GE Multilin G60 Generator Management Relay 5-235 SETTINGS 5.2 PRODUCT SETUP55.2.8 OSCILLOGRAPHYa) MAIN MENUPATH: SETTINGS ! PRODUCT SETUP !" OSCILLOGRAPHYOscillography records contain waveforms captured at the sampling rate as well as other relay data at the point of trigger.Oscillography records are triggered by a programmable FlexLogicô operand. Multiple oscillography records may be cap-tured simultaneously.The NUMBER OF RECORDS is selectable, but the number of cycles captured in a single record varies considerably based onother factors such as sample rate and the number of operational CT/VT modules. There is a fixed amount of data storagefor oscillography; the more data captured, the less the number of cycles captured per record. See the ACTUAL VALUES !"RECORDS !" OSCILLOGRAPHY menu to view the number of cycles captured per record. The following table provides sam-ple configurations with corresponding cycles/record.A new record may automatically overwrite an older record if TRIGGER MODE is set to ìAutomatic Overwriteî.Set the TRIGGER POSITION to a percentage of the total buffer size (e.g. 10%, 50%, 75%, etc.). A trigger position of 25% con-sists of 25% pre- and 75% post-trigger data. The TRIGGER SOURCE is always captured in oscillography and may be anyFlexLogicô parameter (element state, contact input, virtual output, etc.). The relay sampling rate is 64 samples per cycle.The AC INPUT WAVEFORMS setting determines the sampling rate at which AC input signals (i.e. current and voltage) arestored. Reducing the sampling rate allows longer records to be stored. This setting has no effect on the internal samplingrate of the relay which is always 64 samples per cycle, i.e. it has no effect on the fundamental calculations of the device.When changes are made to the oscillography settings, all existing oscillography records will be CLEARED.# OSCILLOGRAPHY#NUMBER OF RECORDS:15Range: 1 to 64 in steps of 1MESSAGE TRIGGER MODE:Automatic OverwriteRange: Automatic Overwrite, ProtectedMESSAGE TRIGGER POSITION:50%Range: 0 to 100% in steps of 1MESSAGE TRIGGER SOURCE:OffRange: FlexLogicô operandMESSAGE AC INPUT WAVEFORMS:16 samples/cycleRange: Off; 8, 16, 32, 64 samples/cycleMESSAGE # DIGITAL CHANNELS#MESSAGE # ANALOG CHANNELS#Table 5ñ1: OSCILLOGRAPHY CYCLES/RECORD EXAMPLE# RECORDS # CT/VTS SAMPLERATE# DIGITALS # ANALOGS CYCLES/RECORD1 1 8 0 0 1872.01 1 16 16 0 1685.08 1 16 16 0 276.08 1 16 16 4 219.58 2 16 16 4 93.58 2 16 64 16 93.58 2 32 64 16 57.68 2 64 64 16 32.332 2 64 64 16 9.5WARNING
