APPLICATION
4-CHAIMNEL APPLICATION
The sensitivities of CH1 to CH4 are calibrated and each
channel has 100 MHz band width. The trigger signals of
CH3 and CH4 can be obtained from each preamplifiers.
This unit can be used not only for external synchronization
but also for checking 4-Channel at a time.
Application
1.
Checking logic signal timing
2.
Monitoring video signal
3. Measuring audio signal gain and phase characteristics
The details of the logic signal timing checking are described
below.
Logic signal timing indication
Control setting
V. MODE: QUAD, ALT A. SOURCE: CH3
H. DISPLAY: A
To obtain stable synchronization, synchronize with the
longest period channel (in this case, CH3).
In the above application, when the H. DISPLAY control is
set to ALT, the main and delay sweep waveforms are dis-
played on the CRT at a time. The portion in which the inten-
sity is modulated is enlarged to enable easy checking.
Main and delay sweep waveforms (Magnified by
10 times)
Control setting
V. MODE: QUAD, ALT
A. SOURCE: CH3
H. DISPLAY: ALT
STARTS AFTER DELAY: PULL (ON)
Main sweep
Delay sweep
DUAL SWEEP APPLICATION
In this mode, two trigger sweep circuit systems can display
different period signals without intensity difference.
Video FRAME and LINE signal waveforms
Control setting
Input signal: CH
1
V. MODE: CH 1
H. DISPLAY: DUAL A. TRIG SOURCE:CH 1
A. COUPLING: VIDEO B. TRIG SOURCE:CH 1
B. COUPLING: AC A SWEEP TIME/DIV. 5ms
B. SWEEP TIME/DIV: 20/xs
In one waveform display mode, the A and B. TRIG. SOURCE
control operation is as described in the front panel. For two
or four waveform display mode, refer to the next
item.
A
sweep
B sweep
Divider circuit waveforms
Control setting
V. MODE: QUAD, ALT H. DISPLAY: DUAL
A. SOURCE: CH 1, B. SOURCE: CH2
A. SWEEP TIME/DIV: 5ms
B. SWEEP TIME/DIV:
0.5/LIS
CH
1
and CH3: 100 Hz signal input
CH2 and CH4: 1 MHz signal input
With this method, when the sweep ratio is set to 10,000
times,
the intensity does not change and different period
waveform can be synchronized.
When H. DISPLAY control is set to DUAL and two or four
waveforms are displayed, the CH1 and CH3 waveforms are
displayed in A sweep mode and CH2 and CH4 waveforms
are displayed in B sweep mode. Therefore, adjust the A and
B. TRIG SOURCE control accordingly.
5-13
To Next Page
Loading...
