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Upcoming Rigol DSG815/830

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Houseman:

--- Quote from: tv84 on March 25, 2022, 11:18:11 am ---Change USB pendrive. These equipments are extremely picky regarding USB pendisks.

Big size isn't better... it forces extra timings recognizing/validating things and that may crash against the timings of the internal software.

--- End quote ---

Thank You TV84...
 :-DD :-DD :-DD :-DD "Big size isn't better... it forces extra timings recognizing/validating things and that may crash against the timings of the internal software."
Could be the new excuse .... maybe accepted whenever understood by partner..
Sorry by digressing  :-DD :-DD :-DD You made me laugh, thanks

Houseman:

--- Quote from: chicken on November 26, 2020, 02:31:42 am ---I made a breakout board to explore the the OCXO option for the DSG-815 (option OCXO-B08).
https://beyondmeasure.rigoltech.com/acton/attachment/1579/f-0644/1/-/-/-/-/DSG800%20OCXO%20User%27s%20Guide.pdf



Pinout:
1: GND
2: Detect input
3: slot
4: slot
5: VCC
6: CLK input
7: VCC
8: VCC
9: GND
10: Detect output

VCC is 6.515 V when the signal generator is plugged into mains. This is higher than I expected as the OCXO-B08 datasheet specifies 5.00 V +/- 0.25 V. It didn't drop much with a 220 ohm resistor (~30 mA). Will have to find a bigger resistor to test at loads specified in datasheet (300-600 mA).

Detect output (pin 10) goes from 0 to 3.3 V when the signal generator is turned on. When I connect this pin to Detect input (pin 2) through a 1 K resistor Syst > Information > System Info reports the option OCXO-B08. Interestingly, there's no error message even though I don't feed an external clock signal yet.

CLK (pin 6) was the only pin left. Not tested yet.

The pitch of the pins on the edge-connector is 1mm, 10 positions with a key slot (which is counted as a position). A matching connector is Samtec 1mm Mini Edge Card Socket Vertical, part number MEC1-105-02-F-D-EM2 or MEC1-105-02-L-D-EM2.
https://www.samtec.com/products/mec1-105-02-f-d-em2
https://www.samtec.com/products/mec1-105-02-l-d-em2

The dimensions of my breakout PCB are 32 mm x 50 mm, 1.6 mm thickness. It turned out to be about 3 mm too long, so 32 x 47 mm would be the correct size.

The size of the original OCXO is likely 25.4 x 25.4 mm. There are no good images of the OCXO-B08 to be found, but OCXO options for the DSG3000 (OXCO-A08)  has similar specifications. Some images for that option show an OCXO from DAPU with part number O22B-G445. Unfortunately, that part number doesn't quite match with the numbering-scheme on DAPU's website:
https://www.dptel.com/Products/ProductLevel4/2899



Any thoughts about VCC being 6.5 V?

Any suggestions for a suitable OCXO for this application?

--- End quote ---

Rigol officially claims that the OXCO module has to be inserted at factory by them even after  since after plugging the expansion in all RF gen needs to be whole recalibrated again...

Houseman:
Sorry TV84
I am trying different usb sticks by your suggestion.
In order to break the problem in parts I wanted to test normal inserted USB keys. I hope that if seen by instruments it will also work for MOD.
Do you know by far if a normal USB key inserted will be shown in the System menu automatically? as i.e. using as print screen?
Is it like DS1054Z where inserted disk will be detected automatically by the instrument?
My system only shows D: internal drive.
No other USB disks.
Rebooting with normal USB not shown.
Best regards and thanks


Does

chicken:

--- Quote from: Houseman on March 25, 2022, 01:56:44 pm ---Do you know by far if a normal USB key inserted will be shown in the System menu automatically?

--- End quote ---

I get the E: drive and a small USB icon with the USB stick plugged in. I use a cheap Chinese uSD card adapter with an ancient uSD card, but it also should work with regular USB sticks.


--- Quote from: Houseman on March 25, 2022, 11:01:06 am ---One last question: what kind of protocol/program did you use by sending commands to the DSG? Netcat? Ultra Sigma? thank You again

--- End quote ---

I used Python with the vxi11 library for my experimentation. Looking at the code, I have just used the write(":PRIV:SOFT:MODE 0,FACTORYMODEENTRANCE") to set user mode, without expecting/reading a response. Then ask(":PRIV:SOFT:MODE?") to verify if it worked.


--- Quote from: Houseman on March 25, 2022, 12:15:23 pm ---Rigol officially claims that the OXCO module has to be inserted at factory by them even after  since after plugging the expansion in all RF gen needs to be whole recalibrated again...

--- End quote ---

Dooh!  :(

Houseman:

--- Quote ---
I used Python with the vxi11 library for my experimentation. Looking at the code, I have just used the write(":PRIV:SOFT:MODE 0,FACTORYMODEENTRANCE") to set user mode, without expecting/reading a response. Then ask(":PRIV:SOFT:MODE?") to verify if it worked.

--- End quote ---

What you just said has enlighten me.
You are right. Timeout connection occurs at response. So if I just send the command without asking anything maybe the system accept it even if at response it gives me timeout error.. will give it a try..
Thanks.

by the way no icon appears by inserting usb stick... maybe have a faulty unit.
best regards and thanks

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