Re: NanoVNA does not want to start -solved
I found a short write-up on the 5306 specs & on/off functions at :
IP5306 Datasheet ¨C Mobile Battery Power SOC
Posted on April 27, 2018 by Pinout
Part Number : IP5306
Function : 2.1A Charging 2.4A Discharge Highly Integrated Mobile Power SOC
Package : ESOP 8 Pin type
Manufactures : Injoinic Corp ( )
Description
The IP5306 is a multi-function power management SOC with an integrated boost converter, lithium battery charge management, and battery power indication, providing a complete power solution for mobile power supplies.
The high integration and rich features of the IP5306 make it possible to use only a few external components in the application and to effectively reduce the overall solution size and BOM cost.
Features
1. Synchronous switch charge and discharge
2. 2.4A Synchronous Boost Converter, 2.1A Synchronous Switch Charge
3. Boost efficiency up to 92%
4. Up to 91% charge efficiency
Applications
1. Mobile Power / Charging Po
2. Mobile phones, tablet PCs and other portable devices
Power control Using Key method
The IP5306 recognizes long and short key operation, and pin 5 is floating when no key is needed.
1. The key duration is longer than 50ms, but less than 2s, which is a short press action. Short press will turn on the power indicator and boost output.
2. The duration of the button is longer than 2 seconds, which means long press action. Long press will turn on or off the lighting LED.
3. The keystrokes less than 50ms will not have any response.
4. Pressing the button for two consecutive times in 1s will turn off the boost output, battery display, and lighting LED.
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Re: NanoVNA does not want to start -solved
Thanks for the link, but maybe you could post the file here in the files section so we don't have to register on yet another forum?
Although this is for the IP5306, the NanoVNA uses the IP5303 and the pinout is slightly different but the specs are the same.
I tried putting a 10uF cap on the input to the 3v regulator but that didn't work - in fact, when the inverter went to sleep almost no load would wake it up.
So - I added the 10K resistor and button sw and use that to turn my unit on-off now.
Larry
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Re: NanoVNA does not want to start -solved
Brian, Larry, a little correction. The 4mA consumption is with another Nano from a friend, and yes, he had an empty battery on receipt. I don't know why yet. In the meantime I have measured my unit consumption. The values are as follows:
PWR switch is OFF: 0.59 mA
PWR switch is ON, but Nano is not started: 0.64 mA
Started up with the new micro-switch :
Nano power-up: 182.8 mA
Nano goes in sleep mode (40 sec LED) set the PWR switch OFF: 3.83 mA
My values seem normal.
I do have a translated version of the IP5603, See link below.
If you want to know more about the strange behavior of the IP5303,
then we are not alone. The same problems are with a battery pack - see the M5Stack Community.
Link:.
You will also find the English translation of the IP5303 there.
Success
Herman
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Re: NanoVNA does not want to start -solved
The chip used is actually an IP5303 (per the schematic) and I too have not been able to find an English copy - you can always translate chunks of text with Google translate though.
The quiescent current is in the uA range.
As for turn on issues that I have also seen, I will be placing a 10uF cap at the input to the 3v regulator so that when switched-on, there will be a momentary current spike.
Hopefully, that will get the chip to turn on.
Larry
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I am nervous when giving my card details to someone whom I don¡¯t know. Hence my preference is to use Paypal. This is not available via aliexpress I understand. Hence I turn to ebay as first choice.
My black nanovna with all the extras, usb C and lead, came from ¡°flyxy2015¡± and is ebay item 143272472926. Price was good and I received it in Cyprus in 3 weeks. I was pleased to give him 5 stars. The load shunt was within 0.1 ohm of 50 and had a manufacturer¡¯s serial number on it. (Measurement limited by my Marconi bridge).
5B4AHW
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On 13 Aug 2019, at 00:09, Marius Milner <mariusm@...> wrote:
I got mine here:
Delivery to California was 2 weeks.
AJ6KL
On Mon, Aug 12, 2019 at 12:01 PM <km6rcj@...> wrote:
Hal,
I got mine from eBay (link and seller below). It came with the shielding,
4 traces, plastic case, 3pc Cal kit, USB C connector and cable, etc.
Seller: Elecdesign2015
Hope that helps.
