Search found 104 matches

by Daniel (Intona)
November 16th, 2023, 2:07 pm
Forum: USB Isolators for industrial environment
Topic: 7055-D current capacity for DC-DC converter
Replies: 2
Views: 5439

Re: 7055-D current capacity for DC-DC converter

The DC-DC controller max output is 500 mA. However, the circuit on the secondary side must also be supplied with that power which is about 90 mA.
If you need more current, you must use the AUX port. This is galvanically connected to the secondary side.
by Daniel (Intona)
August 24th, 2023, 10:19 am
Forum: USB Isolator and Audio
Topic: INTONA USB 3.0 isolator can't work with oyaide 5S V2 USB cable
Replies: 6
Views: 40807

Re: INTONA USB 3.0 isolator can't work with oyaide 5S V2 USB cable

I doubt that this cable (I mean that one that doesn't work reliable) is even USB 2.0 compliant.
by Daniel (Intona)
August 2nd, 2023, 3:25 pm
Forum: USB Isolator and Audio
Topic: Adding a usb passive hub between intona and dacs
Replies: 2
Views: 3517

Re: Adding a usb passive hub between intona and dacs

Go ahead, I don't see any problem with that.
by Daniel (Intona)
June 21st, 2023, 5:02 pm
Forum: USB Isolators for industrial environment
Topic: "Device not recognized" Issues
Replies: 3
Views: 5235

Re: "Device not recognized" Issues

I have observed this with several hub products and I don't know why this happens. What I also observed that those hubs worked fine with 7055-D.
by Daniel (Intona)
June 19th, 2023, 7:03 am
Forum: USB Isolator and Audio
Topic: Is intona USB isolator bi-directional?
Replies: 1
Views: 3457

Re: Is intona USB isolator bi-directional?

The USB signal is always bidirectional. There is no need to alter the orientation of the isolator regardless of the purpose of the final device.
by Daniel (Intona)
June 9th, 2023, 7:33 pm
Forum: USB Isolators for industrial environment
Topic: "Device not recognized" Issues
Replies: 3
Views: 5235

Re: "Device not recognized" Issues

When the issue happens, is the hub itself still recognized by the OS?
Do the devices actually use the USB 3.0 mode at 5 GBps?
by Daniel (Intona)
May 14th, 2023, 8:32 pm
Forum: USB Isolator and Audio
Topic: Intona 7054-C-NF does connect to pc, but not to Mac
Replies: 2
Views: 4154

Re: Intona 7054-C-NF does connect to pc, but not to Mac

I am not aware of a bug like this but please contact our customer support directly with your serial number. They will check if you probably run an outdated firmware version.
by Daniel (Intona)
May 3rd, 2023, 5:47 pm
Forum: USB Isolator and Audio
Topic: Cannot achieve lock with Streamer
Replies: 31
Views: 30218

Re: Cannot achieve lock with Streamer

Can you describe color and blink rythm of the LED on the isolator?
by Daniel (Intona)
March 20th, 2023, 1:41 pm
Forum: USB Isolators for industrial environment
Topic: Model 7055-B Output Current Capability
Replies: 8
Views: 13353

Re: Model 7055-B Output Current Capability

The AUX port follows Micro-USB specification. Only +VBUS and GND are used. The data lines are AC-grounded (via capacitor, for EMI reasons) and can be viewed as "not connected". If you reverse the polarity, your AUX supply will be just shorted by the reverse diode of the detector MOSFET. If your supp...
by Daniel (Intona)
March 17th, 2023, 11:51 am
Forum: USB Isolators for industrial environment
Topic: Model 7055-B Output Current Capability
Replies: 8
Views: 13353

Re: Model 7055-B Output Current Capability

The noise figure can be guaranteed only when using the internal DC-DC and not the AUX port. This is because the AUX will be switched to the device port directly using a relay, effectively disabling the internal regulator. About the other questions, we will take some measurements and present them her...
by Daniel (Intona)
February 27th, 2023, 10:55 am
Forum: USB Isolator and Audio
Topic: Compatibility of 7055C
Replies: 1
Views: 3861

