Racal Instruments 3152, User Manual

Page: 37 / 123

Using The Instrument 3-12
Enabling the SYNC
Output
For safety reasons, the SYNC output default setting is OFF. Disable
or enable the SYNC output using the following command:
OUTPut:SYNC {OFF | ON}
When the SYNC output state is programmed to ON, the SYNC
output connector generates signals which are triggered by signals
selected using the SYNC:SOUR command. In the OFF position, the
SYNC connector has no output. It is connected electrically to the
internal circuitry at all times. Ensure that voltage is not applied to
the SYNC at any time. The default SYNC position is the 6th point
from the end of the waveform. The position of the SYNC signal can
be programmed using the OUTPUT:SYNC:POS:POIN command.
The query:
OUTPut:SYNC?
queries the state of the SYNC OUTPUT and returns "0" (OFF) or "1"
(ON).
Assigning the Source For The
SYNC Output
The SYNC output, when enabled, can be triggered by signals
coming from a number of sources. Use the following command to
select the source for validating the SYNC output:
OUTPut:SYNC:SOURce {BIT | LCOMplete | SSYNc |
HCLock}
BIT Generates a sync signal every time the
segment is output in User mode as well as
in Sequenced mode. The sync position
along the waveform can be programmed
using the OUTPUT:SYNC:POS:POIN
command. POIN is used to set both the
TRIGger point and the SYNC point. The
BIT signal is recommended for use in
countinuous mode.
LCOMplete 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 OUTPUT:SYNC:POS:POIN
command. The LCOM signal is
recommended for use in Sequence mode.
SSYNc 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.