rf-loop, would you be willing to go into exactly what bytes need to be changed for the longer modes? I can only see 1000s for the upper and 200ps and 500ps unused for the lower, as strings in the app? while I'm curious about those lower time bases, I would love to know what the modification procedure is.
i found small bug, only CH1 and CH3 affected, only when CH2 and CH4 are off. In fine adjust mode, 302mV/DIV is on wrong position. Seems to be only the case as well memory ans timebase dependent (14M 1ms->1ns, 1.4M 100us->1ns, 140k 10us->1ns, 1.4k 1us -> 1ns).
Tested on 8.1.6.1.26, hw1.3
EDIT: hmm, there is actually more like that, 1.54mV/DIV to 1.50mv/DIV, then very strange jumps/no move from 1.36mV to 780uV/DIV, then the wave jumps down by 2 DIVs down between 770uV/DIV and 750uV/DIV. Same as above, dependent on timebase and memory settings, this time CH1 more affected than CH3, no problem with CH2 and CH4.
Can someone check that? My DSO is for sure properly calibrated and still under quick warranty, so maybe i have to replace it.
500uv 183
510uV 182
520uV 181
530uV 180
540uV 179
550uV 178
560uV 177
570uV 176
580uV 175
590uV 174
600uV 174
610uV 173
620uV 172
630uV 171
640uV 171
650uV 170
660uV 170
670uV 169
680uV 168
690uV 168
700uV 167
710uV 167
720uV 166
730uV 165
740uV 165
750uV 154
760uV 154
770uV 199
780uV 198
790uV 197
800uV 196
810uV 196
820uV 195
830uV 194
840uV 193
850uV 192
860uV 192
870uV 191
880uV 190
890uV 189
900uV 189
910uV 188
920uV 188
930uV 187
940uV 186
950uV 186
960uV 185
970uV 184
980uV 184
990uV 183
1.00mV 183
1.02mV 182
1.04mV 181
1.06mV 180
1.08mV 179
1.10mV 178
1.12mV 177
1.14mV 176
1.16mV 175
1.18mV 174
1.20mV 174
1.22mV 173
1.24mV 172
1.26mV 171
1.28mV 171
1.30mV 170
1.32mV 170
1.34mV 169
1.36mV 168
1.38mV 168
1.40mV 167
1.42mV 167
1.44mV 166
1.46mV 165
1.48mV 165
1.50mV 154
1.52mV 154
1.54mV 199
1.56mV 198
1.58mV 197
1.60mV 196
1.62mV 196
1.64mV 195
1.66mV 194
1.68mV 193
1.70mV 192
1.72mV 192
1.74mV 191
1.76mV 190
1.78mV 189
1.80mV 189
1.82mV 188
1.84mV 188
1.86mV 187
1.88mV 186
1.90mV 186
1.92mV 185
1.94mV 184
1.96mV 184
1.98mV 183
2.00mV 183
2.06mV 181
2.12mV 180
2.18mV 178
2.24mV 177
2.30mV 175
2.36mV 174
2.42mV 173
2.48mV 172
2.54mV 171
2.60mV 170
2.66mV 169
2.72mV 168
2.78mV 167
2.84mV 167
2.90mV 166
2.96mV 165
3.02mV 164
3.08mV 164
3.14mV 163
3.20mV 162
3.26mV 162
3.32mV 161
3.38mV 160
3.44mv 160
3.50mV 190
3.56mV 189
3.62mV 188
3.68mV 188
3.74mV 187
3.80mV 186
3.86mV 185
3.92mV 184
3.98mV 183
4.04mV 182
4.10mV 181
4.16mV 181
4.22mV 180
4.28mV 179
4.34mV 178
4.40mV 178
4.46mV 177
4.52mV 176
4.58mV 176
4.64mV 175
4.70mV 175
4.76mV 174
4.82mV 173
4.88mV 173
4.94mV 172
5.00mV 172
5.10mV 171
5.20mV 170
5.30mV 169
5.40mV 169
5.50mV 168
5.60mV 167
5.70mV 166
5.80mV 166
5.90mV 165
6.00mV 165
6.10mV 164
6.20mV 163
6.30mV 163
6.40mV 162
6.50mV 162
6.60mV 161
6.70mV 161
6.80mV 160
6.90mV 160
7.00mV 159
7.10mV 159
7.20mV 158
7.30mV 158
7.40mV 158
7.50mV 187
Some suggestions to Siglent about messages and captions on the screen.
1. The captions on the screen should be in front of the waveforms and not transparent or almost not transparent. Currently they often become unreadable when they are crossed by waveforms.
I do only that I write wish list to "Santa Claus" (in this case Siglent) and then waiting christmas.
Yep, looks like there is something weird about the calibration for certain values, and seems to be related to VGAC it rolls over at 750uV, 1.50mV, 3.50mV, 7.50mV etc,
However the first 2 seem to have an error at the roll over. Equally it hints that it should be able to allow for as low as about 350uV / div on a hardware perspective. and up to about 12V/div on the upper,
To make clear, the C1:VGAC command is a com/query that you can use to manually set the variable gain amplifier, values between 15 - 199 seems to be the valid range used during device calibration, though it may be able to use the full 0-255, which would possibly allow all the way down to 100uV/div. room for imagination for anyone else who actually has gear to test accurate AC amplitude at crazy low amplitudes.
There is something else also being used during those step changes, but I have not yet found a command for it.