KM6RCJ
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Re: NanoVNA does not want to start -solved
Herman, your figure of 4 to 5 mA with the nanovna Off looks very high. If you assume a battery of one to two amper-hours then this will discharge in less than 2 weeks! Most users, including myself, have received our nanovna after 3 weeks in the post and found them ready to go when the switch was operated. May I suggest that you look as to why it is consuming 4-5 mA when off. (Not an easy task but look to possible wrong polarity on electrolytic capacitors as they can draw this sort of drain. With the missing current adding up to 15mW of power, it might just show up on a top grade thermal camera if you can find one with a 0.1 C resolution or better.)
I have looked for a IP5306 data sheet in English but failed to find one. Looking at a Chinese one, which language I have no ability at all, I see the figure of 50uA which may be the off current. This would mean a possible 4 years to deplete the battery. Any Chinese speaker able to confirm this, or otherwise.
Regards, Brian.
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On 13 Aug 2019, at 01:29, Herman De Dauw <on1bes@...> wrote:
NanoVNA does not want to start.
Hi group. I received my black NanoVNA a few days ago.
This turned out not to want to start after unpacking.
I thought the battery was empty, so I connected it to the USB charger.
He wanted to start up immediately on the USB. The battery was charged very quickly.
After disconnecting the USB, I wanted to start up again, which never did not work.
He worked on the USB cable, so I worked on the USB cable all day.
My colleagues with other NanaVNAs (including the white ones) apparently also had battery problems.
On the forum in message # 639 there is mention of adding C38, but it is already there with me (see photo), and gives no solution.
The following day I did further tests, with strange results:
- I can boot with the USB cable, but not with the battery.
- after removing the USB cable, I was able to continue working on the battery for another 2 hours.
The battery was not defective, I just could not start it.
I then did some research for the following.
Once the NanaVNA runs on the battery, and then is turned OUT, the blue LED lights up for another 40 seconds. I already wondered why that is in the manual.
This means that the IP5306 controller then goes into Deep Sleep Mode.
That happens when less than 45 mA is used to save the battery.
The strange thing is that as long as the LED is on, I can start up normally with a battery.
Once the LED is off, and the IP5306 is in Sleep Mode, I cannot boot anymore.
According to the datasheet this is normal, and the IP5306 cannot be activated in sleep mode!
Unless: disconnect the battery, and back on, or at least a consumption of >45mA must be seen again, and apparently that does not work with the NanoVNA.
The battery cannot be disconnected from the Nano, which is according to the diagram directly on the IP5306. Note: if the NanoVNA is off, the battery consumption of 4 to 5 mA is still on the high side.
A consumption of >45mA is probably not yet available at start-up, so that the IP5306 does not come from sleep mode.
If you look at the diagram, the IP5306 has a pin 5 (key) that is not connected.
With this, however, you can put the controller in the normal load mode or get it out of sleep mode.
As a solution I have placed a micro push switch (glued) on connector P2 between GND and SWCLK.
On SWCLK I place a SMD resistor of 10K in series and with a wire I go to pin5 (key) of the IP5306.
In this way I can now do the following:
- I press the micro switch briefly 1x, the blue LED lights up and then I switch on the on / or switch, and see: the Nano starts up!
- I press the micro switch twice briefly, and the blue LED and the Nano go OFF again. Also switch OFF the on / off switch. This was the minor modification.
The photo of this modification can be found in the attachment.
Hopefully many have been helped with this.
Grts, on1bes Herman
<NanoVNA_startup.jpg>
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Hi Franks
Any luck to have the STL Files , since I have a printer of my own
or are they on Thingiverse ?
It is a nice case
Tnx
ON7MA
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Hi Duwayne
Nice Design !!
Since I have a 3D printer of my own, could I get the STL Files, or are they on Thingiverse ? I did not notice them
Tnx anyway for your energy
ON7MA
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Re: NanoVNA does not want to start -solved
Thanks for the fix, Herman.
I had added the cap on the DSP reset line and it seemed to work for me but I did notice the strange way that the inverter chip worked.
I wonder if we can just do away with the power switch and add your circuit to turn the unit on and off.
Cheers
Larry
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NanoVNA does not want to start -solved
NanoVNA does not want to start.
Hi group. I received my black NanoVNA a few days ago.
This turned out not to want to start after unpacking.
I thought the battery was empty, so I connected it to the USB charger.
He wanted to start up immediately on the USB. The battery was charged very quickly.
After disconnecting the USB, I wanted to start up again, which never did not work.
He worked on the USB cable, so I worked on the USB cable all day.
My colleagues with other NanaVNAs (including the white ones) apparently also had battery problems.
On the forum in message # 639 there is mention of adding C38, but it is already there with me (see photo), and gives no solution.
