Philips PM3055 Operation Manual page 19

3.2.4 Function control area
cr
cD sequence
3-5E
SOFTKEY REMARKS
AUTO
S O N Y cd arte i INPUT SIGNAL
iene me IS INTERRUPTED
(INPUT SIGNAL
FED TO
ATTENUATOR A
AC-COUPLED
OC-COUPLED
INPUT
CHANNEL A AND B
DISPLAYED
CHANNEL B
DISPLAYED
A CHANNEL A
DISPLAYED
NO CHANNEL
DISPLAYED
auto Softkey to set automatically the attenuator/s
V/DIV and time speed s/DIV to an optimal
diplay, provided that the Y POS and X POS
controls are in mid-position.
sxo Interruption of channel A input signal, while
the attenuator is connected to ground.
Note: 1. When grounded the trig. mode will
automatically set to auto free-run.
2. When grounded the composite trig.
source will automatically set to
ch. B trig. source, provided that a
signal is applied to ch. B.
acec Channel A input coupling.
AB
Selection for the vertical display modes channel
A and channel B.