G_DRIVE_REG.DELAY = 0x1; //Config ADVANCE before Hall-signals
G_DRIVE_REG.AUTOADV = 0x0; //Disable automatic advance compensation
//G_DRIVE_REG.AUTOADV = 0x1; //Enable automatic advance compensation 转得快多了
G_DRIVE_REG.AUTOGAIN = 0x1; //Enable automatic gain compensation
//G_DRIVE_REG.ENSINE = 0x0; //select 120°single-Hall commutation (BASIC=0)
G_DRIVE_REG.ENSINE = 0x1; //select 180°sinusoidal commutation (BASIC=0)
G_DRIVE_REG.TDRIVE = 0x1; //=5us Predriver high-current drive time
G_DRIVE_REG.DTIME = 0x0;
G_DRIVE_REG.IDRIVE = 0x0; //=10mA Predriver output peak current
//G_DRIVE_REG.IDRIVE = 0x2; //=30mA 反转有时不对
G_DRIVE_REG.IDRIVE = 0x3; //=50mA Predriver output peak current
//G_DRIVE_REG.IDRIVE = 0x4; //=90mA all 120°commutation, error???

// SPDGAIN Register
G_SPDGAIN_REG.Address = 0x05;
G_SPDGAIN_REG.INTCLK = 0x3; //50MHz/2^3=6.25MHz
//G_SPDGAIN_REG.INTCLK = 0x5; //50MHz/2^5=1.5625MHz
G_SPDGAIN_REG.SPDGAIN = 0x007;//无效

// FILK1 Register
G_FILK1_REG.Address = 0x06;
G_FILK1_REG.HALLPOL = 0x0; //Hall signal logic levels are direct must=0
G_FILK1_REG.BYPFILT = 0x0; //Enble the filter that FILK1 and FILK2 configure
G_FILK1_REG.FILK1 = 1200; //Filter coefficient for pole frequency [100Hz~1600Hz] 1200=573.521Hz

// FILK2 Register
G_FILK2_REG.Address = 0x07;
G_FILK2_REG.FILK2 = 950; //Filter coefficient for zero frequency [2Hz~100Hz] 950=56.286Hz

// COMPK1 Register
G_COMPK1_REG.Address = 0x08;
G_COMPK1_REG.BYPCOMP = 0x0; //Enble the compensator that COMPK1 and COMPK2 configure
G_COMPK1_REG.COMPK1 = 300; //Compensator coefficient for pole frequency 300=142.3935Hz

// COMPK2 Register
G_COMPK2_REG.Address = 0x09;
G_COMPK2_REG.AA_SETPT = 0x0; //=3Hz (AutoAdvance = ADVANCE * fHall_U / AA_SETPT)
G_COMPK2_REG.COMPK2 = 600; //Compensator coefficient for zero frequency 600=35.537Hz

// LOOPGN Register
G_LOOPGN_REG.Address = 0x0A;
G_LOOPGN_REG.OCPDEG = 0x3; //Deglitch time for VFETOCP to trigger=5us / OCP deglitch time to ignore voltage spikes=5us
G_LOOPGN_REG.OCPTH = 0x3; //Protection threshold for VFETOCP(FET's drain to source overvoltage=1V for overcurrent protection)
G_LOOPGN_REG.OVTH = 0x0; //Protection threshold for VOVLO(VM overvoltage=29V) <?? 0=29V 1=34V ??>
//G_LOOPGN_REG.OVTH = 0x1; //Protection threshold for VOVLO(VM overvoltage=34V) <?? 0=29V 1=34V ??>
G_LOOPGN_REG.VREF_EN = 0x0; //VREG enabled only when ENABLE is active
G_LOOPGN_REG.LOOPGAIN = 100; //Sets the overall gain for the speed control loop
G_LOOPGN_REG.LOOPGAIN = 40; //Sets the overall gain for the speed control loop

Thks & Rgds

Part Number:CC3200MOD

Tool/software: Code Composer Studio

I am using CC3200 SDK 1.3.0's MQTT Client example, CC3200 works as a MQTT Client.

CCS version: 7.3.0.00019 

I try to connect with mqtt server m14.cloudmqtt.com but i get the message "Broker connect fail for conn no. 1".