Re: Compatibility of 7055C

We have already all workarounds implemented that can be done without becoming incompatible to standard devices. These handshake issues with some DACs cannot be fixed without enumaration + extra buffers (like a hub does).
by Daniel (Intona)
February 18th, 2023, 11:42 am
Forum: USB Isolator and Audio
Topic: Reconnecting with DAC
Replies: 2
Views: 4815

Re: Reconnecting with DAC

The blinking lights show that the 7054 is stuck in Full Speed mode and didn't reveice a proper reset from the DAC. Placing a hub in between should help. Because a hub can simply switch modes after a timeout while the 7054 with its two isolation sides must rely on proper signalling on both sides.
by Daniel (Intona)
February 10th, 2023, 9:54 am
Forum: Cables and Audio
Topic: provide the specific measurement data
Replies: 1
Views: 3581

Re: provide the specific measurement data

Please look into your email inbox (maybe junk filter?). I have sent you the data a few days ago.
by Daniel (Intona)
February 9th, 2023, 11:17 am
Forum: USB Isolators for industrial environment
Topic: most reliable USB setup - 16 peripheral
Replies: 2
Views: 4707

Re: most reliable USB setup - 16 peripheral

I suggest that you order one unit and test it. You can send it back for a refund if you run into issues.
I recommend 7055-D if you are also using USB 3.0-3.2. If you just need USB 2.0 Hi Speed at your end points, the cheaper 7055-B would do. They share the same 2.0 isolation circuit.
by Daniel (Intona)
December 22nd, 2022, 9:17 pm
Forum: Cables and Audio
Topic: USB Ultimate individual measurement data sheets?
Replies: 3
Views: 7066

Re: USB Ultimate individual measurement data sheets?

Of course! We have all the individual characterization data saved in a database.
by Daniel (Intona)
November 23rd, 2022, 6:45 am
Forum: USB Isolator and Audio
Topic: 7055-C noise measurements
Replies: 32
Views: 71968

Re: 7055-C noise measurements

This is recoreded correctly.
While 7055-B and 7055-D have an identical linear regulation circuit, the 7055-C is tweaked to get lower noise at audio frequencies.
Everything has a price.
by Daniel (Intona)
August 9th, 2022, 11:27 am
Forum: USB Isolator and Audio
Topic: Cannot achieve lock with Streamer
Replies: 31
Views: 30218

Re: Cannot achieve lock with Streamer

That is very close to be a snake oil product. Based on lacking knowledge on EE and physics of a typical audio enthusiast (which is ok), this is money down the drain (and not ok).
by Daniel (Intona)
July 1st, 2022, 4:38 pm
Forum: USB Isolator and Audio
Topic: Intona 7055-C not detecting Mutec MC3+ USB???
Replies: 4
Views: 6271

Re: Intona 7055-C not detecting Mutec MC3+ USB???

You can try putting a usb hub in between. This helped a lot with similar issues.
by Daniel (Intona)
June 20th, 2022, 2:37 pm
Forum: USB Isolator and Audio
Topic: Intona 7055-C not detecting Mutec MC3+ USB???
Replies: 4
Views: 6271

Re: Intona 7055-C not detecting Mutec MC3+ USB???

Hi Chris,
I had a deeper lock into this back in 2016. It pointed out that the XMOS chip they use has an outdated firmware with known USB compatibility issues. I contacted Mutec and offered help but never received an answer.
by Daniel (Intona)
April 25th, 2022, 2:05 pm
Forum: USB Isolator and Audio
Topic: Any reason for upgrade from a 7054 to newer model?
Replies: 1
Views: 4917

Re: Any reason for upgrade from a 7054 to newer model?

