GE D90 Plus Instruction Manual page 526

TRANSIENT RECORDER
NOTE:
NOTE:
516
Sample Rate
Range: 16, 32, 64, 128, or 256 samples per cycle, or OFF
Default: 32
This setting selects the time-resolution of the transient record. A larger setting
necessarily results in a shorter record length.
Block Trigger
Range: any FlexLogic™ operand or shared operand
Default: OFF
When the operand assigned to this setting is asserted, all triggers to the transient
recorder are inhibited.
When changes are made to the transient recorder settings, all existing transient records
will be cleared!
The transient recorder will start collecting data upon power up or after the recorder is
cleared. If a trigger occurs immediately after a power up or the clearing of transient
records, and there is not enough pre-trigger data, then the pre-trigger will be set to the
amount of data collected and will not reflect the value specified by the user.
.
The transient recorder trigger logic is shown below.
Figure 445: Transient recorder trigger logic
CHAPTER 10: DIGITAL FAULT RECORDER
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL