3152B User Manual
Publication No. 980935 Rev. A
3-4
Operation
EADS North America Test and Services
position along the waveform can be
programmed using the OUTP:SYNC:POS
command. OUTP:SYNC:POS is used to
set both the TRIGger point and the SYNC
point. The BIT signal is recommended for
use in continuous mode
.
outp:sync:sour lcom
Generates a sync signal in SEQuence
mode only once when the selected
segment appears for the first time in the
sequence. The identity of the segment can
be programmed using the TRAC:SEL
command. The sync position along the
selected waveform can be programmed
using the OUTP:SYNC:POS command.
The LCOM signal is recommended for use
in Sequenced mode.
outp:sync:sour ssyn
Generates a sync signal at intervals that
are synchronized with the internal clock
generator. This option is useful to
minimize jitter when using an oscilloscope.
The SSYNc signal is recommended for
use in Triggered mode.
outp:sync:sour hcl
Generates a trigger signal at intervals
equal to half of the period of the sample
clock. This option is useful for
synchronizing two-point waveforms on an
oscilloscope (sine and square waveforms
above 10 MHz).
outp:sync:sour puls
Generates a pulse each time a segment
waveform is generated. The pulse width is
specified in points using the
OUTP:SYNC:WIDTh command. This
command is a useful alternative to the BIT
sync source, especially when the bit pulse
is too narrow. It is also helpful when using
the 3152B to emulate the sync pulse of
another instrument that it is replacing in a
test system.
outp:sync:sour zero
Generates a SYNC signal which remains
low when the main output level is below 0
V and shifts to high when the output signal
becomes greater than 0 V.
Changing the
SYNC Position
and Width
The “SYNC” signal must be wide enough for other devices to
detect, but not so wide that it adversely affects timing in faster
applications. To accommodate a wide variety of situations, the
SYNC pulse width is programmable.
The programmed start point for the SYNC signal is in effect for all of
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