FreeWave enables the full screen image transfer from Oscilloscope to PC via USB port in a fast-updating manner, so the user is able to see a nearly-real-time display on the PC screen. The screen image (.bmp or.jpg) and waveform raw data (.csv) could be saved into PC for further applications.

The continuous waveform images (.wav) in a time period could be recorded for later playback. This video recorder function facilitates the repetitive observation of a saved waveform with continuous variation in a certain period of time.

To fully usage of FreeWave software, User needs to install following softwares before the Freewave installation.

• Windows .Net Frame Work 1.1 or later
• Windows Media Encoder 9 series

On an oscilloscope, roll mode is a method of displaying acquired waveform data without waiting for the complete waveform record. For example, if a sweep was 10 divisions long with a rate of one second per division, and roll mode wasn’t available, it would take 10 seconds to fill the waveform record. But using roll mode, the oscilloscope will immediately begin displaying results rather than waiting the full 10 seconds.

When operator enables the "roll mode", the waveform continuously moves data across the display from right to left and old data will be replace by new input data. It allows you to see dynamic changes on low frequency.

The Freewave is general software. GW Instek only provides this tool to users an easy way to capture the measurement data from PC for further analysis. Any special or dedicated operation, User can program by themselves on their platform. We provide all the commands on user manual for user reference.

Please confirm the following steps :
1. Selected channel bus and right click and group it
2. Select the Tools menu --> Bus Property -->  SPECIAL BUS, and than you can chooses IIC or SPI or UART  Bus function

See UTILITY --> F4 (System Info)

See UTILITY --> F5 (More) --> F2 (System Info)

All of the DSO ,including GDS-1000-U/ 2000A and 3000 Series are common ground design for each channel, not isolated between each channel.

GOS-630FC is an analog type oscilloscope with digital control, but not a digital type oscilloscope (DSO). For CD/DVD signal measure application purpose, we think using analog type oscilloscope is better than using digital type oscilloscope. Analog type oscilloscope has faster update rate and real time waveform display, which digital oscilloscope (DSO) can not perform as well.

However, if you must get eye-pattern, the best way would be using a very high-end DSO (much more accurate). But unfortunately, neither GOS-630FC nor GDS-2000A (GWInstek DSO) can do eye-pattern.

GDS-6000A just only provide time domain measurement not support frequency domain analysis.
If they interesting frequency spectrum measurement, please consider our GDS series (Digital Storage Oscilloscope) FFT measurement or GSP series (Spectrum analyzer) to analysis.

We did agree with you that GOS-6031 is a good choice.
But the end user needs to purchase a HV (High Voltage) differential probe to measure 1200V peak-peak.

Because of CRT relation of physical characteristics so the trace of the oscilloscope is very easy to be influenced, so when you change the direction of the oscilloscope, usually the trace will be influenced by magnetic field of the earth, which is the reason why the oscilloscope usually all have a Trace Rotation function.

Because CRT of 30MHz does not have Third Accelerating Anode (P3) to accelerate the high voltage, so the luminance of trace should not be too bright.