Trigge Ring - Philips PM3055 Service Manual

2-8
CHARACTERISTICS
2.4
TRIGGERING
2.4.
MTB t rigge ring
l
* Trig.mode
AUTO (au t o free
run)
Triggered
Si ng le
* Trigger source
A, B, Composi t e
(AB) , EXT, Line
* Trigger c oupling
Pe ak-t o-peak (p-p ) ,
DC, TVL, TVF
* Leve l range
Pe ak-t o-pe ak
DC INTERNAL
DC EXTERNAL
TVL/TVF
* Trigger sl ope
* Trigger sensi-
vi ty
INTERNAL
0 - 10 MHz
5 0 MHz
@
lOO
@
EXTERNAL
0 - 10 MHz
5 0 MHz
@
100 MHz
@
TVL/F INTERNAL
EXTERNAL
----
SPECIFICATION
Brig ht line in
absence of t rigger
signa l
Re l a ted t o pe ak ­
t o-pe ak
> ( + or - 8 d iv. )
> ( + or - 80 0 mV )
F i xed leve l
+I-
0 , 5 d iv .
<
1 '0 d iv.
<
3, 0 d iv.
MHz
< 5 0 mV
< 150 mV
500 m V
0 , 7 d iv.
<
< 70 m V
INFORMATION
ADDITIONAL
Aut o free run st art s 100 ms
(typ. ) afte r no t rig.p u lse.
Swi tc he s aut omat ical ly t o auto
free run if one of t he d i splay
c hanne l s is grounded.
In mul t i-c hanne l mode (al t e r­
nat ed ) eac h c hanne l is armed
after re se t ; i f sweep has
a lready st art ed , sweep is not
finished. Not app li c ab le in
peak t o peak c oupling .
Line t rigge r source a lways
t rig gers on ma in frequency.
Line t rigger amp li t ude depe nds
on line i nput vol t age.
Ap prox. 6 d iv . 220 VAC i npu t
@
vol tage.
p-p c oupl ing is D C
Slope sign i n LCD and + or - if
TVL/F in c hosen for posi t ive
or negat ive vid e o.
Trig. c oupl ing DC.
Trig. c oupling DC.
Trig. c oupl ing DC.
Trig . c oup ling DC.
Trig. c oupling
DC.
Trig. c oupling DC.
Sync. pulse.
Sync . pulse .
rejec ted.