Philips PM3320 Operating Manual page 58

4-38E
4 EV/EXT CLK>
After selecting EV/EXT CLK the COUPLING EV/EXT CLK menu is
displayed and the trigger levels and trigger slope can be selected.
COUPLING
EV/EXT CLK
TTL 41
ECL 2
ee
> 4
+148 V }
- 5 j
ony 6
SLOPE + - 7
RETURN 8
ORC a Se Pa RY
4 1 TTL
After pushing softkey TTL, the text TTL is intensified and the trigger level of the
EVENTS/EXT CLOCK inputis set for TTL signals. The trigger level is indicated by a
mark E on the left side of the C.R.T. screen.
4 2 ECL
After pushing softkey ECL, the text ECL is intensified and the trigger Jevel of the
EVENTS/EXT CLOCK inputis set for ECL signais. The trigger level is indicated by a
mark E on the left side of the C.R.T. screen.
4 3 VAR
After pushing softkey VAR, the text VAR is intensified and the trigger level of the
EVENTS/EXT CLOCK input can manually be set by the trigger level control. The
trigger level is indicated by a mark E on the left side of the C.R.T. screen and the
actual value is displayed in the softkey text area.
4 400 se
4 5 -_
4 6 -