29
A.
Timing
The following timings apply for PP600F V001.
The delay from trigger to the start of the pulse is dependent on the output
current as shown in the table below.
Output Current (mA)
Minimum Pulse Delay
(microseconds, approximate)
10
155
20
80
30
55
50
35
100
20
300
11
500
10
2000
9
5000
8
Note that the delay is dependent on the voltage of the trigger signal (INPUT1
or INPUT2). A lower trigger input voltage gives a longer delay. The values
above apply for a trigger input voltage of 18V to 24V. A trigger input of only
5V will result in approximately an additional 8us delay.
The repeatability of the pulse delay is +/-1 microsecond and of the pulse width
is +/-0.1 microsecond when there is no RS232 data sent to the unit.
Data on the RS232 port will increase the variation in the pulse delay but not the
pulse width.
After a trigger occurs, the PP600F halts all other operations while the pulse
delay and pulse width periods occur. This means that if both trigger inputs
happen simultaneously, then the output pulse for one trigger will be delayed
until the other has finished.
Also changes in selected mode may be delayed while a pulse occurs.
