Fig. 19. Data Hold Connection - Philips PM2521 Gebrauchsanleitung

47
SPECIAL TRIGGER MODE WITH DATA HOLD PROBE PM 9263 (Refer to Fig. 27, page 150).
— Connect the PM 9263 with the DIN plug and the banana-plug connector (VL2-0) to the corresponding
terminals of the PM 2521.
— Connect a zero lead to the probe. This can be done:
1. With separate banana lead connected to the 0 socket of the probe.
2. With the zero cable which is supplied with the PM 9263.
— Select the most suitable test pin for the probe.
— Push the slide switch (white ring) in position RUNNING, away from the probe tip.
— Measure the input signal as described under heading "Selection of the sensitivity ranges".
— Select the correct trigger level as described under heading "Selection of the trigger level" in "NORMAL
TRIGGER MODE".
— Select function s with the function selector first.
— Push the slide switch on the probe to position HOLD, towards the probe tip (Refer to Fig. 19).
Remark:
The PM 2521 triggers in + trigger level mode at a positive (start) and negative (stop) crossing of the trigger
level. In — trigger level mode the PM 2521 triggers at a negative (start) and a positive (stop) crossing of the
trigger level. ''
5
8
DATA HOLD
ZERO
PROBE
(FRONT VIEW)
RUNNING
DATA HOLD
*
ST 3165
620273
Fig. 19. Data Hold connection
Time measurements
* — Select function s with the function selector.
Remark:
The PM 2521 will display the time between two crossings of the trigger level, (++) or (-). In special trigger
mode the trigger points are (+ —) or (— +). The time measurement is started at the first crossing and stopped
after the second crossing. When the measuring of the time is stopped the measured value will be displayed.
The available ranges in the time functions are: 10"*s, 10^s, 10^s, 10^s, 10^s.
The ranges are selected automatically.
When a time measurement is started the PM 2521 automatically selects the 10^s range.
— To start a new measurement proceed as follows.
Reset the PM 2521 by depressing pushbutton STOP/RESET.
Remark:
The display will jump to zero and the PM 2521 will start a new measurement after a crossing of the trigger level.
— To stop a measurement proceed as follows.
Depress pushbutton STOP/RESET while the PM 2521 is measuring.
Remark:
The time measured will be displayed.
To start a measurement, depress pushbutton STOP/RESET again.