SME Test Procedure
1038.6002.02 5.39 E-13
À Settings at the Oscilloscope
- Time base 20 ns/div,
- both channels 2 V/div,
- Triggering from the SYNC signal.
SYNC output......Pulse sequence with a pulse width of 40 ns ±10 ns
VIDEO output .....Pulse sequence with a pulse width of 20 ns ±4 ns,
the first edge appears after the first edge of the SYNC signal
by the pulse delay of 60 ns (-13ns,+ 23 ns).
SYNC and VIDEO output............................................Period 100 ns,
Note: The period is derived from the internal reference frequency
and has its accuracy. There must be no error within the frame
of the measuring accuracy of the oscilloscope.
Double pulses À Settings at the SME
In menu MODULATION/PULSE
- DOUBLE PULSE STATE ON,
- WIDTH 20 ns,
- DOUBLE PULSE DELAY 60 ns
VIDEO output ...................second pulse with a width of 20 ns ±4 ns,
...........................Spacing to the first pulse 60 ns (+23ns, -13ns) .
Ext. triggering À Setting at the SME
In menu MODULATION/PULSE
- TRIGGER MODE EXT
À Settings at the pulse generator
- TTL pulse sequence at 10 MHz
The pulse sequence at the oscilloscope must not change.
À Trigger the oscilloscope on the PULSE input.
The pulse sequence may be offset by maximally 50 ns.
À Repeat the measurements with pulse periods of up to 85s and
pulse widths, pulse delays and double pulse spacings of up to 1s.
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