Arbiter Systems Portable Power Sentinel 933A Operation Manual page 162

Table 9.3: Trigger Channel Parameter Summary (32 Channel)
Function
Input Signal
Channel
Trigger Dependency
Master Channel
Limit Type
Dwell (delay) time
Limit Value
Reference Value
Table 9.4: Schulz-Laios Transient Detector Algorithm Control
(6 Channel)[1]
Function
T1
T2
Oscillatory detector
Reset threshold
Input Signal
Channel
[1] Schulz, Richard P. and Beverly B. Laios, Triggering Trade offs for Recording
Dynamics, IEEE Computer Applications in Power ; April 1997, pp. 44ff
[2] Hauer, John F., and Fazlollah Vakili, An Oscillation Detector Used in the BPA
Power System Disturbance Monitor, IEEE Transactions on Power Systems, Vol.
5 No. 1, Feb. 1990, pp. 74ff
Range or Options
1-31, per Table A.2 above (set to 0 if not
used)
0-3, per right column in table above
0-2, Off, Active, Inactive
0-31, any other trigger channel
0-3;
0-65535, 50 ms/count; 0 to 3276.5 seconds
Floating Pt, in measurement units (volts,
watts, . . . )
Floating Pt, in measurement units (volts,
watts, . . . )
Range or Options
High-pass (rate detector) time constant, sec-
onds Minimum 0.05 seconds, typical 0.5 sec-
onds
Oscillatory detector low-pass time constant,
seconds Minimum 0.05 seconds, typical 5.0
seconds
Threshold in measurement units. Set to any
negative number to disable reset
0-31, per Table A.2
0-3, per right column in Table A.2
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