There won't be any difference with the RPi4. The main difference to the -X model (other than isolation voltage) is that the -X has highly qualified parts that are suitable for harsh industrial or medical environments. It's understandable that this makes a difference in value for hi-end audiophile op...
by Daniel (Intona)
April 7th, 2022, 7:55 pm
Forum: USB Isolators for industrial environment
Topic: USB Oscilloscope Connection
Replies: 2
Views: 6247

Re: USB Oscilloscope Connection

We happen to have a 4262 in the lab. Yes, you unfortunately need to power the AUX port to get this scope working well. The typical noise out of a standard charging wall wart should not harm the performance of the scope in any way. (Hey, it's just 16 bits and the Picoscope preamp stage is very well d...
by Daniel (Intona)
March 14th, 2022, 9:38 am
Forum: Miscellaneous
Topic: Will intona make network cable?
Replies: 3
Views: 10288

Re: Will intona make network cable?

!
by Daniel (Intona)
March 9th, 2022, 7:45 pm
Forum: USB Isolators for industrial environment
Topic: I want to place an order
Replies: 1
Views: 5401

Re: I want to place an order

We of course accept legacy bank transfers. I don't know why we didn't receive your request. I suggest that you use our public email address that can be found on our "legal" web site. https://intona.eu/en/company/legal Btw: Paypal is the one of most reputable bank companies out there. So, yes, it is ...
by Daniel (Intona)
February 11th, 2022, 3:06 pm
Forum: USB Isolator and Audio
Topic: Intona USB 2.0 and Devialet 400 not connecting
Replies: 2
Views: 5242

Re: Intona USB 2.0 and Devialet 400 not connecting

Using galvanic isolation requires 100% USB compliant devices and cables. Most audio devices on the market are not tested properly and may stop working when connected to an isolator. What very often helps, is connecting a USB hub in between either the device and the isolator or between the PC and the...
by Daniel (Intona)
February 7th, 2022, 5:55 pm
Forum: USB Isolator and Audio
Topic: USB 2.0 Isolator 5kV Model 7055-B
Replies: 2
Views: 28325

Re: USB 2.0 Isolator 5kV Model 7055-B

1. It is "dark" isolated. Same result as optical but with another technology. This is done using high speed CMOS isolators by Silicon Labs (formerly -- now sold to Skyworks Solutions). There is no way for direct optical isolation of USB 2.0 today. Using VCSEL (laser) technology like on the USB 3.0 w...
by Daniel (Intona)
December 14th, 2021, 2:22 pm
Forum: USB Isolator and Audio
Topic: Cannot achieve lock with Streamer
Replies: 31
Views: 30218

Re: Cannot achieve lock with Streamer

My Pi4B here is working perfectly fine. Maybe there is a USB-incompatibility in your setup. If you use "audiophile grade" USB cables, swap them with off-the-shelf gray USB cables just out of curiosity. You can also try a proper Computer (e.g. MacBook) with your DAC and the Intona isolator and watch ...
by Daniel (Intona)
October 25th, 2021, 8:02 am
Forum: USB Isolators for industrial environment
Topic: Cannot maintain connection with audio analyzer
Replies: 6
Views: 10433

Re: Cannot maintain connection with audio analyzer

The ground is completely isolated and has an air gap to extend the creepage distance even beyond the necessary. AUX is coupled tightly to the isolated side. This is for pushing more current to the device where the DC/DC isolation would be too weak. Any quality branded standard PSU has usually a very...
by Daniel (Intona)
September 6th, 2021, 8:33 am
Forum: USB Isolators for industrial environment
Topic: Cannot maintain connection with audio analyzer
Replies: 6
Views: 10433

Re: Cannot maintain connection with audio analyzer

First, the USB 2.0 portion is the same in all 7055 models: isolation voltage is 5kV RMS and there is no intentional capacitive coupling. Isolation is granted between DC and GHz range (limited by the parasitic capacitance that is everywhere in nature and defined by clearance and air gap which is indu...
by Daniel (Intona)
September 4th, 2021, 8:52 am
Forum: USB Isolators for industrial environment
Topic: Cannot maintain connection with audio analyzer
Replies: 6
Views: 10433

