Philips PM 5775 Manual page 25

33
A.10. Switch GATED/CONT, input TRIGG/GATE IN
'In position CONT., the internal multivibrator is in operation. The GATED mode is
used for internal operation, externally gated. A gating signal applied to input
TRIGG/GATE IN, P1, will-control the output so that burst pulses are obtained.
The length of each burst is determined by the gate pulse width. The correct
relationship between the pulse-width and repetition time of the PM 5775 (PM 5776)
and those of the external pulse source are shown in Figure VI-7.
n PULSES .
pau eniey
tw
twi
| ~;
| | | | | | | | | | | | | | | | OUTPUT SIGNAL AT SOCKET
1 H PULSE OUT PM5775 (PM5776)
UT twi< Tl
EXTERNAL GATING SIGNAL
H APPLIED TO SOCKET
tw2 j TRIGG/GATE IN {Pl)
| i
ak
|
ee
MA6432
tw2 =n x Ti
tw2 <T2
Fig. VI-7. Time settings at gated-pulse operation
A.11. Switch REPETITION TIME, position TRIGG. or SINGLE SHOT
In this position the internal multivibrator is inoperative. By applying a trigger
signal of at least 1.2 V amplitude to input TRIGG./GATE IN, P1, the pulse
generator is controlled externally.