4. Use the arrow keys and scroll
wheel or number pad to enter
the Stop/Start frequency.
To sweep from low to high frequencies, set the
start frequency less than the stop frequency.
To sweep from high to low frequencies, set the
start frequency greater than the stop frequency.
When Marker is off, the sync signal is a square
wave with a 50% duty cycle. When the sweep
starts, the sync signal will be at a TTL low and will
transition to a TTL high level at the center
frequency. The SYNC signal frequency is equal to
the specified sweep time.
When marker is on, the SYNC signal is at a TTL
high level at the start of the sweep and drops to a
TTL low level at the marker frequency.
The SYNC signal is output from the TRIG output
terminal.
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