Chapter II
22
30 MHz
oscilloscope
6.3.
Trigger system
Specifications
Comments
Sources
Sensitivity in normal mode - Trigger from 0 to 40 MHz
CH1 or CH2
0.5 div. 0 to 10 MHz
1 div.
10 to 20 MHz
1.5 div. 20 to 40 MHz
ALT
Source depending on display mode:
CH1 trigger CH1
CH2 trigger CH2
ALT trigger CH1 then CH2
CHOP ditto ALT mode
ADD trigger CH1
-CH2 trigger CH2
LINE
synchronization on mains
EXT
50 mVrms
0 to 10 MHz
protection ± 420 V (DC + AC peak,
f < 1 kHz)
100 mVrms
10 to 20 MHz
input impedance: 1 M
Ω
// 25 pF
700 mVrms
20 to 40 MHz
Filters (coupling)
Bandwidth
AC
10 Hz to 40 MHz
DC
0 Hz to 40 MHz
LFR (rejection) 10 kHz to 40 MHz
HFR (rejection) 0 Hz to 10 kHz
Horizontal mode
AUTO
Automatic mode
Normal
Triggered mode
Slope
Falling edge
Rising edge
Level
Adjustment range:
Normal mode: ±12 divisions
6.4.
Calibration signal
Shape
rectangular
Amplitude
2.5 V ± 1%
Frequency
1 kHz ± 1%
6.5.
AUTOSET mode
•
Signal search time
≈
5 s
•
25 Hz
≤
signal frequency
≤
30 MHz
•
50 mVpp
≤
amplitude without probe
≤
160 Vpp
6.6.
General characteristics
Cathode ray tube
Type
rectangular 13 cm diagonal with internal grid
Graticule
8 vertical divisions with 5 sub-divisions
10 horizontal divisions with 5 sub-divisions
1 division = 1 cm
Screen
GY phosphorus with average persistence
Trace
adjustment of trace rotation, focusing, light intensity
Total acceleration voltage
2 kV