Delayed Timebase - Fluke CombiScope PM3370B User Manual

HOW TO USE THE INSTRUMENT

4.14 DELAYED TIMEBASE

DELAYED TIME BASE
s ns
DTB
TIME/DIV
• To magnify and display any detail of the signal displayed with the main
timebase.
• To permit more accurate timing measurements.
STANDARD SETTING
To start from a predefined state, you must recall the standard front setting.
- Simultaneously press the STATUS and TEXT
OFF keys.
- Connect the Probe Adjust signal to channel 1.
- Shift the trace to the upper half of the screen
as indicated.
DELAYED TIMEBASE
- Press the Delayed Timebase DTB key to enter
the DELAYED TIMEBASE menu.
- Press the 'DEL'D TB on off' softkey to turn on
the Delayed Timebase.
The main timebase trace and delayed timebase
trace are displayed simultaneously.
The upper trace is the Main Timebase trace. The Main Timebase trace shows an
intensified portion. It may be necessary to adjust the trace intensity with the
TRACE INTENSITY control to the left of the screen.
The lower trace is the Delayed Timebase trace. This represents the intensified
part of the upper trace.
Since all primary functions have dedicated keys and controls on the front panel,
the menu can now be turned off.
- Press the TEXT OFF button to turn off the menu.
The Delayed Timebase (DEL'DTB) has two basic
DELAY
functions:
ST6719
9303
1-
CH1 500mV MTB 1ms
MainTB and Del'dTB
1-
MTB 1ms
CH1 500mV DTB 0.1ms 4.300ms
4 - 63
ch1
ST6715
DELAYED
TIME BASE
DEL'D TB
on off
MAIN TB
on off
starts
trig'd
TRACE
SEP
T
ch1
ST6716