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jonathan chiles

Lectro SRc field reports?

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Maybe, but I can only relate my own experience.

 

I do not think I can make a truly logical conclusion based on the limits of the premise, yet it seems like a comfortable intuitive assumption. 

 

 

I am very interested to learn about the improvements made to the PCB layouts etc. I have two SRc A1 and two SRc B1 receivers and I thought I had waited long enough before buying them. When the improvements go online, I will be eager to learn if my radios can be upgraded to be the very best they can be.

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9 hours ago, IronFilm said:


So would people who always enter in their own frequencies (rather than using the built in scanner) then never experience these troubles others have been experiencing with the SRc?

Correct. If you use the SRc scanning function to select a frequency, it can incorrectly put you in an RF active region, 9.2 MHz away from the intended quiet frequency. If you manually select a frequency, the frequency and RF level displays are all valid. You can single step through frequencies or select frequencies from an external scanner and get valid frequency and RF level results.

This problem may have been in existence for many months but the Lectro crew has only understood the cause for less than a week. It takes a few days to rewrite the firmware and proof it. Then a day to bring the service people up to speed. Pull out a weekend and one can see the response has been pretty quick and open. Check out Allen K's Facebook link above to get the latest info and the planned and logical fix.

Best Regards,

Larry Fisher

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From the Facebook site: https://www.facebook.com/groups/69511015699/permalink/10155840314545700/
 
 
10422130_10205233255422277_8229208668281173877_n.jpg?oh=0f237aa20351e97ea2d63d339e9cc137&oe=5B1D2F0E Gordon Moore to Lectrosonics February 8 at 1:14pm ·    "Doug Pearson for the win! Doug recently posted pictures showing a discrepancy in the scans between a block 19 SRB and an SRC -A1. After several days of trying to duplicate the problem we finally found it (and are kicking ourselves for not catching this sooner). This answers the problems you ALL have been having with getting interference on "good frequencies" as shown on the scan of the SRC-A1.
 
There is a bug in the firmware that runs the scan. It was improperly indexing the channel selection in the scan and the hexadecimal value for the frequency was off by 9.2MHz! That's why Dougs pictures showed clear at EE on his SRB and messy EE on his SRC. The SRC receiver was working fine, the scan firmware was not. This also skews the values in the SmartScan by 9.2MHz. (not so smart, huh!)
 
So, while we will continue with beta testing the SRC new rev boards for their improvements - there ARE improvements there - we have FINALLY found the smoking gun for the majority of weirdnesses the SRC-A1 has shown.
 
This will require a firmware update for ALL SRC-A1's . We are investigating the B1 and C1 as well to make sure there isn't a similar offset problem.
It will take some time (not too long we hope) to program the bug out and get it tested to make sure we don't break something else with the firmware.
Stay tuned - we will post the new firmware on the website as soon as it is fixed, tested and released.
 
In the meantime, next time you see Doug, buy him a drink. His post helped us zero in on this bug (which has been plaguing the A-1 from the beginning). Thank you Doug, and all of you for the constant feedback/nagging/patience."
 
 
I never use the SRc scan function because I use a frequency analyzer for scanning, but it is interesting to learn about this discovery and planned fix. 
Does this only affect "SmartTune" or the "Scan" function as well?

Sent from my SAMSUNG-SM-G891A using Tapatalk

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17 minutes ago, BAB414 said:

Does this only affect "SmartTune" or the "Scan" function as well?

The Scan function is where the bug is.  However, SmartTune  uses the results of the bad scan. Therefore, both can be 9 MHz off. Until your units are reprogrammed, use an external scan or check the RF level of single frequencies on the display.

Best,

LEF

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Does this effect B2 SRc's?

 

Also, adding another problem to the list, I have recently purchased a B2 and have found that when in my 688/SL6, the SRc scan does not show up on the 688 screen, (see picture), but looking at the receiver screen you can see the scan is happening, and now, is it correct? There are a couple of other tuning issues which also don't work from the 688, but most other non-tuning functions appear to work. I have placed my receiver in other peoples 688/SL6 with the same results, but I have also put a B1 SRc into my rig, and all functions worked perfectly from the 688, thus proving this is B2 problem.