/////////////

#define SERV/ER_ADDRESS "m14.cloudmqtt.com"
#define PORT_NUMBER 12530

/*Defining Publish Topic*/
#define PUB_TOPIC_FOR_SW3 "/TestMQTT"
#define PUB_TOPIC_FOR_SW2 "/TestMQTT1"

/*Defining Number of topics*/
#define TOPIC_COUNT 3

/*Defining Subscription Topic Values*/
#define TOPIC1 "/TestMQTT"
#define TOPIC2 "/TestMQTT1"
#define TOPIC3 "/TestMQTT2"

//////////////////

Host Driver Version: 1.0.1.11
Build Version 2.9.0.0.31.1.4.0.1.1.0.3.37
Device is configured in default state
Started SimpleLink Device: STA Mode
[WLAN EVENT] STA Connected to the AP: npllab , BSSID: 58:44:98:b0:41:91
[NETAPP EVENT] IP acquired by the device

Device has connected to npllab
Device IP Address is 192.168.43.69

Version: Client LIB 1.4.0, Common LIB 1.5.0.
C: Alloc for 1 200246e4
C: FH-B1 0x10 to net 16, Sent (111 Bytes) [@ 5]
C: Alloc for 0 200246e4
C: Rcvd msg Fix-Hdr (Byte1) 0x20 from net 16 [@ 6]
C: Msg w/ ID 0x0000, processing status: Good
C: RX closing Net 16 [4]
C: Cleaning session for net 16

Broker connect fail for conn no. 1
C: Net 16 now closed
disconnect from broker m14.cloudmqtt.com

Exiting the Application

//////////////// Connect config

connect_config usr_connect_config[] =
{
{
{
{
SL_MQTT_NETCONN_URL,
SERVER_ADDRESS,
PORT_NUMBER,
0,
0,
0,
NULL
},
SERVER_MODE,
true,
},
NULL,
"user1",
NULL,
NULL,
true,
KEEP_ALIVE_TIMER,
{Mqtt_Recv, sl_MqttEvt, sl_MqttDisconnect},
TOPIC_COUNT,
{TOPIC1, TOPIC2, TOPIC3},
{QOS2, QOS2, QOS2},
{WILL_TOPIC,WILL_MSG,WILL_QOS,WILL_RETAIN},
false
}
};

I tested server by cell phone.

Please assist,

Part Number:CC3220SF-LAUNCHXL

Hello,

I am using azure simplesample_http demo from SimpleLink SDK plugins.
The demo is working fine but when I switch my wifi router off, the program catches the following hardware exception (file: Hwi.c):

PS: I experience the same problem with lp_monitor demo.

Please help

Part Number:MSP430F5529

Tool/software:TI-RTOS

I am going to build an iot device using msp430 MCU and need to use 6lowpan. does msp430 support that? or do I need to use an external chip? and what about contiki? is it supported by the micro controller? or do I need to install it on the device? 

Part Number:EZ430-CHRONOS

Greetings,

I have the eT430-Chronos-915. The watch band is in the meantime very much damaged. Anybody knows where to get one new watch band without buying a complete device but just the spare part?

Your help is very much appreciated.

Best regards

Matthias

Part Number:TMS320F2812

Hi team:

I have two questions about the document SPRABT3(Software Phase Locked Loop Design Using C2000™ Microcontrollers for Single Phase Grid Connected Inverter) and the spll_coeff_compute.xlsx(path: controlSUITE\libs\app_libs\solar).

1, In the spll_coeff_compute.xlsx and forum (https://e2e.ti.com/support/microcontrollers/c2000/f/171/p/600195/2207692?tisearch=e2e-sitesearch&keymatch=SPLL%20Kp%20Ki#2207692), Both of them said that the value of wn(the natural frequency ) should be 158.6859, but in SPRABT3, wn=119.014 (under formula 17 in SPRABT3). which one is correct?

2, I substituted the parameters (under formula 17 in SPRABT3) into spll_coeff_compute.xlsx. Which settling time as 30 ms, and the error band as 5% and damping ratio to be 0.7, the natural frequency is 119.014, 

But I got the Kp = 166.6196, the Ki = 14164.33(By formule), Not Kp =166.6 and Ki = 27755.55(By document). Then which one should be the correct one? Or is there any other ways to calculate the value of Ki?

3, Upon the figure 3 in SPRABT3(Chapter 2.2), ζ2 and ζ1 is given as 0.00001 and 0.1, How can I affirm the value of ζ2 and ζ1?

4, SPLL_1ph_init(GRID_FREQ,_IQ21((float)(1.0/ISR_FREQUENCY)) &spll1);

Whether the formule should be 0.001/ISR_FREQUENCY or not? Should the unit of ISR_FREQUENCY be KHz?

Thanks & Regards,

KK

Hi,

my Development environment is CCS 7.3.0.00019 with BLE Stack 2.2.1 and Compiler TI v5.2.6. My device is a Simplelink Sensor TAG (CC2650STK) Rev.1.3.

When I flash the pre-build firmware from the BLE Stack (file cc2650stk_sensortag_rel.hex located in ..\ti\simplelink\ble_sdk_2_02_01_18\examples\hex), the CC2650STK goes in stand by after 3 min. The stand by current settles down between 4 - 8 uA.

