Philips PM2521 Operating Manual page 23

22
2.1.10. Time measurements (s)
Ranges
Resolution
Number of representation units
Accuracy foretime measurements
Counting'frequency
4 Hold off time
Start
Stop
Reset
Sensitivity
4
Trigger modes (Start/Stop)
Trigger level adjustment
Seconds
101 102 103 104 105
100/isinthe 10% range
99999
± (0,005 % of reading +0,001 % of range)
100 kHz
1 0 ms
By a crossing of the trigger level
By a crossing of the trigger level or by depressing pushbutton
STOP/RESET
By depressing pushbutton STOP/RESET
DC ... 1/is pulse : 100 mV
1 /is ... 100 ns pulse : 200 mV
On positive going crossings of the + trigger level
On negative going crossing of the — trigger level
With data hold probe PM 9263
On positive and negative crossings of the + trigger level
On negative and positive crossings of the —trigger level
With thumbwheel at the front of the PM 2521
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4