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HOW TO USE THE INSTRUMENT 4 - 63
4.14 DELAYED TIMEBASE
The Delayed Timebase (DEL’DTB) has two basic
functions:
• 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 MainTB and Del’dTB
- 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.
DTB
TIME/DIV
s
ns
DELAY
DELAYED TIME BASE
ST6719
9303
CH1
500mV
ch1
ST6715
MTB 1ms
1-
DELAYED
TIME BASE
CH1
500mV
ch1
ST6716
DEL’DTB
onoff
MAINTB
onoff
starts
trig’d
TRACE
SEP
T
MTB 1ms
DTB 0.1ms 4.300ms
1-