The following day I did further tests, with strange results:
- I can boot with the USB cable, but not with the battery.
- after removing the USB cable, I was able to continue working on the battery for another 2 hours.
The battery was not defective, I just could not start it.
I then did some research for the following.
Once the NanaVNA runs on the battery, and then is turned OUT, the blue LED lights up for another 40 seconds. I already wondered why that is in the manual.
This means that the IP5306 controller then goes into Deep Sleep Mode.
That happens when less than 45 mA is used to save the battery.
The strange thing is that as long as the LED is on, I can start up normally with a battery.
Once the LED is off, and the IP5306 is in Sleep Mode, I cannot boot anymore.
According to the datasheet this is normal, and the IP5306 cannot be activated in sleep mode!
Unless: disconnect the battery, and back on, or at least a consumption of >45mA must be seen again, and apparently that does not work with the NanoVNA.
The battery cannot be disconnected from the Nano, which is according to the diagram directly on the IP5306. Note: if the NanoVNA is off, the battery consumption of 4 to 5 mA is still on the high side.
A consumption of >45mA is probably not yet available at start-up, so that the IP5306 does not come from sleep mode.
If you look at the diagram, the IP5306 has a pin 5 (key) that is not connected.
With this, however, you can put the controller in the normal load mode or get it out of sleep mode.
As a solution I have placed a micro push switch (glued) on connector P2 between GND and SWCLK.
On SWCLK I place a SMD resistor of 10K in series and with a wire I go to pin5 (key) of the IP5306.
In this way I can now do the following:
- I press the micro switch briefly 1x, the blue LED lights up and then I switch on the on / or switch, and see: the Nano starts up!
- I press the micro switch twice briefly, and the blue LED and the Nano go OFF again. Also switch OFF the on / off switch. This was the minor modification.
The photo of this modification can be found in the attachment.
Hopefully many have been helped with this.
Grts, on1bes Herman
|
I got mine here:
Delivery to California was 2 weeks.
AJ6KL
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On Mon, Aug 12, 2019 at 12:01 PM <km6rcj@...> wrote: Hal,
I got mine from eBay (link and seller below). It came with the shielding,
4 traces, plastic case, 3pc Cal kit, USB C connector and cable, etc.
Seller: Elecdesign2015
Hope that helps.
KM6RCJ
|
Hal,
I got mine from eBay (link and seller below). It came with the shielding, 4 traces, plastic case, 3pc Cal kit, USB C connector and cable, etc.
Seller: Elecdesign2015
Hope that helps.
KM6RCJ
|
Ebay is generally ok with good protection.?Has anyone been playing with the Bangood $45 spectrum analyser board? It goes from 33MHz to 4.4GHz with a tracking generator to 3 GHz. Perhaps we should start a separate group for that one.? I am finding out all kind of things about it.Sent from my Samsung Galaxy smartphone.
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-------- Original message --------From: Hal Dale <wb4aeg@...> Date: 12/08/2019 20:34 (GMT+01:00) To: [email protected] Subject: [nanovna-users] Place to buy Is there any one vendor thats the best place to buy?? Hal/WB4AEG
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Re: Measurement of high impedance loads
Haven't? tried that, think it's a tricky business modulating the bandgap reference. The AD8318 goes up to 8GHz and has 55dB dynanic range. I use the AD8302 a lot which goes up to 2GHz with 60dB dynamic range and gives phase angles too, but with a sign ambiguity.Sent from my Samsung Galaxy smartphone.
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-------- Original message --------From: Oristo <ormpoa@...> Date: 12/08/2019 18:48 (GMT+01:00) To: [email protected] Subject: Re: [nanovna-users] Measurement of high impedance loads > I don't? believe the SA612 detectors are good to 0.1dB magnitudes.> The AD8307 is good to 0.3dB at best and its a much better chip. SA612 are being used as mixers; do you suggest using AD8307 as mixer,perhaps connecting ENB input to local oscillator?AD8307 Upper Usable Frequency is 500MHz; ENB delay spec is? 400-500 ns;
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Is there any one vendor thats the best place to buy? Hal/WB4AEG
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Re: Measurement of nonlinear (active) devices
Quite right Alan, vna measurements for non-linear devices and power devices are full of caveats. Not for the nano.Sent from my Samsung Galaxy smartphone.
