Introduction to using 'TG Power Sweep'. See the attached PDF titled 'DSA815-TG, TG Power Sweep Mode'.
Introduction to using 'TG Power Sweep'. See the attached PDF titled 'DSA815-TG, TG Power Sweep Mode'.
Yes, a very handy feature, too bad it doesnt work with my 815
Introduction to using 'TG Power Sweep'. See the attached PDF titled 'DSA815-TG, TG Power Sweep Mode'.
Yes, a very handy feature, too bad it doesnt work with my 815
Same here, and that document was the basis of my tests.
TG Power Sweep works for me with firmware .12. Did you connect a coax cable between TG Output and SA Input before selecting the 'Power Sweep' settings?. You should see a ramp up to 10/11dB in 10 or 11 steps (I don't recall if it was 10 or 11).
TG Power Sweep works for me with firmware .12. Did you connect a coax cable between TG Output and SA Input before selecting the 'Power Sweep' settings?. You should see a ramp up to 10/11dB in 10 or 11 steps (I don't recall if it was 10 or 11).
Yes coax connected.. With settings all exactly the same as shown in the Rigol .pdf, I just get a flat-line at -20dB with both FW 01.012 & FW 01.09. Does your SA have the pin 7/8 jumper mod that keeps the trials alive?
TG Power Sweep works for me with firmware .12. Did you connect a coax cable between TG Output and SA Input before selecting the 'Power Sweep' settings?. You should see a ramp up to 10/11dB in 10 or 11 steps (I don't recall if it was 10 or 11).
Yes coax connected.. With settings all exactly the same as shown in the Rigol .pdf, I just get a flat-line at -20dB with both FW 01.012 & FW 01.09. Does your SA have the pin 7/8 jumper mod that keeps the trials alive?
Re. TG Power Sweep: No, I do not have U1105 Pins 7 and 8 connected together, as I have an older DSA818-TG (w/FW .12 now). Maybe that is doing something to your unit. I noticed that Howard's SA, and at least one other with his fix doesn't work either. It will be interesting to see if this is the cause, although I hope not, and it kind of seems unlikely.
TG Power Sweep works for me with firmware .12. Did you connect a coax cable between TG Output and SA Input before selecting the 'Power Sweep' settings?. You should see a ramp up to 10/11dB in 10 or 11 steps (I don't recall if it was 10 or 11).
Yes coax connected.. With settings all exactly the same as shown in the Rigol .pdf, I just get a flat-line at -20dB with both FW 01.012 & FW 01.09. Does your SA have the pin 7/8 jumper mod that keeps the trials alive?
Re. TG Power Sweep: No, I do not have U1105 Pins 7 and 8 connected together, as I have an older DSA818-TG (w/FW .12 now). Maybe that is doing something to your unit. I noticed that Howard's SA, and at least one other with his fix doesn't work either. It will be interesting to see if this is the cause, although I hope not, and it kind of seems unlikely.
Introduction to using 'TG Power Sweep'. See the attached PDF titled 'DSA815-TG, TG Power Sweep Mode'.
The new DSA815 firmware 00.01.12.00.02 works well, retains all installed options, adds features, and fixes.
Wall-E..can you share the features/fixes list?Here you go (one comment: I already had -30dBm on my TG before, not -20):
Change log : DSA800(DSP)Version Notes.doc
Version 00.01.12.00.02
Date 2014-11-10
- Increase the frequency offset function.
- Increase the switch between local and remote command.
- Increase the frequency of logarithmic function
- Increase the key lock function.
- Increase the traditional Chinese features.
- Increased access to frequency reference the status of a remote command.
- Increase sanitation function.
- Increase in Peak List can turn off the display line.
- Modify the option name information directly display option.
- Modify the Trace preservation order in CSV format, from a list of changes to the three column.
- To improve the quality of AM demodulation.
- Modify the “Clear All” for “Blank All”, and redefine the “Clear Write”.
- To solve the problem of inaccurate measurement of N dB.
- To solve the problem of freq Count is not accurate.
- To solve the problem of error loading an State file
- To solve the problem TX1000 instrument connection after the crash.
- The lower limit of TG range from -30dBm to -20dBm.
Also, I looked at my licenses and it seems like some are missing, like the 10hz RBW. But(!), I still have the ability to go down to 10hz RBW. Is this standard now?
hpux735:
The 10Hz RBW is still an Option in there, although it is not provided as a Trial because they don't sell it for the DSA815. When it is activated it will NOT show up in the Official list like the Trials do. Although once it is activated you will be able to find it listed as Option 0003 with the key code used to activate it in the Sys Info screens.
So, I made an LNA breakout board (based on the Skyworks 67015). I used my DSA815 to measure as much as I could. I know my methodology isn't perfect. I'm interested in opinions for how I could improve my methods. I couldn't get power sweep to work (I was using a zero span). I just saw in ted572's post that he's using 100hz span. I'll try that next time. I don't understand doing power sweep and frequency sweep at the same time... Anyway, here's the video if you're interested:
http://youtu.be/hA-5vE_2gG8
Yes 'Sweep' is mostly referring to a variation in the Frequency. Maybe a term like , " Power dynamic range" or "Power Linearity range" of DUT is better?
Why are there steps in the plot? are there Changes of internal attenuations ?
As you, this mode seems to have confused many users, and consequently they may feel that Power Sweep is not working in their DSA815-TGs. I believe they are probably all working fine, but due to Rigol not explaining the Power Sweep mode sufficiently (if hardly at all) has left many not understanding it in the least, and as a result seeing it as not functioning.
Edit: If you connect a coax cable between the TG Output and SA Input and set the DSA with the Example Measurement Settings shown here -> https://www.eevblog.com/forum/testgear/spectrum-analyzer-rigol-dsa815/?action=dlattach;attach=134859 you will see the results of Power Sweep without going thru an Amplifier. The results will show the amplitude steps, and be linear.