 

I have had some dialogue with Sound Devices who said it was a Lectrosonics problem, and my dealer spoke to Lectrosonics who said it was a Sound Devices problem, so no surprises there, but recently according to my dealer it does look as if Sound Devices have taken this on and as this started in December last year when I bought the receiver, I had hoped the recent 688 firmware update which I appreciate was primarily for the Audio Ltd A10 system would also address this problem with the SRc. Well it hasn't included a fix for the B2 SRc and in fact looking at what the new firmware, (4.52), does, even the A10 does not scan from the 688.

 

 

Dudley

LectroSRcScan (FILEminimizer).jpg

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14 minutes ago, dudsound said:

Does this effect B2 SRc's?

A1 only. The fault is that block 18, if it existed, would start at 460.8 MHz (25.6 MHz times 18). However, the bottom of the legal spectrum is 470 MHz, known as block 470. Notice that there is 9.2 MHz difference between the bottom of the non existent block 18 and the 470 MHz bottom of block 470. This where the 9.2 MHz error came up. This problem of a non-mathematical block doesn't exist in B1, etc. So, A1 only has this problem.

 

As far as your other problems with B2, I can only suggest that speaking directly with Lectro about a weird problem is roughly 103 times better than going through a dealer. Too much gets lost in translation. Like the venerable kids' game of "gossip". The seven hour offset is a bit of a problem, but setting up a time by email should work. So will an info dump by email. If necessary, service can and will get you to an engineer. (I despise 180 degree finger pointing).

Best Regards,

Larry Fisher

 

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The issue with the Sound Devices 688 is related to their recent firmware release.  They contacted us and our engineering department has spent considerable time checking and it has been narrowed down to a firmware glitch in the 688.  We are sending SD a current unit so they can chase down their bug. 

 

Our bug has nothing to do with their bug.  They aren't even the same species, so we don't have to worry about  cross breeding and getting a new bug.   

 

In short, their firmware issue is unrelated to our firmware issue.   (what I would like to know is what exactly is "firm" about firmware......)

 

Remember, the scan bug is ONLY on the A1 band units.  

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12 minutes ago, codyman said:

At this point, looks like it might be wise to invest in that new Lectro SRUSB plate to do your own firmware updates rather than paying for shipping/insurance + downtime to get the factory to update the firmware.

The plate will be provided free of charge for a week or so, if you don't want to purchase one. Update the unit, send the plate back and we will loan it to the next customer. Easy on you, easy on us. Lectro will request a credit card number to make sure they get the plate back so they can use it again.

Best,

LEF

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8 minutes ago, LarryF said:

The plate will be provided free of charge for a week or so, if you don't want to purchase one. Update the unit, send the plate back and we will loan it to the next customer. Easy on you, easy on us. Lectro will request a credit card number to make sure they get the plate back so they can use it again.

Best,

LEF

Very cool!

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We have 50 plates in the works right now - as soon as they clear production, we will start the loaner pool and organize the loan program.  I'v even hired a person for customer service to handle this (plus the boards swap and block changes).   We will post everywhere we can think of when all the ducks are properly aligned and start sending them out. 

 

You will get the endplate, a return shipping label, a piece of shipping tape and a reusable box. 

 

After you have reprogrammed your units, you will simply rebox the unit, use the tape to seal up the box, realize that you just sealed in the shipping label, open the box again, take out the shipping label, spend two hours looking for another price of tape to seal the box back, slap on the label, notice that you have now left the endplate sitting on the counter because the label was under it in the box, re-open the box, return the endplate to the interior, tape it up for the third time and ship it back to us. 

 

Or, if you don't want to do it the way I probably would, take the shipping label out first, pack the endplate,  tape up the box, then slap the label on and ship it. 

 

Whichever is easier............

 

2 hours ago, dudsound said:

Many thanks Larry & Gordon for your swift replies and for the dialogue with Sound Devices.

 

Dudley

 

 

They are good folks - we like working with them 

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59 minutes ago, Gordonmoore1 said:

After you have reprogrammed your units, you will simply rebox the unit, use the tape to seal up the box, realize that you just sealed in the shipping label, open the box again, take out the shipping label, spend two hours looking for another price of tape to seal the box back, slap on the label, notice that you have now left the endplate sitting on the counter because the label was under it in the box, re-open the box, return the endplate to the interior, tape it up for the third time and ship it back to us. 

Only the engineers, who will be furiously concentrating on getting the tape and labels stuck on, perfectly aligned.

LEF

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