Elspec G3500 BlackBox, User And Installation Manual

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FFT Mode
The FFT Mode is a built-in capability applicable only to the G4500 BLACKBOX. The sampling rate for
the G4500 is 1,024 samples per cycle for Voltage & 256 samples per cycle for Current. Or
alternatively, the sampling rate may be switched to 512 samples per cycle for Voltage & 512
samples per cycle for Current.
CONFIGURING THE FILE CAPACITY PARAMETER:

Access your Portable BLACKBOX Unit's PQZIP Configuration via the
PQZIP Recording Tab

In the PQZIP Configuration section, go to the FFT Mode & from the drop-down selection
select the applicable Ratio:
Select:

File Capacity: Used for setting compression at every: 5min; 30min; 60min; 90min; 120min &
150min (Increased frequency will produce more files - therefore set the frequency according
to your network capacity)

FFT Mode: The sampling rate setting reflected from the drop down selection is half of the
actual sampling rate - V:512 I:128 & V:256 I:256. To set your sampling rate select:

V:512 I:128 for actual 1,024 (Voltage) & 256 (Current) samples per cycle

V:256 I:256 for actual 512 (Voltage) & 512 (Current) samples per cycle

To apply your changes select

You will receive the following success message:

To view your changes (refresh your current view) select