Philips PM3055 Operation Manual page 41

5-6E
5.4 TRIGGERING
CHARACERISTICS SPECIFICATION
ADDITIONAL INFORMATION
5.4.1 MTB triggering
@ Trig- mode
AUTO (auto free run) Bright line in absent
of trigger signal
Triggered
Single
@ Trigger source
A, B, Composite (AB), EXT,
Line
@ Trigger coupling
Peak to peak (p/p), DC, TVL,
TVF
@ Level range
Peak to peak Related to peak to
peak value.
DC
INTERNAL > +/-8 div.
EXTERNAL > +/— 800 mV
TVL/TVF Fixed level
@ Trigger slope ae 2
@ Trigger sensivity
INTERNAL
0 — 10 MHz <0.5 div.
@ 50 MHz < 1,0 div.
@ 100 MHz < 2,0 div.
EXTERNAL
0 — 10 MHz < 50mV
@ 50 MHz < 150 mV
@ 100 MHz < 500 mV
TVL/TVF INTERNAL <0,7 div.
EXTERNAL < 70 mV
Auto free run start 100 ms (typ) after no
trig-pulse.
Switch automaticly to auto free run if one
of the display channels is grounded.
In multi-channe! mode (alternate) each channel
is armed after reset; if sweep is already started,
sweep is not finished.
Line trigger source always triggers on main
frequency.
Line trigger amplitude is depended on line
input voltage.
Approx. 6 div. @ 220 V a.c, input voltage.
p/p coupling is DC rejected.
Slope sign in LCD
+ for POS. and — for NEG. VIDEO
Trig. coupling DC.
Trig. coupling DC.
Trig. coupling DC.
Trig. coupling DC,
Trig. coupling DC.
Trig. coupling DC.
Sync. pulse.
Sync. pulse.
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