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-------- Original message --------From: alan victor <avictor73@...> Date: 12/08/2019 19:54 (GMT+01:00) To: [email protected] Subject: Re: [nanovna-users] Measurement of nonlinear (active) devices The fundamental issue in using the NanoVNA for measuring active devices is FIRST its output power level. It is specified at -9 dBm to -12 dBm. If you consider a bipolar device operating at a quiescent current of 1 mA, these power levels are too large! The small signal S parameters are just that, small signal. A bipolar transistor had a Vbe value of 26 mV/mA of emitter current. Hence, once you subject the DUT to such a Pin level, you will notice the quiescent bias level to increase! That is NOT a small signal measurement. As a rule of thumb, I would start at -30 or -40 dBm and get a S21 dB measure. So you will need a 20 or 30 dB pad.You may also pad the output of the VNA, CH0,? to achieve an appropriate level. I would also pad the CH1 of the VNA to be sure that the VNA is not over driven as the gain of the device, S21,? at audio and HF may be quite large.Also, be sure your DUT is stable! I have seen 100k$+ VNA's go up in smoke as a measurement of a power device was unstable. The device will oscillate and the VNA is destroyed.You will have to construct bias tees. More on that latter.Alas... its only a 50 buck VNA... go for it. But your warned. 73' Alan
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Re: Measurement of high impedance loads
Indeed. That is why we have the Maxwell and Wien bridges, they have discovered this more than 200 years ago. I still cherish my antenna noise bridges for sure.Sent from my Samsung Galaxy smartphone.
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-------- Original message --------From: George <steber@...> Date: 12/08/2019 20:16 (GMT+01:00) To: [email protected] Subject: Re: [nanovna-users] Measurement of high impedance loads "Phase angles and imaginary parts were not in the scope of what I was checking."Measuring resistors with a resistance bridge usually produces good results. But measuring inductors and capacitors with a resistance bridge does not work as well because measuring angles near plus/minus 90 degrees is very difficult for a resistance bridge. And these errors accumulate faster than for pure resistors measured at zero degrees.
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Re: Measurement of nonlinear (active) devices
"Has anyone measured the accuracy of nonlinear, active devices like semiconductors?
In general, a power level of -30dBm and higher will have an effect on the measured accuracy.
How will the harmonics of the test signal have an effect?"
Do you really want to put a square wave into your nonlinear device?
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Re: Measurement of high impedance loads
"Phase angles and imaginary parts were not in the scope of what I was checking."
Measuring resistors with a resistance bridge usually produces good results. But measuring inductors and capacitors with a resistance bridge does not work as well because measuring angles near plus/minus 90 degrees is very difficult for a resistance bridge. And these errors accumulate faster than for pure resistors measured at zero degrees.
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Re: Measurement of nonlinear (active) devices
I agree that for active devices the NanoVNA would not be acceptable. I usually start measurements at -30 dBm with my scalar network analyzers when measuring amplifiers, to avoid overload. By carefully watching the DC current into the amplifier and slowly raising? the input RF level, you can tell when it is into saturation.
Trying to turn the NanoVNA, which as far as I can tell was born as an antenna analyzer for hams, into a multi-thousand dollar VNA is fraught with peril.
I am sure that there is room for improvement and growth for this very nice, inexpensive piece of test equipment, but don't expect too much.?
Stuart K6YAZLos Angeles, USA
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-----Original Message----- From: alan victor <avictor73@...> To: [email protected] < [email protected]> Sent: Mon, Aug 12, 2019 10:55 am Subject: Re: [nanovna-users] Measurement of nonlinear (active) devices The fundamental issue in using the NanoVNA for measuring active devices is FIRST its output power level. It is specified at -9 dBm to -12 dBm. If you consider a bipolar device operating at a quiescent current of 1 mA, these power levels are too large! The small signal S parameters are just that, small signal. A bipolar transistor had a Vbe value of 26 mV/mA of emitter current. Hence, once you subject the DUT to such a Pin level, you will notice the quiescent bias level to increase! That is NOT a small signal measurement. As a rule of thumb, I would start at -30 or -40 dBm and get a S21 dB measure. So you will need a 20 or 30 dB pad. You may also pad the output of the VNA, CH0,? to achieve an appropriate level. I would also pad the CH1 of the VNA to be sure that the VNA is not over driven as the gain of the device, S21,? at audio and HF may be quite large. Also, be sure your DUT is stable! I have seen 100k$+ VNA's go up in smoke as a measurement of a power device was unstable. The device will oscillate and the VNA is destroyed. You will have to construct bias tees. More on that latter. Alas... its only a 50 buck VNA... go for it. But your warned. 73' Alan
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Jempi ( ON7MA )
F4WCV
Hal Dale