When I build the firmware from source:

-  ..\ti\simplelink\ble_sdk_2_02_01_18\examples\cc2650stk\sensortag\ccs\app

-  ..\ti\simplelink\ble_sdk_2_02_01_18\examples\cc2650stk\sensortag\ccs\stack

-  ..\ti\simplelink\ble_sdk_2_02_01_18\examples\util\bim_extflash\cc2640\ccs

the CC2650STK goes also in stand by, but the stand by current  settles down between 176 - 180 uA.

I use the source code and configuration from TI without any changes. Can you please explain the difference between source where the pre-build hex file is based on and the source code from the BLE Stack 2.2.1.

I have read hundreds of posts but I found no solution. I hope you can help.

Thanks

Please suggest suitable board design

The board is the all new electronic platform and the base for Testing Lab models. It is equipped with a powerful Arm microprocessor preferably with co processor It combines the software programmability of a Processor with the hardware programmability resulting in unrivalled levels of system performance and flexibility. The generous 100 Mpixel memory enables onboard storage of spectra and custom programming.

It must be equipped with 2 different AD convertors optimal performance for each detector type is assured.

The Board will have the ability of 2 communication ports: High Speed USB3.0 and GigaEthernet.

Also on board may have the HD26 digital I/O connector with 13 programmable digital I/O ports, 2 analog out ports and 2 analog in Ports. The connector is compatible with the I/O connector.

Microprocessor: Preferably 32 bit Arm with co processor

Memory: 100 Mpixel

A/D converter 16-bit, 2 channels for video signal / 16-bit, high end – low noise (detector dependent)

Integration time > 2 μs – 10 minutes (detector dependent)

Data Transfer speed : 1.1 ms/scan for 2048 pixels (USB3.0) or 3.8 ms /scan 2048 pixels (ETH)

USB interface 3.0 high-speed, 5 Gbps

Ethernet interface Giga Ethernet, 1 Gbps

Digital IO: HD-26 connector, 2 Analog in, 2 Analog out, 13 Digital bidirectional, trigger, synchronization, strobe, laser

Power supply : Default USB3.0 power, 500 mA or 12 VDC, reverse polarity protection, 300 mA

rgds
Juzer Gandhi
Raj Overseas
Ahmedabad
09824471252

Part Number:LMX2492EVM

Hi all,

I posted about this during the summer. I'm having trouble getting the LMX2492EVM to produce ramps.

Since I was limited in the frequency range due to a lack of appropriate equipment, I added a new VCO in the 400 - 800 MHz range and rerouted the components to reflect this.

There are a few steps I'm still confused about to produce a ramping signals:

1. The OSCin reference signal is my signal generator. I normally set it between 10-20 MHz (again due to a lack of high-end scopes). I can't find what the voltage range should be for the signals on the datasheets. I normally set OSCin to be 2-3 Vpp but that might be too high since the RFout and RFout/2 are always in the 50 mV range. I have no clue what the output voltage range should be. the 10-50 mV RFout voltage leads me to think that the whole thing is not working at all or that I need to attach an amplifier at the output if this is really what the output voltage range normally is.

2. When setting up ramps, I write the values in and then click on "Ramp enable". Then I click on "Write all registers" under USB communications. Sometimes the FFT of the output changes significantly so that is why I continue to "write all registers" even if it isn't necessary. 

3. In the "User Controls" tab I changed the MUXout_MUX to Output R and Output R/2 on separate occasions.

4. Something really weird that I've noticed (may be a common issue in general) but it appears that the output shows a waveform only when the input is being measured. Do you know what causes this? 

5. I really need to show the ability to produce ramps of various lengths by November 10th. If anyone could give me a basic procedure and tell me what fundamental mistakes I'm making, I'd be forever grateful. I doubt there is any hardware issues because I was really careful soldering the SMD components during the addition of the new, lower frequency VCO.

Thanks for your time. 

Here are a few screenshots below:

Part Number:DLPDLCR3010EVM

Badly I lent my device; and when it back to me, I turn it on and now the image is horrible.

Can it be repaired or is it just rubbish now? What may be they do to it?

Thank you.

Part Number:TLV3011-EP

Hello,

Looking at the TLV3011 (non-EP) datasheet, the Voltage Reference is specified as [1.230V, 1.242V, 1.254V], which corresponds to 1% accuracy (also specified in the datasheet), hence the [Min, Typ, Max] values corroborate with the specified initial accuracy percentage. This is, however, not the case with TLV3011-EP - 1% accuracy contradicts with [1.208V, 1.242V, 1.276V]. Please clarify which is correct.

Thanks,

Pervaze.