Products > Test Equipment
Siglent ISFE, scope front end isolator, any opinions?
tautech:
With the release of the Siglent SDS1000X series DSO's and R2 FW for the SDS2000 series Siglent now has the 200:1 matching attenuation settings for their ISFE.
As a result OSD vertical measurements are now reasonably accurate.
Although the ISFE provides only a 1 MHz BW it does provide a safe method of isolation for scopes and users.
Max input voltages:
Per channel +/- 600V pk
Max floating voltages:
Channel reference (Gnd) to Earth ground 1000V rms
Between isolated channels 2000V rms
As connected with SDS1202X DSO measuring probe Cal waveforms (3V 1 KHz)
Waveform position and settings adjusted for best viewing. Full BW. No Filters.
Ch 1: Siglent scope probe 1:1
Ch 2: ISFE supplied alligator lead 1:1
USB lead from another device powers ISFE as USB port needed for screen captures
ISFE supplied lead shows least over/undershoot (Ch 2)
Eres mode
nctnico:
Did you adjust the probe? That could be the source of the overshoot. Overshoot indicates the frequency response will be off (or wrong).
tautech:
--- Quote from: nctnico on September 24, 2015, 10:03:14 am ---Did you adjust the probe? That could be the source of the overshoot. Overshoot indicates the frequency response will be off (or wrong).
--- End quote ---
AS the ISFE is optimised for the supplied Alligator leads, AND 1:1 input I suspect scope probes that are for 1M Ohm inputs may not work correctly. :-\
How would you suggest I check the ISFE front end impedence over a representitive portion of its 1 MHz BW?
rf-loop:
--- Quote from: tautech on September 25, 2015, 01:32:59 am ---
--- Quote from: nctnico on September 24, 2015, 10:03:14 am ---Did you adjust the probe? That could be the source of the overshoot. Overshoot indicates the frequency response will be off (or wrong).
--- End quote ---
AS the ISFE is optimised for the supplied Alligator leads, AND 1:1 input I suspect scope probes that are for 1M Ohm inputs may not work correctly. :-\
How would you suggest I check the ISFE front end impedence over a representitive portion of its 1 MHz BW?
--- End quote ---
Input Impedance: 10M ohm (this is enough for think normal 1Mohm probe comp adjust do not perhaps work)
For input C can not find specs.
tautech:
--- Quote from: rf-loop on September 25, 2015, 02:25:02 am ---
--- Quote from: tautech on September 25, 2015, 01:32:59 am ---
--- Quote from: nctnico on September 24, 2015, 10:03:14 am ---Did you adjust the probe? That could be the source of the overshoot. Overshoot indicates the frequency response will be off (or wrong).
--- End quote ---
AS the ISFE is optimised for the supplied Alligator leads, AND 1:1 input I suspect scope probes that are for 1M Ohm inputs may not work correctly. :-\
How would you suggest I check the ISFE front end impedence over a representitive portion of its 1 MHz BW?
--- End quote ---
Input Impedance: 10M ohm (this is enough for think normal 1Mohm probe comp adjust do not perhaps work)
For input C can not find specs.
--- End quote ---
Exactly.
Thank you.
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