Re: Cannot maintain connection with audio analyzer

The APx series is known to be a bit flimsy when it comes to analog coupled, redriven 3.0 wires. This is what the 7055-C does. I suggest that you replace your isolator by the 7055-D model. This has true digital, optical, protocol-aware isolation. Another quick solution is to use the USB 2.0 portion o...
by Daniel (Intona)
August 11th, 2021, 8:00 am
Forum: USB Isolators for medical application
Topic: LED Blinks in other way than data sheet states
Replies: 1
Views: 8143

Re: LED Blinks in other way than data sheet states

It looks to me that it's locked in a loop between suspend and wake-up. This is not normal and probably caused by a transient burst. There are burst-hardened firmware versions available that we tweaked for higher levels in IEC 61000-4-4 in medical applications. To discuss this further, please contact...
by Daniel (Intona)
August 4th, 2021, 7:49 pm
Forum: USB Isolator and Audio
Topic: INTONA USB 3.0 isolator can't work with oyaide 5S V2 USB cable
Replies: 6
Views: 40807

Re: INTONA USB 3.0 isolator can't work with oyaide 5S V2 USB cable

The isolator needs USB compliant cables. Often, "audiophile grade" cables have the screen or even the ground wire disconnected on one side. This is not compliant at all and this cannot work with galvanic isolation because the isolator breaks the shielding and ground by design and doing this twice is...
by Daniel (Intona)
July 27th, 2021, 10:14 am
Forum: USB Isolator and Audio
Topic: Cannot achieve lock with Streamer
Replies: 31
Views: 30218

Re: Cannot achieve lock with Streamer

I am currently awaiting a Pi4B. I will have a look into the data transfer asap.
by Daniel (Intona)
June 29th, 2021, 8:21 pm
Forum: Ethernet Debugger
Topic: Latency and Jitter
Replies: 0
Views: 12609

Latency and Jitter

An attempt to characterize the effect of latency and jitter within the Intona Ethernet Debugger has been done in the following White Paper.

PDF: [External Link Removed for Guests]
Online-Version: [External Link Removed for Guests]
by Daniel (Intona)
June 10th, 2021, 10:43 am
Forum: USB Isolators for industrial environment
Topic: Letter of Volatility
Replies: 0
Views: 10098

Letter of Volatility

To comply with security requirements and equipment handling procedures, there is now a statement about handling storage media available.

Online version: [External Link Removed for Guests]
PDF download: [External Link Removed for Guests]
by Daniel (Intona)
June 7th, 2021, 9:06 am
Forum: USB Isolator and Audio
Topic: Daisy Chaining Intona USB isolators
Replies: 2
Views: 34945

Re: Daisy Chaining Intona USB isolators

Short answer: does only work with hubs in between. Long answer: doing transparent isolation requires utilization of a complete USB packet frame (side note: this is the reason why you need 100% USB compliant hardware for both host and device). Connecting two isolators in chain would violate the packe...
by Daniel (Intona)
June 7th, 2021, 8:50 am
Forum: Miscellaneous
Topic: Will intona make network cable?
Replies: 3
Views: 10288

Re: Will intona make network cable?

Maybe.
by Daniel (Intona)
May 21st, 2021, 8:52 pm
Forum: USB Isolator and Audio
Topic: Cannot achieve lock with Streamer
Replies: 31
Views: 30218

Re: Cannot achieve lock with Streamer

That points me that the rpi4 does not deliver enough power for the isolator. Is the DAC USB-powered? Which isolator model do you have?
by Daniel (Intona)
May 17th, 2021, 5:26 pm
Forum: USB Isolator and Audio
Topic: Cannot achieve lock with Streamer
Replies: 31
Views: 30218

Re: Cannot achieve lock with Streamer

Didn't hear of any rpi related issues. I will try it with some rpi when I am in the lab next time.
by Daniel (Intona)
May 6th, 2021, 9:03 am
Forum: USB Isolator and Audio
Topic: Cannot achieve lock with Streamer
Replies: 31
Views: 30218

