PERFORMANCE TEST
4 - 33
-
Only the timebase positions that are essential for instrument accuracy are
checked.
-
DEL’D TB TIME/DIV is electrically coupled to MAIN TB TIME/DIV; to check the
settings in the table press only the MAIN TB TIME/DIV VAR keys.
5
equirements for analog mode MAGNIFY off (
*
1):
DEL’D TB setting
MAIN TB setting Marker pulse
Max. error
5.00
µ
s
5.00
µ
s
0.5 ms
1.8%
20.0
µ
s
20.0
µ
s
20
µ
s
1.8%
5.00
µ
s
5.00
µ
s
5
µ
s
1.8%
1.00
µ
s
1.00
µ
s
1
µ
s
1.8%
500 ns
500 ns
0.5
µ
s
1.8%
100 ns
100 ns
0.1
µ
s
1.8%
50.0 ns
50.0 ns
50 ns
1.8%
20.0 ns (PM3390B/94B)
20.0 ns
20 ns
1.8%
Requirements for analog mode MAGNIFY on (
*
10):
DEL’D TB setting
MAIN TB setting Marker pulse
Max. error
100 ns
100 ns
0.1
µ
s
2.3%
10.0 ns
10.0 ns
10 ns
2.3%
5.00 ns
5.00 ns
5 ns
3.3%
2.00 ns (PM3390B/94B)
2.00 ns
2 ns
3.3%
4.3.28
Horizontal deflection; delay time multiplier
In this test the minimum and maximum delay time is checked.
Test equipment:
None
Settings/procedure and requirements:
1
-
Press the AUTOSET key.
2
-
Press the DTB menu key and select DEL’D TB ’on’ and MAIN TB ’on’ from
the appropriate menu .
3
-
Set MAIN TB to 500 ns.
4
-
Set DEL’D TB to 50.0 ns.
5
-
Separate the MAIN TB and DEL’D TB traces with the TRACK control.
6
-
Adjust the delay time to 500.0 ns using of the DELAY control (in the
DELAYED TIMEBASE section).
7
-
Adjust the start of the MAIN TB display exactly on the first graticule line by
using the X POS control (at maximum TRACE INTENSITY).