Agilent Technologies 33220A User Manual page 70

• For FSK, the Sync signal is referenced to the "hop" frequency. The
Sync signal is a TTL "high" on the transition to the "hop" frequency.
• For frequency sweeps with Marker Off, the Sync signal is a square
waveform with a 50% duty cycle for the duration of the sweep. The
Sync signal is a TTL "high" at the beginning of the sweep and goes
"low" at the midpoint of the sweep. The Sync signal is synchronized
with the sweep, but is not literally equal to the sweep time because its
timing includes the re-arm time.
• For frequency sweeps with Marker On, the Sync signal is a TTL "high"
at the beginning of the sweep and goes "low" at the marker frequency.
• For a triggered burst, the Sync signal is a TTL "high" when the burst
begins. The Sync signal is a TTL "low" at the end of the specified
number of cycles (may not be the zero-crossing point if the waveform
has an associated start phase). For an infinite count burst, the Sync
signal is the same as for a continuous waveform.
• For an externally-gated burst, the Sync signal follows the external
gate signal. However, note that the signal will not go to a TTL "low"
until the end of the last cycle (may not be the zero-crossing point if
the waveform has an associated start phase).
• Front-Panel Operation: Press
to toggle between "off" and "on".
• Remote Interface Operation:
OUTPut:SYNC {OFF|ON}
Chapter 3 Features and Functions
Output Configuration
and select the Sync softkey again
Setting is stored in non-volatile memory
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