Below is the VGAC values for each vdiv step on my scope, you can see it goes a bit wonky at 750uV and 1.50mVCode: [Select]500uv 183
510uV 182
520uV 181
530uV 180
540uV 179
550uV 178
560uV 177
570uV 176
580uV 175
590uV 174
600uV 174
610uV 173
620uV 172
630uV 171
640uV 171
650uV 170
660uV 170
670uV 169
680uV 168
690uV 168
700uV 167
710uV 167
720uV 166
730uV 165
740uV 165
750uV 154
760uV 154
770uV 199
780uV 198
790uV 197
800uV 196
810uV 196
820uV 195
830uV 194
840uV 193
850uV 192
860uV 192
870uV 191
880uV 190
890uV 189
900uV 189
910uV 188
920uV 188
930uV 187
940uV 186
950uV 186
960uV 185
970uV 184
980uV 184
990uV 183
1.00mV 183
1.02mV 182
1.04mV 181
1.06mV 180
1.08mV 179
1.10mV 178
1.12mV 177
1.14mV 176
1.16mV 175
1.18mV 174
1.20mV 174
1.22mV 173
1.24mV 172
1.26mV 171
1.28mV 171
1.30mV 170
1.32mV 170
1.34mV 169
1.36mV 168
1.38mV 168
1.40mV 167
1.42mV 167
1.44mV 166
1.46mV 165
1.48mV 165
1.50mV 154
1.52mV 154
1.54mV 199
1.56mV 198
1.58mV 197
1.60mV 196
1.62mV 196
1.64mV 195
1.66mV 194
1.68mV 193
1.70mV 192
1.72mV 192
1.74mV 191
1.76mV 190
1.78mV 189
1.80mV 189
1.82mV 188
1.84mV 188
1.86mV 187
1.88mV 186
1.90mV 186
1.92mV 185
1.94mV 184
1.96mV 184
1.98mV 183
2.00mV 183
2.06mV 181
2.12mV 180
2.18mV 178
2.24mV 177
2.30mV 175
2.36mV 174
2.42mV 173
2.48mV 172
2.54mV 171
2.60mV 170
2.66mV 169
2.72mV 168
2.78mV 167
2.84mV 167
2.90mV 166
2.96mV 165
3.02mV 164
3.08mV 164
3.14mV 163
3.20mV 162
3.26mV 162
3.32mV 161
3.38mV 160
3.44mv 160
3.50mV 190
3.56mV 189
3.62mV 188
3.68mV 188
3.74mV 187
3.80mV 186
3.86mV 185
3.92mV 184
3.98mV 183
4.04mV 182
4.10mV 181
4.16mV 181
4.22mV 180
4.28mV 179
4.34mV 178
4.40mV 178
4.46mV 177
4.52mV 176
4.58mV 176
4.64mV 175
4.70mV 175
4.76mV 174
4.82mV 173
4.88mV 173
4.94mV 172
5.00mV 172
5.10mV 171
5.20mV 170
5.30mV 169
5.40mV 169
5.50mV 168
5.60mV 167
5.70mV 166
5.80mV 166
5.90mV 165
6.00mV 165
6.10mV 164
6.20mV 163
6.30mV 163
6.40mV 162
6.50mV 162
6.60mV 161
6.70mV 161
6.80mV 160
6.90mV 160
7.00mV 159
7.10mV 159
7.20mV 158
7.30mV 158
7.40mV 158
7.50mV 187
I chose my wording poorly, but for me that is low amplitude in the realm of a scope. And while I have plenty of signal sources, I lack any direct way to measure amplitudes that low with any hope of accuracy.
I agree its pretty noisy down at the 500uV range,
however It works on all attenuation ranges. so you can abuse it to view smaller signals on the larger offset ranges, e.g. 8mV / div at a +-21V offset range. or 70mV/div at a +-210V offset range, this is where I see it being much more useful,
Not sure if this had been posted here, but the analog frontend was reverse-engineered:
Not sure if this had been posted here, but the analog frontend was reverse-engineered:
https://github.com/360nosc0pe/siglent_hardware/tree/master/sds1202xe/siglent_AFE
I need to measure AC ripple on a 320V DC signal using AC coupling mode. SDS1004X-E input is rated for 400Vpk. Is this enough for my needs? (My worry is due to the fact that 400Vpk correspond to 280Vrms...)
I should also point out probes have there own voltage ratings, looking on the side of a random one I have on hand (X1: 150V, X10: 300V) its not a siglent probe, so check yours first.
If the probe cannot handle the voltage, but the scope can, it means you will just have to use a coax cable to measure it.
I should also point out probes have there own voltage ratings, looking on the side of a random one I have on hand (X1: 150V, X10: 300V) its not a siglent probe, so check yours first.
If the probe cannot handle the voltage, but the scope can, it means you will just have to use a coax cable to measure it.
Siglent example PP510 and PP215 and PB470
10x 600VDC (or AC peak)
1x 300VDC (or AC peak)
I should also point out probes have there own voltage ratings, looking on the side of a random one I have on hand (X1: 150V, X10: 300V) its not a siglent probe, so check yours first.
If the probe cannot handle the voltage, but the scope can, it means you will just have to use a coax cable to measure it.
Siglent example PP510 and PP215 and PB470
10x 600VDC (or AC peak)
1x 300VDC (or AC peak)
Just checked one of my siglent PP510 probes and it says this on the probe itself:
1x 150V
10x 300V
CAT II
user guide for that probe says:
max input voltage: 1X:150V RMS CAT II&10X:300V RMS CAT II
PP510 1X/10X attenuation, 85/18pf, 1M/10Mohm, 6M/100MHz, 300V/600V,
operating temperature -15 to 75 degrees