Casio QV-770 Service Manual page 8

Strobe trigger waveform
1. Normal waveform TIME
VOLTS : 1 V/DIV
CH1
1V
First positive
pulse.
ACQUIRE
NORMAL
2. NG waveforms when trigger skipping occurs.
(1) When trigger skipping occurs on the first
positive pulse.
: 1 µ sec/DIV
OK if second positive pulse is shown.
First negative
pulse.
1
AVS
ENVELOPE
— 6 —
757µV
1µV
2 REPET SAVE ON
ON | OFF ON | OFF
(2) When trigger skipping occurs on the first
negative pulse.
UERT