FAQs
Search by Category
Search by Keyword
Q1 gw_product_detail_bar.png gw_product_detail_bar.png May I use GDS-2000A’s logic analyzer probe to MSO-2000E?

The logic analyzer probe is not universal. Only probe clips are allow to share.

Q2 gw_product_detail_bar.png gw_product_detail_bar.png What is the main difference between MDO-2000A and MDO-2000E series?

Please see below table

  MDO-2000A MDO-2000E
Bandwidth 300M/200M/100MHz 200M/100M/70MHz
Sampling rate 2GSa/s interleaved 1GSa/s interleaved
Memory depth 20M/CH 10M/CH
Channel 2 2 or 4
25MHz Function generator Only on MDO-2000AG model Yes
Q3 gw_product_detail_bar.png gw_product_detail_bar.png How can I set frequency domain waveform display appropriately?

Please see the main frequency value on the frequency counter on the time domain. Then set this value to center frequency of spectrum analyzer function.

Please note following 3 formula to set other parameters to get the appropriate display.

  1. Center frequency=(start frequency +stop frequency)/2
  2. Stop frequency-start frequency=Span
  3. RBW=sample rate /length of FFT
Q4 gw_product_detail_bar.png gw_product_detail_bar.png Why the max. frequency range for spectrum analyzer function is 500MHz, not as same as the max. bandwidth 200MHz?

The max. frequency range for spectrum analyzer function is 1/2 of max. sampling rate which is limited at DSP Nyquist theory.

Q5 gw_product_detail_bar.png gw_product_detail_bar.png Why the frequency counter is not display on the GDS-2000E

Please check the trigger setup. The frequency counter will not display when set on Alternate trigger ;pulse runt trigger and bus trigger.

Q6 gw_product_detail_bar.png gw_product_detail_bar.png How come my digital filter function cannot use?

The digital filter function is not support under Average mode acquisition; ATL trigger; Roll mode; Segmented memory activate and the time base range setup is <=50ns/div.

Q7 gw_product_detail_bar.png gw_product_detail_bar.png What is the main difference between GDS-1000B and GDS-2000E series?

GDS-2000E provided bus decode function; segment memory; waveform search function which not on the GDS-1000B.
For the sampling rate comparison, both series are max. 1GSa/s.For GDS-2000E series ,the max. sampling rate will keep 500MSa/s for 4CH activate and 2CH activate will keep 1GSa/s. However, for GDS-1000B series, the max. sampling rate will reduced to 250MSa/s for 4CH activate and 2CH activate will reduced t0 500MSa/s.

Q8 gw_product_detail_bar.png gw_product_detail_bar.png Why the input square waveform is looks like sine waveform in the oscilloscope.

When the rise time or fall time of square signal is close to the period, the display waveform will looks like sine waveform.
For example, to test 25MHz square waveform.
The rise time is 0.35/25MHz=0.014us. The period is 1/25MHz=0.04us.
Since the rise time is close to the period ,the output waveform will looks like sine waveform.

Q9 gw_product_detail_bar.png gw_product_detail_bar.png What are the test regulations for EN61000-6-4?
The test regulations of EN61000-6-4 are general standards used to define the EMI standard under industrial environments, which is the standard of Class A. Its regulations are the same as those of EN55011A. The regulations for conducted and radiated tests are as follows:

Frequency Range, MHz

QP limits (dBuV)

AVG limits (dBuV)

0.15 ~ 0.5

79

66

0.5 ~ 30

73

60

EN61000-6-4 Conducted test regulations

Frequency Range, MHz

QP limits (dBuV)

30 ~ 230

40

230 ~ 1000

47

EN61000-6-4 Radiated test regulations

Q10 gw_product_detail_bar.png gw_product_detail_bar.png The EN55015 regulation primarily defines the conducted (CE) test for LED luminaires. What are the test regulations for radiated test (RE)?
The radiated (RE) test regulation EN55015 is mainly defined in the test range of 30MHz ~ 300MHz. For different test sites, the defined test regulations will be different. The test regulations of 3m can be set by referring to the test lead of EN55022A. If the test regulation of 10m is adopted, refer to the test lead setting of EN55022B.

Frequency Range, MHz

QP limits (dBuV)

AVG limits (dBuV)

3m distance

10m distance

30 ~ 230

40

30

230 ~ 300

47

37

Q11 gw_product_detail_bar.png gw_product_detail_bar.png Does GW Instek have EN55025/ISO16750 automotive conducted EMI test kit?
The frequency band for automotive electronics testing in the conducted section is from 10 kHz to 108 MHz and the test must be collocated with a dedicated DC LISN. GW Instek GLN-5040A is a LISN that uses AC power and cannot be used for conducted EMI measurement of automotive electronics. However, GSP-9330 can conduct the above-mentioned test while collocating with a DC LISN of other brands.
Q12 gw_product_detail_bar.png gw_product_detail_bar.png What is the difference between the 9kHz and 150kHz on the GLN-5040A?
Different products will use different regulations for EMC testing according to their electrical characteristics. According to the existing regulations, in the conducted test, 9 kHz is suitable for the conducted test of lighting equipment, and 150 kHz is suitable for the conducted test of general audio-visual equipment, household appliances and information products.
The following table is a list of regulations and conducted EMC test frequency ranges for products in various commonly used categories.
9k ~ 30MHz

Lighting fixtures and equipment

EN55015/CISPR15

150k~30MHz

Lighting fixtures and equipment

EN55015/CISPR15

Industrial, scientific, medical products (1)

EN55011/CISPR11

Audio and video equipment

EN55013/CISPR13

Household and similar equipment

EN55014-1/CISPR14-1

Information products and office equipment

EN55022/CISPR22

(1) Industrial, scientific, and medical products under the FCC's regulations, the frequency range of EMC conducted testing is 9k~30MHz.
of
23