Re: Cannot achieve lock with Streamer

Please try the hub between MBPro and Isolator.
by Daniel (Intona)
May 3rd, 2021, 8:42 am
Forum: USB Isolator and Audio
Topic: Cannot achieve lock with Streamer
Replies: 31
Views: 30218

Re: Cannot achieve lock with Streamer

They are using an off-the-shelf XMOS chip. aries-g1-detail.jpeg XMOS supplies the USB audio classes (UAC 2.0) to their customers free of charge since ever. There were many, many bugs in this and there is no straight forward USB compliance testing. But doing transparent USB isolation requires 100% US...
by Daniel (Intona)
April 19th, 2021, 8:39 am
Forum: USB Isolator and Audio
Topic: Isolate 2.5" external SSD connected to Streamer/DAC
Replies: 1
Views: 33747

Re: Isolate 2.5" external SSD connected to Streamer/DAC

About 1): yes! About 2): at least you won't expect to make it worse. 2a) If you expect any difference in your audio quality: this is technically impossible. If somebody is promising any difference in audio by using isolators or filters connected to storage media, he is very likely cheating you. Ther...
by Daniel (Intona)
April 10th, 2021, 8:16 pm
Forum: USB Isolator and Audio
Topic: Isolation between streamer and DAC - which Intona device will be the best ?
Replies: 10
Views: 12856

Re: Isolation between streamer and DAC - which Intona device will be the best ?

Transit time is 2-4 working days. We always ship by UPS Express. I recommend the 7055-B for your system as it has the highest isolation vs. (low) noise floor. But you are not limited to a specific model. All Intona isolators, even those with USB 3.0, will work in your system. USB 3.0 is (if properly...
by Daniel (Intona)
March 17th, 2021, 7:39 am
Forum: Cables and Audio
Topic: USB Ultimate individual measurement data sheets?
Replies: 3
Views: 7066

Re: USB Ultimate individual measurement data sheets?

Sure, I will send you the measurement results by PM.
by Daniel (Intona)
March 8th, 2021, 8:42 pm
Forum: USB Isolator and Audio
Topic: Isolation between streamer and DAC - which Intona device will be the best ?
Replies: 10
Views: 12856

Re: Isolation between streamer and DAC - which Intona device will be the best ?

It's interesting to me that your DAC's THD+N measures less than 0.0001%. This is below -120 dB which is not only remarkable but to my knowledge certainly beyond physical limits, even at a BW of 20 kHz. Would you mind sharing more details about this? It just sounds awesome!
by Daniel (Intona)
March 8th, 2021, 8:38 pm
Forum: USB Isolator and Audio
Topic: Isolation between streamer and DAC - which Intona device will be the best ?
Replies: 10
Views: 12856

Re: Isolation between streamer and DAC - which Intona device will be the best ?

Hi Andy, if you are sensitive on the supply rails and are looking for least noise there, the 7055-C is proven to be the most silent. If you are looking for highest overall isolation (so with least parasitic capacitance), you are best with 7055-B. You need to decide yourself at the end, which one is ...
by Daniel (Intona)
January 14th, 2021, 12:08 pm
Forum: Ethernet Debugger
Topic: High resolution timestamps for packets details
Replies: 2
Views: 31562

Re: High resolution timestamps for packets details

The timestamps are taken from the internal 64 bit counter that is incremented by 10 at 100 MHz, so the resolution 1 ns with 10 ns quantization. That 100 MHz is generated by the FPGA's PLL, clocked by the on-board 25 MHz oscillator (stability: 30ppm). The timestamp is caught exactly at the time when ...
by Daniel (Intona)
October 21st, 2020, 1:21 pm
Forum: USB Isolator and Audio
Topic: Intona 7054X ASIO issue
Replies: 7
Views: 13844

Re: Intona 7054X ASIO issue

Is the E30 powered by the USB bus or by its own power supply?